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• Puppet gives SSL error because master is not running?

  - by Daniel Huger

  I started with two clean machines this time. My master is running 12.04 Version: 2.7.11-1ubuntu2 Depends: ruby1.8, puppetmaster-common (= 2.7.11-1ubuntu2) My client is 10.04 Version: 2.6.3-0ubuntu1~lucid1 Depends: puppet-common (= 2.6.3-0ubuntu1~lucid1), ruby1.8 To setup Puppet tutorial: http://shapeshed.com/setting-up-puppet-on-ubuntu-10-04/ To connect master and client: http://shapeshed.com/connecting-clients-to-a-puppet-master/ The first time I tried to connect master to client failed with SSL_connect error. So I did rm -rf /etc/puppet/ssl/ to remove all the keys inside ssl folders. It looked like it work.... BUT client# puppet agent --server puppet --waitforce 60 --test /usr/lib/ruby/1.8/facter/util/resolution.rb:46: warning: Insecure world writable dir /etc/condor in PATH, mode 040777 /usr/lib/ruby/1.8/puppet/defaults.rb:67: warning: Insecure world writable dir /etc/condor in PATH, mode 040777 info: Creating a new SSL key for giab10 warning: peer certificate won't be verified in this SSL session info: Caching certificate for ca warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session info: Creating a new SSL certificate request for mybox123 info: Certificate Request fingerprint (md5): XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session info: Caching certificate for mybox123 err: Could not retrieve catalog from remote server: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed warning: Not using cache on failed catalog It cached but then it couldn't retrieve it. Let me stop here.... worrying I would mess something up. But let's check master's status. * master is not running WoW.... ??? master# service puppetmaster start * Starting puppet master [OK] master# service puppetmaster status * master is not running I think time is sync. Well, we are behind a firewall so the port to sync time is disbaled. I checked with date and they seem okay. What about master not running? Is that the cause? Any help is appreciated. Thanks! /var/lib/puppet/log/masterhttp.log [2012-06-30 00:13:25] INFO WEBrick 1.3.1 [2012-06-30 00:13:25] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:13:25] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 00:19:40] INFO WEBrick 1.3.1 [2012-06-30 00:19:40] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:19:40] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 00:28:58] INFO WEBrick 1.3.1 [2012-06-30 00:28:58] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:28:58] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 15:31:25] INFO WEBrick 1.3.1 [2012-06-30 15:31:25] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 15:31:25] WARN TCPServer Error: Address already in use - bind(2) 1 S puppet 5186 1 0 80 0 - 29410 poll_s 15:44 ? 00:00:00 /usr/bin/ruby1.8 /usr/bin/puppet master --masterport=8140 4 S root 5235 5005 0 80 0 - 2344 pipe_w 15:45 pts/0 00:00:00 grep --color=auto puppet kill -9 5186 puppet master service puppetmaster status * master is not running I always have this error, but I always ignored it. http://pastebin.com/exbpArjv What could it mean? Time sync? Package not installed? Then how could we do puppetca in the first place?

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• dns server bind is not work

  - by milad

  I just installed bind on RHEL 6 and point a domain to that server. but actually when i ping domain it returns error 1214: Here is my named.conf: // // named.conf // // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS // server as a caching only nameserver (as a localhost DNS resolver only). // // See /usr/share/doc/bind*/sample/ for example named configuration files. // options { listen-on port 53 { any; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query { any; }; recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; zone "mydomain.com"{ type master; file "/var/named/data/named.mydomain.com"; allow-update { none; }; };` AND The content of "/var/named/data/named.mydomain.com": $TTL 38400 mydomain.com. IN SOA ns1.mydomain.com. milad.yahoo.com. ( 2012101201 ; serial number YYMMDDNN 28800 ; Refresh 7200 ; Retry 864000 ; Expire 38400 ; Min TTL ) mydomain.com. IN A 1.2.3.4 www IN A 1.2.3.4 ns1.mydomain.com. IN A 1.2.3.4 ns2.mydomain.com. IN A 1.2.3.4 mydomain.com. IN NS ns1.mydomain.com. mydomain.com. IN NS ns2.mydomain.com. AND i'm sure the named service is running: [root@server ~]# service named status version: 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.3 CPUs found: 8 worker threads: 8 number of zones: 20 debug level: 0 xfers running: 0 xfers deferred: 0 soa queries in progress: 0 query logging is OFF recursive clients: 0/0/1000 tcp clients: 0/100 server is up and running named (pid 26299) is running... Thanks for your answers. i know that the ping is not the job of bind, i use it just to check whether domain is pointed to host or not.(ping is open in my server as i got reply in pinging ip) i use network-tools.com to ping domain. here the output of dig utility: dig mydomain.com ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.3 <<>> mydomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 6806 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;mydomain.com. IN A ;; Query time: 321 msec ;; SERVER: 5.6.7.8#53(5.6.7.8)##note that 5.6.7.8 is my idc dns ip ;; WHEN: Sun Oct 14 23:53:47 2012

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• iPhone doesn't save password for Cisco IPsec VPN using racoon daemon

  - by dsx

  On my Debian server I had set up racoon daemon (1:0.8.0-14) for Cisco IPSec VPN using certificates for authentication. My racoon.conf is like following: log info; path certificate "/etc/racoon/certs"; listen { isakmp $SERVER_IP_HERE [500]; isakmp_natt $SERVER_IP_HERE [4500]; } timer { natt_keepalive 10 sec; } remote anonymous { lifetime time 24 hours; proposal_check obey; passive on; exchange_mode aggressive,main; my_identifier asn1dn; peers_identifier asn1dn; verify_identifier on; certificate_type x509 "cert_name.crt" "key_name.key"; ca_type x509 "ca.crt"; mode_cfg on; verify_cert on; ike_frag on; generate_policy on; nat_traversal on; dpd_delay 20; proposal { encryption_algorithm aes; hash_algorithm sha1; authentication_method xauth_rsa_server; dh_group modp1024; } } mode_cfg { conf_source local; auth_source system; auth_throttle 3; save_passwd on; dns4 8.8.8.8; network4 $SOME_LAN_SUBNET; netmask4 255.255.255.0; pool_size 128; } sainfo anonymous { pfs_group 2; lifetime time 24 hour; encryption_algorithm aes; authentication_algorithm hmac_sha1; compression_algorithm deflate; } I'm not using PSK authentication here. Using iPhone configuration utility I had uploaded all required certificates to iPhone and set up VPN on demand. Everything works just fine except one thing: iPhone refuses to save VPN password regardless of save_passwd on; in racoon configuration file. As opposed to iPhone behaviour, Mac OS X 10.8.2 have no problems saving password. I had examined iPhone log file and found following: racoon[151] <Notice>: >>>>> phase change status = phase 1 established configd[50] <Notice>: IPSec Network Configuration started. configd[50] <Notice>: IPSec Network Configuration: INTERNAL-IP4-ADDRESS = $SUBNET_IP_HERE. configd[50] <Notice>: IPSec Network Configuration: INTERNAL-IP4-MASK = 255.255.255.0. configd[50] <Notice>: IPSec Network Configuration: SAVE-PASSWORD = 0. configd[50] <Notice>: IPSec Network Configuration: INTERNAL-IP4-DNS = 8.8.8.8. configd[50] <Notice>: IPSec Network Configuration: BANNER = . configd[50] <Notice>: IPSec Network Configuration: DEF-DOMAIN = . configd[50] <Notice>: IPSec Network Configuration: DEFAULT-ROUTE = local-address $SUBNET_IP_HERE/32. configd[50] <Notice>: IPSec Phase2 starting. configd[50] <Notice>: IPSec Network Configuration established. configd[50] <Notice>: IPSec Phase1 established. Please note IPSec Network Configuration message containing SAVE-PASSWORD = 0.. Is it a bug in racoon daemon on server, or iPhone (iOS version is 6.0.1 (10A523)) or it is me missing something? How to make iPhone remember IPSec VPN password?

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• Probation is Over: PASS Board Year 1, Q2

  - by Denise McInerney

  Though it's not always official every job begins with a probation period. You start out with lots of questions and every day you find out how much more you have to learn. Usually after a few months you discover that you can actually answer some questions and have at least an idea of what you are supposed to be doing. Now at the end of my second quarter on the "job" of serving on the PASS Board I have reached that point. My probation period is over. The last three months were busy for the entire Board with the budget process, an in-person meeting and moving forward with PASS Global Growth plans. I had also set a specific goal for myself for my 2nd quarter: to see the Board to adopt a Code of Conduct for the PASS Summit. Code of Conduct When I ran for the Board I included my desire to see PASS establish a code of conduct in my campaign platform.  I was motivated to do this for a few reasons. Other technical conferences have had incidents of harassment. Most of these did not have a policy in place prior to having a problem, though several conference organizers have since adopted anti-harassment policies or codes of conduct. I felt it would be in PASS' interest to establish a policy so we would be prepared should there be an incident.   "This is Community" Adopting a code of conduct would reinforce our community orientation and send a message about the positive character of the Summit. PASS is a leader among technical organizations for its promotion and support of women. Adopting a code of conduct would further demonstrate our leadership in this area. After researching similar polices from other organizations I published a first draft in April. I solicited feedback from the Board, HQ staff and some PASS members. Incorporating that feedback I presented version 4 at the May Board meeting, where we had a good discussion. You can read the meeting minutes for details. I incorporated points from  the Board discussion as well as feedback from a legal review to produce a final version which has been submitted to the Board. It will be discussed at the Board meeting July 12. You can read the full text at the end of this post. Virtual Chapters In the first quarter we started ramping up marketing support for the Virtual Chapters. Since then each edition of the Connector has highlighted a different VC to help get out the message about the variety of eductional opporutnities that are offered. These VC profiles will continue in the coming months. I was very pleased to welcome the new DBA Fundamentals VC which is geared toward new DBAs, people who are considering entering the field and those transitioning from a different IT role. Thanks to the contributions of Erin Stellato, Michelle Nalliah and Karla Landrum we published a "Virtual Chapter Guidebook". This document includes great advice on how to build and promote a VC. It's also a reference for how things work, from budgets to webinar hosting. I think this document will be extremely valuable to all our VC leaders and am grateful to those who put it together. Board Meeting/SQL Rally The Board met in May in Dallas. Among the items discussed were Global Growth, the budget, future events and the upcoming elections. We covered a lot of ground in two days and I will again refer you to the meeting minutes for details. The meeting schedule allowed us to participate in the SQL Rally networking events and one full day of the conference. I enjoyed having the opportunity to meet and talk with many PASS members. And my hat is off to the SQL Rally organizers who put on an outstanding event. Global Growth PASS has undertaken a major intitiative to reach and engage SQL Server professionals around the world. This Global Growth plan is ambitious and will have a significant impact on the strategic direction of the organization. We have been reaching out to the community for feedback, including hosting Twitter chats and live Town Hall meetings. I co-hosted two of these events and appreciated hearing the different perspectives of the people who participated If you have not done so I encourage you to read about the Global Growth vision and proposed governance changes  and submit your feedback. FY13 Budget July 1 is the beginning of PASS' fiscal year, which makes the end of June the deadline for approving a budget. Each director submits a budget for his or her portfolio. For the Virtual Chapter portfolio I focused on how we can allocate resources to grow the VCs. Budgeting is a give-and-take process, and while I didn't get everything I asked for I'm pleased the FY13 budget includes a significant increase in financial support for the Virtual Chapters. Many people put a lot of work into the budget, but no two people deserve credit more than VP of Finance Douglas McDowell and Accounting Manager Sandy Cherry. Thanks to both of them for getting us across the goal line on time. SQL Saturday I attended SQL Saturdays in Orange Co. CA and Phoenix. It's always inspiring to see the enthusiasm in the community for learning and networking. These events are successful due to the hard work of many volunteers. Thanks to the organizers in both cities for all your efforts. Next Up This quarter we'll be gearing up plans for the VCs at the Summit and exploring ways the VCs can best support PASS' Global Growth work. I'll also be wrapping up work on the Code of Conduct and attending a Board meeting in September. And I will be at SQL Saturday #144 in Sacramento later this month. Here is the language of the Code of Conduct I have submitted to the Board for consideration: PASS Code of Conduct The PASS Summit provides database professionals from a variety of backgrounds with an opportunity to connect, share and learn.  We value the strong sense of community that characterizes this event and we seek to foster an inclusive, professional atmosphere. We are dedicated to providing a harassment-free conference experience for everyone, regardless of gender, race, sexual orientation, disability, physical appearance, religion or any other protected classification.  Everyone at the Summit is expected to follow the Code of Conduct. This includes but is not limited to: PASS Staff, Exhibitors, Speakers, Attendees and anyone affiliated with the event. Participants are expected to follow the Code of Conduct at all Summit events, including PASS-sponsored social events. Participant behavior Harassment includes, but is not limited to, offensive verbal comments related to gender, race, sexual orientation, disability, physical appearance, religion, or any other protected classification.  Intimidation, threats, stalking, harassing photography or recording, sustained disruption of talks or other events, inappropriate physical contact and unwelcome attention will also be considered harassment. Similarly, sexual, racist, derogatory, threatening or other inappropriate language and imagery are not appropriate for any conference venue, including sessions.  Recourse If a participant engages in any conduct that is prohibited under this Code of Conduct, the conference organizers may take any action they deem appropriate, including warning the offender or expelling the offender from the conference. No refunds will be granted to attendees expelled from the Summit due to violations of the Code of Conduct. If you are being harassed, witness harassment, or have any other concerns, please contact a member of conference staff immediately. Conference staff can be identified by their “Headquarters/Staff” shirts and are trained to handle the situation appropriately. A Code of Conduct Committee (CCC) made up of the Executive Manager and three members of the Board of Directors designated by the President will be authorized to take action in response to an incident or behavior that violates the Code of Conduct.

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• OpenVPN on Tomato and Vista - can't see my network

  - by Ian

  I followed the instructions here (http://todayguesswhat.blogspot.ca/2011/03/quick-simple-vpn-setup-guide-using.html) to set up a TCP connection to OpenVPN on my Tomato router. Used TCP because the place I usually surf at seems to have the other ports blocked. My Vista laptop is able to connect to the router but I don't appear to be getting an IP address. I'm able to access my router's admin page, but I can't see the network at home. When I browse to Whatsmyip I see my home IP. Here are the results of route print -4 when I'm just connect to the library and when I've fired up the VP connection as well: Library only: =========================================================================== Interface List 22 ...00 ff c4 a0 e7 5c ...... TAP-Win32 Adapter V9 15 ...00 23 4e 20 b3 64 ...... Atheros AR9281 Wireless Network Adapter 10 ...00 23 8b 39 ec 71 ...... Marvell Yukon 88E8040T PCI-E Fast Ethernet Controller 1 ........................... Software Loopback Interface 1 11 ...00 00 00 00 00 00 00 e0 isatap.{834A8A0A-5E2C-47D0-9673-7965DE8B5470} 14 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface 17 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3 20 ...00 00 00 00 00 00 00 e0 6TO4 Adapter 18 ...00 00 00 00 00 00 00 e0 6TO4 Adapter 19 ...00 00 00 00 00 00 00 e0 6TO4 Adapter 23 ...00 00 00 00 00 00 00 e0 isatap.{C4A0E75C-765E-4F7D-A55C-77945779816A} 34 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #5 =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.1.29.1 10.1.29.117 25 10.1.29.0 255.255.255.0 On-link 10.1.29.117 281 10.1.29.117 255.255.255.255 On-link 10.1.29.117 281 10.1.29.255 255.255.255.255 On-link 10.1.29.117 281 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.1.29.117 281 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.1.29.117 281 =========================================================================== Library and TCP OpenVPN: IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.1.29.1 10.1.29.117 25 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.116 30 0.0.0.0 128.0.0.0 192.168.1.1 192.168.1.116 30 10.1.29.0 255.255.255.0 On-link 10.1.29.117 281 10.1.29.117 255.255.255.255 On-link 10.1.29.117 281 10.1.29.255 255.255.255.255 On-link 10.1.29.117 281 24.212.205.68 255.255.255.255 10.1.29.1 10.1.29.117 25 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 128.0.0.0 128.0.0.0 192.168.1.1 192.168.1.116 30 192.168.1.0 255.255.255.0 On-link 192.168.1.116 286 192.168.1.116 255.255.255.255 On-link 192.168.1.116 286 192.168.1.255 255.255.255.255 On-link 192.168.1.116 286 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.116 286 224.0.0.0 240.0.0.0 On-link 10.1.29.117 281 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.116 286 255.255.255.255 255.255.255.255 On-link 10.1.29.117 281 =========================================================================== Thanks for any advice. I looked at one of the answers but I'm not sure if it applied to me as it said that 10...* was the vpn connection, but I appear to have 10...* when I connect just to the library.

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• Fun with Aggregates

  - by Paul White

  There are interesting things to be learned from even the simplest queries.  For example, imagine you are given the task of writing a query to list AdventureWorks product names where the product has at least one entry in the transaction history table, but fewer than ten. One possible query to meet that specification is: SELECT p.Name FROM Production.Product AS p JOIN Production.TransactionHistory AS th ON p.ProductID = th.ProductID GROUP BY p.ProductID, p.Name HAVING COUNT_BIG(*) < 10; That query correctly returns 23 rows (execution plan and data sample shown below): The execution plan looks a bit different from the written form of the query: the base tables are accessed in reverse order, and the aggregation is performed before the join.  The general idea is to read all rows from the history table, compute the count of rows grouped by ProductID, merge join the results to the Product table on ProductID, and finally filter to only return rows where the count is less than ten. This ‘fully-optimized’ plan has an estimated cost of around 0.33 units.  The reason for the quote marks there is that this plan is not quite as optimal as it could be – surely it would make sense to push the Filter down past the join too?  To answer that, let’s look at some other ways to formulate this query.  This being SQL, there are any number of ways to write logically-equivalent query specifications, so we’ll just look at a couple of interesting ones.  The first query is an attempt to reverse-engineer T-SQL from the optimized query plan shown above.  It joins the result of pre-aggregating the history table to the Product table before filtering: SELECT p.Name FROM ( SELECT th.ProductID, cnt = COUNT_BIG(*) FROM Production.TransactionHistory AS th GROUP BY th.ProductID ) AS q1 JOIN Production.Product AS p ON p.ProductID = q1.ProductID WHERE q1.cnt < 10; Perhaps a little surprisingly, we get a slightly different execution plan: The results are the same (23 rows) but this time the Filter is pushed below the join!  The optimizer chooses nested loops for the join, because the cardinality estimate for rows passing the Filter is a bit low (estimate 1 versus 23 actual), though you can force a merge join with a hint and the Filter still appears below the join.  In yet another variation, the < 10 predicate can be ‘manually pushed’ by specifying it in a HAVING clause in the “q1” sub-query instead of in the WHERE clause as written above. The reason this predicate can be pushed past the join in this query form, but not in the original formulation is simply an optimizer limitation – it does make efforts (primarily during the simplification phase) to encourage logically-equivalent query specifications to produce the same execution plan, but the implementation is not completely comprehensive. Moving on to a second example, the following query specification results from phrasing the requirement as “list the products where there exists fewer than ten correlated rows in the history table”: SELECT p.Name FROM Production.Product AS p WHERE EXISTS ( SELECT * FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID HAVING COUNT_BIG(*) < 10 ); Unfortunately, this query produces an incorrect result (86 rows): The problem is that it lists products with no history rows, though the reasons are interesting.  The COUNT_BIG(*) in the EXISTS clause is a scalar aggregate (meaning there is no GROUP BY clause) and scalar aggregates always produce a value, even when the input is an empty set.  In the case of the COUNT aggregate, the result of aggregating the empty set is zero (the other standard aggregates produce a NULL).  To make the point really clear, let’s look at product 709, which happens to be one for which no history rows exist: -- Scalar aggregate SELECT COUNT_BIG(*) FROM Production.TransactionHistory AS th WHERE th.ProductID = 709;   -- Vector aggregate SELECT COUNT_BIG(*) FROM Production.TransactionHistory AS th WHERE th.ProductID = 709 GROUP BY th.ProductID; The estimated execution plans for these two statements are almost identical: You might expect the Stream Aggregate to have a Group By for the second statement, but this is not the case.  The query includes an equality comparison to a constant value (709), so all qualified rows are guaranteed to have the same value for ProductID and the Group By is optimized away. In fact there are some minor differences between the two plans (the first is auto-parameterized and qualifies for trivial plan, whereas the second is not auto-parameterized and requires cost-based optimization), but there is nothing to indicate that one is a scalar aggregate and the other is a vector aggregate.  This is something I would like to see exposed in show plan so I suggested it on Connect.  Anyway, the results of running the two queries show the difference at runtime: The scalar aggregate (no GROUP BY) returns a result of zero, whereas the vector aggregate (with a GROUP BY clause) returns nothing at all.  Returning to our EXISTS query, we could ‘fix’ it by changing the HAVING clause to reject rows where the scalar aggregate returns zero: SELECT p.Name FROM Production.Product AS p WHERE EXISTS ( SELECT * FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID HAVING COUNT_BIG(*) BETWEEN 1 AND 9 ); The query now returns the correct 23 rows: Unfortunately, the execution plan is less efficient now – it has an estimated cost of 0.78 compared to 0.33 for the earlier plans.  Let’s try adding a redundant GROUP BY instead of changing the HAVING clause: SELECT p.Name FROM Production.Product AS p WHERE EXISTS ( SELECT * FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID GROUP BY th.ProductID HAVING COUNT_BIG(*) < 10 ); Not only do we now get correct results (23 rows), this is the execution plan: I like to compare that plan to quantum physics: if you don’t find it shocking, you haven’t understood it properly :)  The simple addition of a redundant GROUP BY has resulted in the EXISTS form of the query being transformed into exactly the same optimal plan we found earlier.  What’s more, in SQL Server 2008 and later, we can replace the odd-looking GROUP BY with an explicit GROUP BY on the empty set: SELECT p.Name FROM Production.Product AS p WHERE EXISTS ( SELECT * FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID GROUP BY () HAVING COUNT_BIG(*) < 10 ); I offer that as an alternative because some people find it more intuitive (and it perhaps has more geek value too).  Whichever way you prefer, it’s rather satisfying to note that the result of the sub-query does not exist for a particular correlated value where a vector aggregate is used (the scalar COUNT aggregate always returns a value, even if zero, so it always ‘EXISTS’ regardless which ProductID is logically being evaluated). The following query forms also produce the optimal plan and correct results, so long as a vector aggregate is used (you can probably find more equivalent query forms): WHERE Clause SELECT p.Name FROM Production.Product AS p WHERE ( SELECT COUNT_BIG(*) FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID GROUP BY () ) < 10; APPLY SELECT p.Name FROM Production.Product AS p CROSS APPLY ( SELECT NULL FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID GROUP BY () HAVING COUNT_BIG(*) < 10 ) AS ca (dummy); FROM Clause SELECT q1.Name FROM ( SELECT p.Name, cnt = ( SELECT COUNT_BIG(*) FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID GROUP BY () ) FROM Production.Product AS p ) AS q1 WHERE q1.cnt < 10; This last example uses SUM(1) instead of COUNT and does not require a vector aggregate…you should be able to work out why :) SELECT q.Name FROM ( SELECT p.Name, cnt = ( SELECT SUM(1) FROM Production.TransactionHistory AS th WHERE th.ProductID = p.ProductID ) FROM Production.Product AS p ) AS q WHERE q.cnt < 10; The semantics of SQL aggregates are rather odd in places.  It definitely pays to get to know the rules, and to be careful to check whether your queries are using scalar or vector aggregates.  As we have seen, query plans do not show in which ‘mode’ an aggregate is running and getting it wrong can cause poor performance, wrong results, or both. © 2012 Paul White Twitter: @SQL_Kiwi email: [email protected]

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• Oracle Virtual Server OEL vm fails to start - kernel panic on cpu identify

  - by Towndrunk

  I am in the process of following a guide to setup various oracle vm templates, so far I have installed OVS 2. 2 and got the OVM Manager working, imported the template for OEL5U5 and created a vm from it.. the problem comes when starting that vm. The log in the OVMM console shows the following; Update VM Status - Running Configure CPU Cap Set CPU Cap: failed:<Exception: failed:<Exception: ['xm', 'sched-credit', '-d', '32_EM11g_OVM', '-c', '0'] => Error: Domain '32_EM11g_OVM' does not exist. StackTrace: File "/opt/ovs-agent-2.3/OVSXXenVMConfig.py", line 2531, in xen_set_cpu_cap run_cmd(args=['xm', File "/opt/ovs-agent-2.3/OVSCommons.py", line 92, in run_cmd raise Exception('%s => %s' % (args, err)) The xend.log shows; [2012-11-12 16:42:01 7581] DEBUG (DevController:139) Waiting for devices vtpm [2012-11-12 16:42:01 7581] INFO (XendDomain:1180) Domain 32_EM11g_OVM (3) unpaused. [2012-11-12 16:42:03 7581] WARNING (XendDomainInfo:1907) Domain has crashed: name=32_EM11g_OVM id=3. [2012-11-12 16:42:03 7581] ERROR (XendDomainInfo:2041) VM 32_EM11g_OVM restarting too fast (Elapsed time: 11.377262 seconds). Refusing to restart to avoid loops .> [2012-11-12 16:42:03 7581] DEBUG (XendDomainInfo:2757) XendDomainInfo.destroy: domid=3 [2012-11-12 16:42:12 7581] DEBUG (XendDomainInfo:2230) Destroying device model [2012-11-12 16:42:12 7581] INFO (image:553) 32_EM11g_OVM device model terminated I have set_on_crash="preserve" in the vm.cfg and have then run xm create -c to get the console screen while booting and this is the log of what happens.. Started domain 32_EM11g_OVM (id=4) Bootdata ok (command line is ro root=LABEL=/ ) Linux version 2.6.18-194.0.0.0.3.el5xen ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Mon Mar 29 18:27:00 EDT 2010 BIOS-provided physical RAM map: Xen: 0000000000000000 - 0000000180800000 (usable)> No mptable found. Built 1 zonelists. Total pages: 1574912 Kernel command line: ro root=LABEL=/ Initializing CPU#0 PID hash table entries: 4096 (order: 12, 32768 bytes) Xen reported: 1600.008 MHz processor. Console: colour dummy device 80x25 Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) Software IO TLB disabled Memory: 6155256k/6299648k available (2514k kernel code, 135548k reserved, 1394k data, 184k init) Calibrating delay using timer specific routine.. 4006.42 BogoMIPS (lpj=8012858) Security Framework v1.0.0 initialized SELinux: Initializing. selinux_register_security: Registering secondary module capability Capability LSM initialized as secondary Mount-cache hash table entries: 256 CPU: L1 I Cache: 64K (64 bytes/line), D cache 16K (64 bytes/line) CPU: L2 Cache: 2048K (64 bytes/line) general protection fault: 0000 [1] SMP last sysfs file: CPU 0 Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.18-194.0.0.0.3.el5xen #1 RIP: e030:[ffffffff80271280] [ffffffff80271280] identify_cpu+0x210/0x494 RSP: e02b:ffffffff80643f70 EFLAGS: 00010212 RAX: 0040401000810008 RBX: 0000000000000000 RCX: 00000000c001001f RDX: 0000000000404010 RSI: 0000000000000001 RDI: 0000000000000005 RBP: ffffffff8063e980 R08: 0000000000000025 R09: ffff8800019d1000 R10: 0000000000000026 R11: ffff88000102c400 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffffffff805d2000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 Process swapper (pid: 0, threadinfo ffffffff80642000, task ffffffff804f4b80) Stack: 0000000000000000 ffffffff802d09bb ffffffff804f4b80 0000000000000000 0000000021100800 0000000000000000 0000000000000000 ffffffff8064cb00 0000000000000000 0000000000000000 Call Trace: [ffffffff802d09bb] kmem_cache_zalloc+0x62/0x80 [ffffffff8064cb00] start_kernel+0x210/0x224 [ffffffff8064c1e5] _sinittext+0x1e5/0x1eb Code: 0f 30 b8 73 00 00 00 f0 0f ab 45 08 e9 f0 00 00 00 48 89 ef RIP [ffffffff80271280] identify_cpu+0x210/0x494 RSP ffffffff80643f70 0 Kernel panic - not syncing: Fatal exception clear as mud to me. are there any other logs that will help me? I have now deployed another vm from the same template and used the default vm settings rather than adding more memory etc - I get exactly the same error.

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• RHCS: GFS2 in A/A cluster with common storage. Configuring GFS with rgmanager

  - by Pavel A

  I'm configuring a two node A/A cluster with a common storage attached via iSCSI, which uses GFS2 on top of clustered LVM. So far I have prepared a simple configuration, but am not sure which is the right way to configure gfs resource. Here is the rm section of /etc/cluster/cluster.conf: <rm> <failoverdomains> <failoverdomain name="node1" nofailback="0" ordered="0" restricted="1"> <failoverdomainnode name="rhc-n1"/> </failoverdomain> <failoverdomain name="node2" nofailback="0" ordered="0" restricted="1"> <failoverdomainnode name="rhc-n2"/> </failoverdomain> </failoverdomains> <resources> <script file="/etc/init.d/clvm" name="clvmd"/> <clusterfs name="gfs" fstype="gfs2" mountpoint="/mnt/gfs" device="/dev/vg-cs/lv-gfs"/> </resources> <service name="shared-storage-inst1" autostart="0" domain="node1" exclusive="0" recovery="restart"> <script ref="clvmd"> <clusterfs ref="gfs"/> </script> </service> <service name="shared-storage-inst2" autostart="0" domain="node2" exclusive="0" recovery="restart"> <script ref="clvmd"> <clusterfs ref="gfs"/> </script> </service> </rm> This is what I mean: when using clusterfs resource agent to handle GFS partition, it is not unmounted by default (unless force_unmount option is given). This way when I issue clusvcadm -s shared-storage-inst1 clvm is stopped, but GFS is not unmounted, so a node cannot alter LVM structure on shared storage anymore, but can still access data. And even though a node can do it quite safely (dlm is still running), this seems to be rather inappropriate to me, since clustat reports that the service on a particular node is stopped. Moreover if I later try to stop cman on that node, it will find a dlm locking, produced by GFS, and fail to stop. I could have simply added force_unmount="1", but I would like to know what is the reason behind the default behavior. Why is it not unmounted? Most of the examples out there silently use force_unmount="0", some don't, but none of them give any clue on how the decision was made. Apart from that I have found sample configurations, where people manage GFS partitions with gfs2 init script - https://alteeve.ca/w/2-Node_Red_Hat_KVM_Cluster_Tutorial#Defining_The_Resources or even as simply as just enabling services such as clvm and gfs2 to start automatically at boot (http://pbraun.nethence.com/doc/filesystems/gfs2.html), like: chkconfig gfs2 on If I understand the latest approach correctly, such cluster only controls whether nodes are still alive and can fence errant ones, but such cluster has no control over the status of its resources. I have some experience with Pacemaker and I'm used to that all resources are controlled by a cluster and an action can be taken when not only there are connectivity issues, but any of the resources misbehave. So, which is the right way for me to go: leave GFS partition mounted (any reasons to do so?) set force_unmount="1". Won't this break anything? Why this is not the default? use script resource <script file="/etc/init.d/gfs2" name="gfs"/> to manage GFS partition. start it at boot and don't include in cluster.conf (any reasons to do so?) This may be a sort of question that cannot be answered unambiguously, so it would be also of much value for me if you shared your experience or expressed your thoughts on the issue. How does for example /etc/cluster/cluster.conf look like when configuring gfs with Conga or ccs (they are not available to me since for now I have to use Ubuntu for the cluster)? Thanks you very much!

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• Agilist, Heal Thyself!

  - by Dylan Smith

  I’ve been meaning to blog about a great experience I had earlier in the year at Prairie Dev Con Calgary.  Myself and Steve Rogalsky did a session that we called “Agilist, Heal Thyself!”.  We used a format that was new to me, but that Steve had seen used at another conference.  What we did was start by asking the audience to give us a list of challenges they had had when adopting agile.  We wrote them all down, then had everybody vote on the most interesting ones.  Then we split into two groups, and each group was assigned one of the agile challenges.  We had 20 minutes to discuss the challenge, and suggest solutions or approaches to improve things.  At the end of the 20 minutes, each of the groups gave a brief summary of their discussion and learning's, then we mixed up the groups and repeated with another 2 challenges. The 2 groups I was part of had some really interesting discussions, and suggestions: Unfinished Stories at the end of Sprints The first agile challenge we tackled, was something that every single Scrum team I have worked with has struggled with.  What happens when you get to the end of a Sprint, and there are some stories that are only partially completed.  The team in question was getting very de-moralized as they felt that every Sprint was a failure as they never had a set of fully completed stories. How do you avoid this? and/or what do you do when it happens? There were 2 pieces of advice that were well received: 1. Try to bring stories to completion before starting new ones.  This is advice I give all my Scrum teams.  If you have a 3-week sprint, what happens all too often is you get to the end of week 2, and a lot of stories are almost done; but almost none are completely done.  This is a Bad Thing.  I encourage the teams I work with to only start a new story as a very last resort.  If you finish your task look at the stories in progress and see if there’s anything you can do to help before moving onto a new story.  In the daily standup, put a focus on seeing what stories got completed yesterday, if a few days go by with none getting completed, be sure this fact is visible to the team and do something about it.  Something I’ve been doing recently is introducing WIP (Work In Progress) limits while using Scrum.  My current team has 2-week sprints, and we usually have about a dozen or stories in a sprint.  We instituted a WIP limit of 4 stories.  If 4 stories have been started but not finished then nobody is allowed to start new stories.  This made it obvious very quickly that our QA tasks were our bottleneck (we have 4 devs, but only 1.5 testers).  The WIP limit forced the developers to start to pickup QA tasks before moving onto the next dev tasks, and we ended our sprints with many more stories completely finished than we did before introducing WIP limits. 2. Rather than using time-boxed sprints, why not just do away with them altogether and go to a continuous flow type approach like KanBan.  Limit WIP to keep things under control, but don’t have a fixed time box at the end of which all tasks are supposed to be done.  This eliminates the problem almost entirely.  At some points in the project (releases) you need to be able to burn down all the half finished stories to get a stable release build, but this probably occurs less often than every sprint, and there are alternative approaches to achieve it using branching strategies rather than forcing your team to try to get to Zero WIP every 2-weeks (e.g. when you are ready for a release, create a new branch for any new stories, but finish all existing stories in the current branch and release it). Trying to Introduce Agile into a team with previous Bad Agile Experiences One of the agile adoption challenges somebody described, was he was in a leadership role on a team he had recently joined – lets call him Dave.  This team was currently very waterfall in their ALM process, but they were about to start on a new green-field project.  Dave wanted to use this new project as an opportunity to do things the “right way”, using an Agile methodology like Scrum, adopting TDD, automated builds, proper branching strategies, etc.  The problem he was facing is everybody else on the team had previously gone through an “Agile Adoption” that was a horrible failure.  Dave blamed this failure on the consultant brought in previously to lead this agile transition, but regardless of the reason, the team had very negative feelings towards agile, and was very resistant to trying it out again.  Dave possibly had the authority to try to force the team to adopt Agile practices, but we all know that doesn’t work very well.  What was Dave to do? Ultimately, the best advice was to question *why* did Dave want to adopt all these various practices. Rather than trying to convince his team that these were the “right way” to run a dev project, and trying to do a Big Bang approach to introducing change.  He would be better served by identifying problems the team currently faces, have a discussion with the team to get everybody to agree that specific problems existed, then have an open discussion about ways to address those problems.  This way Dave could incrementally introduce agile practices, and he doesn’t even need to identify them as “agile” practices if he doesn’t want to.  For example, when we discussed with Dave, he said probably the teams biggest problem was long periods without feedback from users, then finding out too late that the software is not going to meet their needs.  Rather than Dave jumping right to introducing Scrum and all it entails, it would be easier to get buy-in from team if he framed it as a discussion of existing problems, and brainstorming possible solutions.  And possibly most importantly, don’t try to do massive changes all at once with a team that has not bought-into those changes.  Taking an incremental approach has a greater chance of success. I see something similar in my day job all the time too.  Clients who for one reason or another claim to not be fans of agile (or not ready for agile yet).  But then they go on to ask me to help them get shorter feedback cycles, quicker delivery cycles, iterative development processes, etc.  It’s kind of funny at times, sometimes you just need to phrase the suggestions in terms they are using and avoid the word “agile”. PS – I haven’t blogged all that much over the past couple of years, but in an attempt to motivate myself, a few of us have accepted a blogger challenge.  There’s 6 of us who have all put some money into a pool, and the agreement is that we each need to blog at least once every 2-weeks.  The first 2-week period that we miss we’re eliminated.  Last person standing gets the money.  So expect at least one blog post every couple of weeks for the near future (I hope!).  And check out the blogs of the other 5 people in this blogger challenge: Steve Rogalsky: http://winnipegagilist.blogspot.ca Aaron Kowall: http://www.geekswithblogs.net/caffeinatedgeek Tyler Doerkson: http://blog.tylerdoerksen.com David Alpert: http://www.spinthemoose.com Dave White: http://www.agileramblings.com (note: site not available yet.  should be shortly or he owes me some money!)

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• Bugzilla : No SASL mechanism found

  - by niteshsinha

  I am using Bugzilla on windows 7. I am using the unofficial Bugzilla installer. I followed the steps accordingly and gave valid credentials wherever required. I open Bugzilla and try to create a new account , but i get the following error. Software error: No SASL mechanism found at C:/Program Files/Bugzilla/perl/perl/site/lib/Authen/SASL.pm line 77 at C:/Program Files/Bugzilla/perl/perl/lib/Net/SMTP.pm line 143 i ran checksetup.pl and found that Authen::SASL and SMTP both are available on my machine. The output of checksetup.pl is as follows. * This is Bugzilla 3.6.3 on perl 5.10.1 * Running on Win7 Build 7600 Checking perl modules... Checking for CGI.pm (v3.33) ok: found v3.49 Checking for Digest-SHA (any) ok: found v5.48 Checking for TimeDate (v2.21) ok: found v2.24 Checking for DateTime (v0.28) ok: found v0.53 Checking for DateTime-TimeZone (v0.79) ok: found v1.10 Checking for DBI (v1.41) ok: found v1.609 Checking for Template-Toolkit (v2.22) ok: found v2.22 Checking for Email-Send (v2.16) ok: found v2.198 Checking for Email-MIME (v1.861) ok: found v1.903 Checking for Email-MIME-Encodings (v1.313) ok: found v1.313 Checking for Email-MIME-Modifier (v1.442) ok: found v1.903 Checking for URI (any) ok: found v1.52 Checking available perl DBD modules... Checking for DBD-Pg (v1.45) ok: found v2.16.1 Checking for DBD-mysql (v4.00) ok: found v4.012 Checking for DBD-Oracle (v1.19) not found The following Perl modules are optional: Checking for GD (v1.20) ok: found v2.44 Checking for Chart (v2.1) ok: found v2.4.1 Checking for Template-GD (any) ok: found v1.56 Checking for GDTextUtil (any) ok: found v0.86 Checking for GDGraph (any) ok: found v1.44 Checking for XML-Twig (any) ok: found v3.34 Checking for MIME-tools (v5.406) ok: found v5.427 Checking for libwww-perl (any) ok: found v5.834 Checking for PatchReader (v0.9.4) ok: found v0.9.5 Checking for perl-ldap (any) ok: found v0.39 Checking for Authen-SASL (any) ok: found v2.15 Checking for RadiusPerl (any) ok: found v0.17 Checking for SOAP-Lite (v0.710.06) ok: found v0.710.10 Checking for JSON-RPC (any) ok: found v0.95 Checking for Test-Taint (any) ok: found v1.04 Checking for HTML-Parser (v3.40) ok: found v3.64 Checking for HTML-Scrubber (any) ok: found v0.08 Checking for Email-MIME-Attachment-Stripper (any) ok: found v1.316 Checking for Email-Reply (any) ok: found v1.202 Checking for TheSchwartz (any) not found Checking for Daemon-Generic (any) not found Checking for mod_perl (v1.999022) not found *********************************************************************** * OPTIONAL MODULES * *********************************************************************** * Certain Perl modules are not required by Bugzilla, but by * * installing the latest version you gain access to additional * * features. * * * * The optional modules you do not have installed are listed below, * * with the name of the feature they enable. Below that table are the * * commands to install each module. * *********************************************************************** * MODULE NAME * ENABLES FEATURE(S) * *********************************************************************** * TheSchwartz * Mail Queueing * * Daemon-Generic * Mail Queueing * * mod_perl * mod_perl * *********************************************************************** * Note For Windows Users * *********************************************************************** * In order to install the modules listed below, you first have to run * * the following command as an Administrator: * * * * ppm repo add theory58S http://cpan.uwinnipeg.ca/PPMPackages/10xx/ * * * Then you have to do (also as an Administrator): * * * * ppm repo up theory58S * * * * Do that last command over and over until you see "theory58S" at the * * top of the displayed list. * *********************************************************************** COMMANDS TO INSTALL OPTIONAL MODULES: TheSchwartz: ppm install TheSchwartz Daemon-Generic: ppm install Daemon-Generic mod_perl: ppm install mod_perl Reading ./localconfig... Checking for DBD-mysql (v4.00) ok: found v4.012 Checking for MySQL (v4.1.2) ok: found v5.1.44-community-log Removing existing compiled templates... Precompiling templates...done. Now that you have installed Bugzilla, you should visit the 'Parameters' page (linked in the footer of the Administrator account) to ensure it is set up as you wish - this includes setting the 'urlbase' option to the correct URL. Press any key to continue . . . Please tell me what should i do. Please note: i am running behind a corporate proxy , SSL/TLS is not used internally but i am giving the smtpUser and smtpPass also.

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• Ubuntu 14.04, OpenLDAP TLS problems

  - by larsemil

  So i have set up an openldap server using this guide here. It worked fine. But as i want to use sssd i also need TLS to be working for ldap. So i looked into and followed the TLS part of the guide. And i never got any errors and slapd started fine again. BUT. It does not seem to work when i try to use ldap over tls. root@server:~# ldapsearch -x -ZZ -H ldap://83.209.243.253 -b dc=daladevelop,dc=se ldap_start_tls: Protocol error (2) additional info: unsupported extended operation Ganking up the debug level some notches returns some more information: root@server:~# ldapsearch -x -ZZ -H ldap://83.209.243.253 -b dc=daladevelop,dc=se -d 5 ldap_url_parse_ext(ldap://83.209.243.253) ldap_create ldap_url_parse_ext(ldap://83.209.243.253:389/??base) ldap_extended_operation_s ldap_extended_operation ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP 83.209.243.253:389 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying 83.209.243.253:389 ldap_pvt_connect: fd: 3 tm: -1 async: 0 ldap_open_defconn: successful ldap_send_server_request ber_scanf fmt ({it) ber: ber_scanf fmt ({) ber: ber_flush2: 31 bytes to sd 3 ldap_result ld 0x7f25df51e220 msgid 1 wait4msg ld 0x7f25df51e220 msgid 1 (infinite timeout) wait4msg continue ld 0x7f25df51e220 msgid 1 all 1 ** ld 0x7f25df51e220 Connections: * host: 83.209.243.253 port: 389 (default) refcnt: 2 status: Connected last used: Fri Jun 6 08:52:16 2014 ** ld 0x7f25df51e220 Outstanding Requests: * msgid 1, origid 1, status InProgress outstanding referrals 0, parent count 0 ld 0x7f25df51e220 request count 1 (abandoned 0) ** ld 0x7f25df51e220 Response Queue: Empty ld 0x7f25df51e220 response count 0 ldap_chkResponseList ld 0x7f25df51e220 msgid 1 all 1 ldap_chkResponseList returns ld 0x7f25df51e220 NULL ldap_int_select read1msg: ld 0x7f25df51e220 msgid 1 all 1 ber_get_next ber_get_next: tag 0x30 len 42 contents: read1msg: ld 0x7f25df51e220 msgid 1 message type extended-result ber_scanf fmt ({eAA) ber: read1msg: ld 0x7f25df51e220 0 new referrals read1msg: mark request completed, ld 0x7f25df51e220 msgid 1 request done: ld 0x7f25df51e220 msgid 1 res_errno: 2, res_error: <unsupported extended operation>, res_matched: <> ldap_free_request (origid 1, msgid 1) ldap_parse_extended_result ber_scanf fmt ({eAA) ber: ldap_parse_result ber_scanf fmt ({iAA) ber: ber_scanf fmt (}) ber: ldap_msgfree ldap_err2string ldap_start_tls: Protocol error (2) additional info: unsupported extended operation ldap_free_connection 1 1 ldap_send_unbind ber_flush2: 7 bytes to sd 3 ldap_free_connection: actually freed So no good information there neither. In /var/log/syslog i get: Jun 6 08:55:42 master slapd[21383]: conn=1008 fd=23 ACCEPT from IP=83.209.243.253:56440 (IP=0.0.0.0:389) Jun 6 08:55:42 master slapd[21383]: conn=1008 op=0 EXT oid=1.3.6.1.4.1.1466.20037 Jun 6 08:55:42 master slapd[21383]: conn=1008 op=0 do_extended: unsupported operation "1.3.6.1.4.1.1466.20037" Jun 6 08:55:42 master slapd[21383]: conn=1008 op=0 RESULT tag=120 err=2 text=unsupported extended operation Jun 6 08:55:42 master slapd[21383]: conn=1008 op=1 UNBIND Jun 6 08:55:42 master slapd[21383]: conn=1008 fd=23 closed If i portscan the host i get the following: Starting Nmap 6.40 ( http://nmap.org ) at 2014-06-06 08:56 CEST Nmap scan report for h83-209-243-253.static.se.alltele.net (83.209.243.253) Host is up (0.0072s latency). Not shown: 996 closed ports PORT STATE SERVICE 22/tcp open ssh 80/tcp open http 389/tcp open ldap 636/tcp open ldapssl But when i check certs root@master:~# openssl s_client -connect daladevelop.se:636 -showcerts -state CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:unknown state 140244859233952:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:177: --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 0 bytes and written 317 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE --- And i feel like i am clearly out in deep water not knowing at all where to go from here. Anny hints appreciated on what to do or to get better debug logging... EDIT: This is my config slapcated from cn=config and it does not mention at all anything about TLS. I have inserted my certinfo.ldif: root@master:~# cat certinfo.ldif dn: cn=config add: olcTLSCACertificateFile olcTLSCACertificateFile: /etc/ssl/certs/cacert.pem - add: olcTLSCertificateFile olcTLSCertificateFile: /etc/ssl/certs/daladevelop_slapd_cert.pem - add: olcTLSCertificateKeyFile olcTLSCertificateKeyFile: /etc/ssl/private/daladevelop_slapd_key.pem and when doing that i only got this as an answer. root@master:~# sudo ldapmodify -Y EXTERNAL -H ldapi:/// -f certinfo.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 modifying entry "cn=config" So still no wiser.

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• ScriptAlias makes requests match too many Location blocks. What is going on?

  - by brain99

  We wish to restrict access on our development server to those users who have a valid SSL Client certificate. We are running Apache 2.2.16 on Debian 6. However, for some sections (mainly git-http, setup with gitolite on https://my.server/git/) we need an exception since many git clients don't support SSL client certificates. I have succeeded in requiring client cert authentication for the server, and in adding exceptions for some locations. However, it seems this does not work for git. The current setup is as follows: SSLCACertificateFile ssl-certs/client-ca-certs.crt <Location /> SSLVerifyClient require SSLVerifyDepth 2 </Location> # this works <Location /foo> SSLVerifyClient none </Location> # this does not <Location /git> SSLVerifyClient none </Location> I have also tried an alternative solution, with the same results: # require authentication everywhere except /git and /foo <LocationMatch "^/(?!git|foo)"> SSLVerifyClient require SSLVerifyDepth 2 </LocationMatch> In both these cases, a user without client certificate can perfectly access my.server/foo/, but not my.server/git/ (access is refused because no valid client certificate is given). If I disable SSL client certificate authentication completely, my.server/git/ works ok. The ScriptAlias problem Gitolite is setup using the ScriptAlias directive. I have found that the problem occurs with any similar ScriptAlias: # Gitolite ScriptAlias /git/ /path/to/gitolite-shell/ ScriptAlias /gitmob/ /path/to/gitolite-shell/ # My test ScriptAlias /test/ /path/to/test/script/ Note that /path/to/test/script is a file, not a directory, the same goes for /path/to/gitolite-shell/ My test script simply prints out the environment, super simple: #!/usr/bin/perl print "Content-type:text/plain\n\n"; print "TEST\n"; @keys = sort(keys %ENV); foreach (@keys) { print "$_ => $ENV{$_}\n"; } It seems that if I go to https://my.server/test/someLocation, that any SSLVerifyClient directives are being applied which are in Location blocks that match /test/someLocation or just /someLocation. If I have the following config: <LocationMatch "^/f"> SSLVerifyClient require SSLVerifyDepth 2 </LocationMatch> Then, the following URL requires a client certificate: https://my.server/test/foo. However, the following URL does not: https://my.server/test/somethingElse/foo Note that this only seems to apply for SSL configuration. The following has no effect whatsoever on https://my.server/test/foo: <LocationMatch "^/f"> Order allow,deny Deny from all </LocationMatch> However, it does block access to https://my.server/foo. This presents a major problem for cases where I have some project running at https://my.server/project (which has to require SSL client certificate authorization), and there is a git repository for that project at https://my.server/git/project which cannot require a SSL client certificate. Since the /git/project URL also gets matched agains /project Location blocks, such a configuration seems impossible given my current findings. Question: Why is this happening, and how do I solve my problem? In the end, I want to require SSL Client certificate authorization for the whole server except for /git and /someLocation, with as minimal configuration as possible (so I don't have to modify the configuration each time something new is deployed or a new git repository is added). Note: I rewrote my question (instead of just adding more updates at the bottom) to take into account my new findings and hopefully make this more clear.

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• Apache sends plain-text response when accessing SSL-enabled site without HTTPS

  - by animuson

  I've never encountered something such as this before. I was attempting to simply redirect the page to the HTTPS version if it determined that HTTPS was off, but instead it's displaying an HTML page rather than actually redirecting; and even odder, it's displaying it as text/plain! The VirtualHost Declaration (Sort of): ServerAdmin [email protected] DocumentRoot "/path/to/files" ServerName example.com SSLEngine On SSLCertificateFile /etc/ssh/certify/example.com.crt SSLCertificateKeyFile /etc/ssh/certify/example.com.key SSLCertificateChainFile /etc/ssh/certify/sub.class1.server.ca.pem <Directory "/path/to/files/"> AllowOverride All Options +FollowSymLinks DirectoryIndex index.php Order allow,deny Allow from all </Directory> RewriteEngine On RewriteCond %{HTTPS} off RewriteRule .* https://example.com:6161 [R=301] The Page Output: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>301 Moved Permanently</title> </head><body> <h1>Moved Permanently</h1> <p>The document has moved <a href="https://example.com:6161">here</a>.</p> <hr> <address>Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/1.0.0e DAV/2 Server at example.com Port 443</address> </body></html> I've tried moving the Rewrite stuff up above the SSL stuff hoping it'd do something and nothing happens. If I view the page with via HTTPS, it displays fine like it should. It's obviously detecting that I'm trying to rewrite the path, but it's not acting. The Apache error log does not indicate anything to me that might have gone wrong. When I remove the RewriteRules: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>400 Bad Request</title> </head><body> <h1>Bad Request</h1> <p>Your browser sent a request that this server could not understand.<br /> Reason: You're speaking plain HTTP to an SSL-enabled server port.<br /> Instead use the HTTPS scheme to access this URL, please.<br /> <blockquote>Hint: <a href="https://example.com/"><b>https://example.com/</b></a></blockquote></p> <p>Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.</p> <hr> <address>Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/1.0.0e DAV/2 Server at example.com Port 443</address> </body></html> I get the standard "you can't do this because you're not using SSL" response, which is also provided in text/plain rather than being rendered as HTML. This would make sense, it should only work for HTTPS-enabled connections, but I still want to redirect them to the HTTPS connection when it determines that it is not enabled. Thinking I could circumvent the system: I tried adding a ErrorDocument 400 https://example.com:6161 to the config file instead of using RewriteRules, and that just gave me a new message, still no cheese. <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>302 Found</title> </head><body> <h1>Found</h1> <p>The document has moved <a href="https://example.com:6161">here</a>.</p> <hr> <address>Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/1.0.0e DAV/2 Server at example.com Port 443</address> </body></html> How can I force Apache to actually redirect rather than displaying a "301" page that shows HTML in plain-text format?

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• Too many Bind query (cache) denied, DNS attack?

  - by Jake

  Once Bind crashed and I did: tail -f /var/log/messages I see a massive number of logs every second. Is this a DNS attack? or is there something wrong? Sometimes I see a domain in logs like this: dOmAin.com (upper and lower). As you see there is only one single domain in the logs with different IPs Oct 10 02:21:26 mail named[20831]: client 74.125.189.18#38921: query (cache) 'ns1.domain2.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 192.221.144.171#38833: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 74.125.189.17#42428: query (cache) 'ns2.domain2.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 192.221.146.27#37899: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 193.203.82.66#39263: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 8.0.16.170#59723: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 80.169.197.66#32903: query (cache) 'dOmAin.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 134.58.60.1#47558: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 192.221.146.34#47387: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 8.0.16.8#59392: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 74.125.189.19#64395: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 217.72.163.3#42190: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 83.146.21.252#22020: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 192.221.146.116#57342: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 193.203.82.66#52020: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 8.0.16.72#64317: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 80.169.197.66#31989: query (cache) 'dOmAin.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 74.125.189.18#47436: query (cache) 'ns2.domain2.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 74.125.189.16#44005: query (cache) 'ns1.domain2.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 85.132.31.10#50379: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 94.241.128.3#60106: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 85.132.31.10#59118: query (cache) 'domain.com/A/IN' denied Oct 10 02:21:26 mail named[20831]: client 212.95.135.78#27811: query (cache) 'domain.com/A/IN' denied /etc/resolv.conf ; generated by /sbin/dhclient-script nameserver 4.2.2.4 nameserver 8.8.4.4 Bind config: // generated by named-bootconf.pl options { directory "/var/named"; /* * If there is a firewall between you and nameservers you want * to talk to, you might need to uncomment the query-source * directive below. Previous versions of BIND always asked * questions using port 53, but BIND 8.1 uses an unprivileged * port by default. */ // query-source address * port 53; allow-transfer { none; }; allow-recursion { localnets; }; //listen-on-v6 { any; }; notify no; }; // // a caching only nameserver config // controls { inet 127.0.0.1 allow { localhost; } keys { rndckey; }; }; zone "." IN { type hint; file "named.ca"; }; zone "localhost" IN { type master; file "localhost.zone"; allow-update { none; }; }; zone "0.0.127.in-addr.arpa" IN { type master; file "named.local"; allow-update { none; }; };

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• VPS 512 MB RAM with WordPressMU comes to consumes lots of memory

  - by CAPitalZ

  I have googled for days and gathered all optimization suggestions and tried. My sites are not getting any high hits. May be like 100 hits per day [all my sites combined]. Here are my specs I have 512 MB RAM VPS with burstable 1024 MB. Centos 5 32-bit & cPanel/WHM Apache 2.2 MySQL 5.0 PHP 5.3.2 Here is my Configs I have 2 WordPressMU production sites, and 1 test site my.cnf # The following options will be passed to all MySQL clients [client] #password = your_password port = 3306 socket = /var/lib/mysql/mysql.sock # Here follows entries for some specific programs # The MySQL server [mysqld] port = 3306 socket = /var/lib/mysql/mysql.sock skip-locking skip-bdb skip-innodb key_buffer = 16M max_allowed_packet = 1M table_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M #CAPitalZ thread_cache_size=8 thread_concurrency=4 #query_cache_type=1 #query_cache_limit=1M query_cache_size=16M concurrent_insert=2 low_priority_updates=1 max_connections=50 tmp_table_size=16M max_heap_table_size=16M join_buffer_size=1M interactive_timeout=25 wait_timeout=1000 #connect_timout=10 not able to restart mysql max_connect_errors=10 # Don't listen on a TCP/IP port at all. This can be a security enhancement, # if all processes that need to connect to mysqld run on the same host. # All interaction with mysqld must be made via Unix sockets or named pipes. # Note that using this option without enabling named pipes on Windows # (via the "enable-named-pipe" option) will render mysqld useless! # skip-networking # Disable Federated by default skip-federated # Replication Master Server (default) # binary logging is required for replication log-bin=mysql-bin # required unique id between 1 and 2^32 - 1 # defaults to 1 if master-host is not set # but will not function as a master if omitted server-id = 1 [mysqld_safe] open_files_limit=8192 [mysqldump] quick max_allowed_packet = 16M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [isamchk] key_buffer = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [myisamchk] key_buffer = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [mysqlhotcopy] interactive-timeout httpd.conf I have unselected many modules and recompiled using EasyApache in WHM. Only have the following modules built Deflate Expires Fileprotect Imagemap MPM Prefork Version [default] EAccelerator for PHP Bcmath Calendar CurlSSL [I'm using Curl. But I don't have any https sites] Expat GD [for image cropping] Gettext Imap Mbregex [default] Mbstring [need both Mbregex and Mbstring for utf-8] Mysql of the system MySQL "Improved" extension. Sockets TTF (FreeType) [I'm using custom font] Zlib Under Global Configuration I only have FollowSymLinks enabled I Have TraceEnable, ServerSignature, FileETag OFF ServerTokens ProductOnly DirectoryIndex Priority has index.php as the first one I have removed Clamd [Clam Anti-virus] SpamAssasin is Off Under Tweak Settings Default catch-all/default address behavior for new accounts. This is set to "fail" All stats programs turned off I have eAccelerator installed and checked in phpinfo and its working [Pre VirtualHost Include under WHM] Timeout 20 KeepAlive On MaxKeepAliveRequests 200 KeepAliveTimeout 3 MinSpareServers 1 MaxSpareServers 3 StartServers 1 ServerLimit 50 MaxClients 50 MaxRequestsPerChild 4000 ExtendedStatus Off #ServerType standalone this throws error HostnameLookups Off <Directory "/"> AllowOverride None </Directory> My sites will take ages to load and WHM/CPanel will not even load. adadaa.com/ http://adadaa.net/ kadais.ca/ My average memory consumption is like 1000 MB! [yes always bursting] The process that consumes most CPU and also most memory is mysql But I also get like 15 httpd processes [when its bursting] I already got warning from cpuwatchcheck saying "While processing, the cpu has been maxed out for more than a 6 hour period. The current load/uptime line on the server at the time of this email is 07:00:37 up 11:30, 0 users, load average: 14.64, 16.79, 20.07" I don't know, I have tried switching these config values many different times, but nothing seems to work. Please show some light... Thanks

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• Different Not Automatically Implies Better

  - by Alois Kraus

  Originally posted on: http://geekswithblogs.net/akraus1/archive/2013/11/05/154556.aspxRecently I was digging deeper why some WCF hosted workflow application did consume quite a lot of memory although it did basically only load a xaml workflow. The first tool of choice is Process Explorer or even better Process Hacker (has more options and the best feature copy&paste does work). The three most important numbers of a process with regards to memory are Working Set, Private Working Set and Private Bytes. Working set is the currently consumed physical memory (parts can be shared between processes e.g. loaded dlls which are read only) Private Working Set is the physical memory needed by this process which is not shareable Private Bytes is the number of non shareable which is only visible in the current process (e.g. all new, malloc, VirtualAlloc calls do create private bytes) When you have a bigger workflow it can consume under 64 bit easily 500MB for a 1-2 MB xaml file. This does not look very scalable. Under 64 bit the issue is excessive private bytes consumption and not the managed heap. The picture is quite different for 32 bit which looks a bit strange but it seems that the hosted VB compiler is a lot less memory hungry under 32 bit. I did try to repro the issue with a medium sized xaml file (400KB) which does contain 1000 variables and 1000 if which can be represented by C# code like this: string Var1; string Var2; ... string Var1000; if (!String.IsNullOrEmpty(Var1) ) { Console.WriteLine(“Var1”); } if (!String.IsNullOrEmpty(Var2) ) { Console.WriteLine(“Var2”); } ....   Since WF is based on VB.NET expressions you are bound to the hosted VB.NET compiler which does result in (x64) 140 MB of private bytes which is ca. 140 KB for each if clause which is quite a lot if you think about the actually present functionality. But there is hope. .NET 4.5 does allow now C# expressions for WF which is a major step forward for all C# lovers. I did create some simple patcher to “cross compile” my xaml to C# expressions. Lets look at the result: C# Expressions VB Expressions x86 x86 On my home machine I have only 32 bit which gives you quite exactly half of the memory consumption under 64 bit. C# expressions are 10 times more memory hungry than VB.NET expressions! I wanted to do more with less memory but instead it did consume a magnitude more memory. That is surprising to say the least. The workflow does initialize in about the same time under x64 and x86 where the VB code does it in 2s whereas the C# version needs 18s. Also nearly ten times slower. That is a too high price to pay for any bigger sized xaml workflow to convert from VB.NET to C# expressions. If I do reduce the number of expressions to 500 then it does need 400MB which is about half of the memory. It seems that the cost per if does rise linear with the number of total expressions in a xaml workflow.  Expression Language Cost per IF Startup Time C# 1000 Ifs x64 1,5 MB 18s C# 500 Ifs x64 750 KB 9s VB 1000 Ifs x64 140 KB 2s VB 500 Ifs x64 70 KB 1s Now we can directly compare two MS implementations. It is clear that the VB.NET compiler uses the same underlying structure but it has much higher offset compared to the highly inefficient C# expression compiler. I have filed a connect bug here with a harsher wording about recent advances in memory consumption. The funniest thing is that one MS employee did give an Azure AppFabric demo around early 2011 which was so slow that he needed to investigate with xperf. He was after startup time and the call stacks with regards to VB.NET expression compilation were remarkably similar. In fact I only found this post by googling for parts of my call stacks. … “C# expressions will be coming soon to WF, and that will have different performance characteristics than VB” … What did he know Jan 2011 what I did no know until today? ;-). He knew that C# expression will come but that they will not be automatically have better footprint. It is about time to fix that. In its current state C# expressions are not usable for bigger workflows. That also explains the headline for today. You can cheat startup time by prestarting workflows so that the demo looks nice and snappy but it does hurt scalability a lot since you do need much more memory than necessary. I did find the stacks by enabling virtual allocation tracking within XPerf which is still the best tool out there. But first you need to look at your process to check where the memory is hiding: For the C# Expression compiler you do not need xperf. You can directly dump the managed heap and check with a profiler of your choice. But if the allocations are happening on the Private Data ( VirtualAlloc ) you can find it with xperf. There is a nice video on channel 9 explaining VirtualAlloc tracking it in greater detail. If your data allocations are on the Heap it does mean that the C/C++ runtime did create a heap for you where all malloc, new calls do allocate from it. You can enable heap tracing with xperf and full call stack support as well which is doable via xperf like it is shown also on channel 9. Or you can use WPRUI directly: To make “Heap Usage” it work you need to set for your executable the tracing flags (before you start it). For example devenv.exe HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\devenv.exe DWORD TracingFlags 1 Do not forget to disable it after you did complete profiling the process or it will impact the startup time quite a lot. You can with xperf attach directly to a running process and collect heap allocation information from a gone wild process. Very handy if you need to find out what a process was doing which has arrived in a funny state. “VirtualAlloc usage” does work without explicitly enabling stuff for a specific process and is always on machine wide. I had issues on my Windows 7 machines with the call stack collection and the latest Windows 8.1 Performance Toolkit. I was told that WPA from Windows 8.0 should work fine but I do not want to downgrade.

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• dns server bind is not work [closed]

  - by user1742080

  I just installed bind on RHEL 6 and point a domain to that server. but actually when i ping domain it returns error 1214: Here is my named.conf: // // named.conf // // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS // server as a caching only nameserver (as a localhost DNS resolver only). // // See /usr/share/doc/bind*/sample/ for example named configuration files. // options { listen-on port 53 { any; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query { any; }; recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; zone "mydomain.com"{ type master; file "/var/named/data/named.mydomain.com"; allow-update { none; }; }; AND The content of "/var/named/data/named.mydomain.com": 1 $TTL 38400 2 3 mydomain.com. IN SOA ns1.mydomain.com. milad.yahoo.com. ( 4 2012101201 ; serial number YYMMDDNN 5 28800 ; Refresh 6 7200 ; Retry 7 864000 ; Expire 8 38400 ; Min TTL 9 ) 10 11 mydomain.com. IN A 1.2.3.4 12 www IN A 1.2.3.4 13 ns1.mydomain.com. IN A 1.2.3.4 14 ns2.mydomain.com. IN A 1.2.3.4 15 mydomain.com. IN NS ns1.mydomain.com. 16 mydomain.com. IN NS ns2.mydomain.com. AND i'm sure the named service is running: [root@server ~]# service named status version: 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.3 CPUs found: 8 worker threads: 8 number of zones: 20 debug level: 0 xfers running: 0 xfers deferred: 0 soa queries in progress: 0 query logging is OFF recursive clients: 0/0/1000 tcp clients: 0/100 server is up and running named (pid 26299) is running...

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• Restructuring a large Chrome Extension/WebApp

  - by A.M.K

  I have a very complex Chrome Extension that has gotten too large to maintain in its current format. I'd like to restructure it, but I'm 15 and this is the first webapp or extension of it's type I've built so I have no idea how to do it. TL;DR: I have a large/complex webapp I'd like to restructure and I don't know how to do it. Should I follow my current restructure plan (below)? Does that sound like a good starting point, or is there a different approach that I'm missing? Should I not do any of the things I listed? While it isn't relevant to the question, the actual code is on Github and the extension is on the webstore. The basic structure is as follows: index.html <html> <head> <link href="css/style.css" rel="stylesheet" /> <!-- This holds the main app styles --> <link href="css/widgets.css" rel="stylesheet" /> <!-- And this one holds widget styles --> </head> <body class="unloaded"> <!-- Low-level base elements are "hardcoded" here, the unloaded class is used for transitions and is removed on load. i.e: --> <div class="tab-container" tabindex="-1"> <!-- Tab nav --> </div> <!-- Templates for all parts of the application and widgets are stored as elements here. I plan on changing these to <script> elements during the restructure since <template>'s need valid HTML. --> <template id="template.toolbar"> <!-- Template content --> </template> <!-- Templates end --> <!-- Plugins --> <script type="text/javascript" src="js/plugins.js"></script> <!-- This contains the code for all widgets, I plan on moving this online and downloading as necessary soon. --> <script type="text/javascript" src="js/widgets.js"></script> <!-- This contains the main application JS. --> <script type="text/javascript" src="js/script.js"></script> </body> </html> widgets.js (initLog || (window.initLog = [])).push([new Date().getTime(), "A log is kept during page load so performance can be analyzed and errors pinpointed"]); // Widgets are stored in an object and extended (with jQuery, but I'll probably switch to underscore if using Backbone) as necessary var Widgets = { 1: { // Widget ID, this is set here so widgets can be retreived by ID id: 1, // Widget ID again, this is used after the widget object is duplicated and detached size: 3, // Default size, medium in this case order: 1, // Order shown in "store" name: "Weather", // Widget name interval: 300000, // Refresh interval nicename: "weather", // HTML and JS safe widget name sizes: ["tiny", "small", "medium"], // Available widget sizes desc: "Short widget description", settings: [ { // Widget setting specifications stored as an array of objects. These are used to dynamically generate widget setting popups. type: "list", nicename: "location", label: "Location(s)", placeholder: "Enter a location and press Enter" } ], config: { // Widget settings as stored in the tabs object (see script.js for storage information) size: "medium", location: ["San Francisco, CA"] }, data: {}, // Cached widget data stored locally, this lets it work offline customFunc: function(cb) {}, // Widgets can optionally define custom functions in any part of their object refresh: function() {}, // This fetches data from the web and caches it locally in data, then calls render. It gets called after the page is loaded for faster loads render: function() {} // This renders the widget only using information from data, it's called on page load. } }; script.js (initLog || (window.initLog = [])).push([new Date().getTime(), "These are also at the end of every file"]); // Plugins, extends and globals go here. i.e. Number.prototype.pad = .... var iChrome = function(refresh) { // The main iChrome init, called with refresh when refreshing to not re-run libs iChrome.Status.log("Starting page generation"); // From now on iChrome.Status.log is defined, it's used in place of the initLog iChrome.CSS(); // Dynamically generate CSS based on settings iChrome.Tabs(); // This takes the tabs stored in the storage (see fetching below) and renders all columns and widgets as necessary iChrome.Status.log("Tabs rendered"); // These will be omitted further along in this excerpt, but they're used everywhere // Checks for justInstalled => show getting started are run here /* The main init runs the bare minimum required to display the page, this sets all non-visible or instantly need things (such as widget dragging) on a timeout */ iChrome.deferredTimeout = setTimeout(function() { iChrome.deferred(refresh); // Pass refresh along, see above }, 200); }; iChrome.deferred = function(refresh) {}; // This calls modules one after the next in the appropriate order to finish rendering the page iChrome.Search = function() {}; // Modules have a base init function and are camel-cased and capitalized iChrome.Search.submit = function(val) {}; // Methods within modules are camel-cased and not capitalized /* Extension storage is async and fetched at the beginning of plugins.js, it's then stored in a variable that iChrome.Storage processes. The fetcher checks to see if processStorage is defined, if it is it gets called, otherwise settings are left in iChromeConfig */ var processStorage = function() { iChrome.Storage(function() { iChrome.Templates(); // Templates are read from their elements and held in a cache iChrome(); // Init is called }); }; if (typeof iChromeConfig == "object") { processStorage(); } Objectives of the restructure Memory usage: Chrome apparently has a memory leak in extensions, they're trying to fix it but memory still keeps on getting increased every time the page is loaded. The app also uses a lot on its own. Code readability: At this point I can't follow what's being called in the code. While rewriting the code I plan on properly commenting everything. Module interdependence: Right now modules call each other a lot, AFAIK that's not good at all since any change you make to one module could affect countless others. Fault tolerance: There's very little fault tolerance or error handling right now. If a widget is causing the rest of the page to stop rendering the user should at least be able to remove it. Speed is currently not an issue and I'd like to keep it that way. How I think I should do it The restructure should be done using Backbone.js and events that call modules (i.e. on storage.loaded = init). Modules should each go in their own file, I'm thinking there should be a set of core files that all modules can rely on and call directly and everything else should be event based. Widget structure should be kept largely the same, but maybe they should also be split into their own files. AFAIK you can't load all templates in a folder, therefore they need to stay inline. Grunt should be used to merge all modules, plugins and widgets into one file. Templates should also all be precompiled. Question: Should I follow my current restructure plan? Does that sound like a good starting point, or is there a different approach that I'm missing? Should I not do any of the things I listed? Do applications written with Backbone tend to be more intensive (memory and speed) than ones written in Vanilla JS? Also, can I expect to improve this with a proper restructure or is my current code about as good as can be expected?

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• postfix relaying all mail through office365 problems

  - by amrith

  This is a rather long question with a long list of things tried and travails so please bear with me. The summary is this. I am able to relay email from ubuntu through office365 using postfix; the configuration works. It only works as one of the users; more specifically the user who authenticates against office365 is the only valid "from" More details follow. I have a machine in Amazon's cloud on which I run a bunch of jobs and would like to have statuses mailed over to me. I use office365 at work so I want to relay mail through office365. I'm most familiar with postfix so I used that as the MTA. Configuration is ubuntu 12.04LTS; I've installed postfix and mail-utils. For this example, let me say my company is "company.com" and the machine in question (through an elastic IP and a DNS entry) is called "plaything.company.com". hostname is set to "plaything.company.com", so is /etc/mailname On plaything, I have the following users registered alpha, bravo, and charlie. I have the following configuration files. alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no config_directory = /etc/postfix inet_interfaces = all inet_protocols = ipv4 mailbox_size_limit = 0 mydestination = plaything.company.com, localhost.company.com, , localhost myhostname = plaything.company.com mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname readme_directory = no recipient_delimiter = + relayhost = [smtp.office365.com]:587 sender_canonical_maps = hash:/etc/postfix/sender_canonical smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_sasl_tls_security_options = noanonymous smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtp_use_tls = yes smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes As the machine is called plaything.company.com I went through the exercise of registering all the appropriate DNS entries to make office365 recognize that I owned plaything.company.com and allowed me to create a user called [email protected] in office365. In office365, I setup [email protected] as having another email address of [email protected]. Then, I made the following sender_canonical [email protected] [email protected] I created a sasl_passwd file that reads: smtp.office365.com [email protected]:123456password123456 let's just say that the password for [email protected] is 1234...456 With all this setup, login as alpha and mail [email protected] Cc: Subject: test test and the whole thing works wonderfully. email gets sent off by postfix, TLS works like a champ, authenticates as daemon@... and [email protected] in Office365 gets an email message. The issue comes up when logged in as bravo to the machine. sender is [email protected] and office365 says: status=bounced (host smtp.office365.com[132.245.12.25] said: 550 5.7.1 Client does not have permissions to send as this sender (in reply to end of DATA command)) this is because I'm trying to send mail as bravo@... and authenticating with office365 as daemon@.... The reason it works with alpha@... is because in office365, I setup [email protected] as having another email address of [email protected]. In Postfix Relay to Office365, Miles Erickson answers the question thusly: Don't send mail to Office365 as a user from your Office365-hosted e-mail domain. Use a subdomain instead, e.g. [email protected] instead of [email protected]. It wouldn't hurt to set up an SPF record for services.mydomain.com or whatever you decide to use. Don't authenticate against mail.messaging.microsoft.com as an Office365 user. Just connect on port 25 and deliver the mail to your domain as any foreign SMTP agent would do. OK, I've done #1, I have those records on DNS but for the most part they are not relevant once Office365 recognizes that I own the domain. Here are those records: CNAME records: - msoid.plaything.company.com - autodiscover.plaything.company.com MX record: - plaything.company.com (plaything-company-com.mail.protection.outlook.com) TXT record: - plaything.company.com (v=spf1 include:spf.protection.outlook.com -all) I've tried #2 but no matter what I do, office365 just blows away the connection with "not authenticated". I can try even a simple telnet to port 25 and attempt to send and it doesn't work. 250 BY2PR01CA007.outlook.office365.com Hello [54.221.245.236] 530 5.7.1 Client was not authenticated Connection closed by foreign host. Is there someone out there who has this kind of a configuration working where multiple users on a linux machine are able to relay mail using postfix through office365? There has to be someone out there doing this who can tell me what is wrong with my setup ...

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• DNS server not functioning correctly

  - by Shamit Shrestha

  I have setup a DNS server which isnt working properly. My domain is accswift.com which has glued to two name servers ns1.accswift.com and ns2.accswift.com for the same IP address - 203.78.164.18. On domain end everything should be fine. Please check -http://www.intodns.com/accswift.com I am sure its the problem with the linux server. Can anyone help me find where the problem is for me? Below is the settings that I have in the server. ====================== DIG [root@accswift ~]# dig accswift.com ; << DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.6 << accswift.com ;; global options: +cmd ;; Got answer: ;; -HEADER<<- opcode: QUERY, status: NOERROR, id: 11275 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;accswift.com. IN A ;; ANSWER SECTION: accswift.com. 38400 IN A 203.78.164.18 ;; AUTHORITY SECTION: accswift.com. 38400 IN NS ns1.accswift.com. accswift.com. 38400 IN NS ns2.accswift.com. ;; ADDITIONAL SECTION: ns1.accswift.com. 38400 IN A 203.78.164.18 ns2.accswift.com. 38400 IN A 203.78.164.18 ;; Query time: 1 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Wed Nov 6 20:12:16 2013 ;; MSG SIZE rcvd: 114 ============== IP Tables settings vi /etc/sysconfig/iptables *filter :FORWARD ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A FORWARD -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A FORWARD -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A OUTPUT -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A INPUT -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A INPUT -p udp -m udp --sport 53 -j ACCEPT -A OUTPUT -p udp -m udp --dport 53 -j ACCEPT COMMIT Completed on Fri Sep 20 04:20:33 2013 Generated by webmin *mangle :FORWARD ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT Completed Generated by webmin *nat :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT ====DNS settings vi /var/named/accswift.com.host $ttl 38400 @ IN SOA ns1.accswift.com. root.ns1.accswift.com. ( 1382936091 10800 3600 604800 38400 ) @ IN NS ns1.accswift.com. @ IN NS ns2.accswift.com. accswift.com. IN A 203.78.164.18 accswift.com. IN NS ns1.accswift.com. www.accswift.com. IN A 203.78.164.18 ftp.accswift.com. IN A 203.78.164.18 m.accswift.com. IN A 203.78.164.18 ns1 IN A 203.78.164.18 ns2 IN A 203.78.164.18 localhost.accswift.com. IN A 127.0.0.1 webmail.accswift.com. IN A 203.78.164.18 admin.accswift.com. IN A 203.78.164.18 mail.accswift.com. IN A 203.78.164.18 accswift.com. IN MX 5 mail.accswift.com. ====Named.conf vi /etc/named.conf options { listen-on port 53 { 127.0.0.1; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query { any; }; recursion yes; allow-recursion { localhost; 192.168.2.0/24; }; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; forward first; forwarders {192.168.1.1;}; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; zone "accswift.com" { type master; file "/var/named/accswift.com.hosts"; allow-transfer { 127.0.0.1; localnets; 208.73.211.69; }; }; zone "ns1.accswift.com" { type master; file "/var/named/ns1.accswift.com.hosts"; }; ==================================== Can anybody find any flaw in this? I am still unable to reach accswift.com from any other ISP. But it is browsable from the same network though. Thanks in advance.

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• Squid + Dans Guardian (simple configuration)

  - by The Digital Ninja

  I just built a new proxy server and compiled the latest versions of squid and dansguardian. We use basic authentication to select what users are allowed outside of our network. It seems squid is working just fine and accepts my username and password and lets me out. But if i connect to dans guardian, it prompts for username and password and then displays a message saying my username is not allowed to access the internet. Its pulling my username for the error message so i know it knows who i am. The part i get confused on is i thought that part was handled all by squid, and squid is working flawlessly. Can someone please double check my config files and tell me if i'm missing something or there is some new option i must set to get this to work. dansguardian.conf # Web Access Denied Reporting (does not affect logging) # # -1 = log, but do not block - Stealth mode # 0 = just say 'Access Denied' # 1 = report why but not what denied phrase # 2 = report fully # 3 = use HTML template file (accessdeniedaddress ignored) - recommended # reportinglevel = 3 # Language dir where languages are stored for internationalisation. # The HTML template within this dir is only used when reportinglevel # is set to 3. When used, DansGuardian will display the HTML file instead of # using the perl cgi script. This option is faster, cleaner # and easier to customise the access denied page. # The language file is used no matter what setting however. # languagedir = '/etc/dansguardian/languages' # language to use from languagedir. language = 'ukenglish' # Logging Settings # # 0 = none 1 = just denied 2 = all text based 3 = all requests loglevel = 3 # Log Exception Hits # Log if an exception (user, ip, URL, phrase) is matched and so # the page gets let through. Can be useful for diagnosing # why a site gets through the filter. on | off logexceptionhits = on # Log File Format # 1 = DansGuardian format 2 = CSV-style format # 3 = Squid Log File Format 4 = Tab delimited logfileformat = 1 # Log file location # # Defines the log directory and filename. #loglocation = '/var/log/dansguardian/access.log' # Network Settings # # the IP that DansGuardian listens on. If left blank DansGuardian will # listen on all IPs. That would include all NICs, loopback, modem, etc. # Normally you would have your firewall protecting this, but if you want # you can limit it to only 1 IP. Yes only one. filterip = # the port that DansGuardian listens to. filterport = 8080 # the ip of the proxy (default is the loopback - i.e. this server) proxyip = 127.0.0.1 # the port DansGuardian connects to proxy on proxyport = 3128 # accessdeniedaddress is the address of your web server to which the cgi # dansguardian reporting script was copied # Do NOT change from the default if you are not using the cgi. # accessdeniedaddress = 'http://YOURSERVER.YOURDOMAIN/cgi-bin/dansguardian.pl' # Non standard delimiter (only used with accessdeniedaddress) # Default is enabled but to go back to the original standard mode dissable it. nonstandarddelimiter = on # Banned image replacement # Images that are banned due to domain/url/etc reasons including those # in the adverts blacklists can be replaced by an image. This will, # for example, hide images from advert sites and remove broken image # icons from banned domains. # 0 = off # 1 = on (default) usecustombannedimage = 1 custombannedimagefile = '/etc/dansguardian/transparent1x1.gif' # Filter groups options # filtergroups sets the number of filter groups. A filter group is a set of content # filtering options you can apply to a group of users. The value must be 1 or more. # DansGuardian will automatically look for dansguardianfN.conf where N is the filter # group. To assign users to groups use the filtergroupslist option. All users default # to filter group 1. You must have some sort of authentication to be able to map users # to a group. The more filter groups the more copies of the lists will be in RAM so # use as few as possible. filtergroups = 1 filtergroupslist = '/etc/dansguardian/filtergroupslist' # Authentication files location bannediplist = '/etc/dansguardian/bannediplist' exceptioniplist = '/etc/dansguardian/exceptioniplist' banneduserlist = '/etc/dansguardian/banneduserlist' exceptionuserlist = '/etc/dansguardian/exceptionuserlist' # Show weighted phrases found # If enabled then the phrases found that made up the total which excedes # the naughtyness limit will be logged and, if the reporting level is # high enough, reported. on | off showweightedfound = on # Weighted phrase mode # There are 3 possible modes of operation: # 0 = off = do not use the weighted phrase feature. # 1 = on, normal = normal weighted phrase operation. # 2 = on, singular = each weighted phrase found only counts once on a page. # weightedphrasemode = 2 # Positive result caching for text URLs # Caches good pages so they don't need to be scanned again # 0 = off (recommended for ISPs with users with disimilar browsing) # 1000 = recommended for most users # 5000 = suggested max upper limit urlcachenumber = # # Age before they are stale and should be ignored in seconds # 0 = never # 900 = recommended = 15 mins urlcacheage = # Smart and Raw phrase content filtering options # Smart is where the multiple spaces and HTML are removed before phrase filtering # Raw is where the raw HTML including meta tags are phrase filtered # CPU usage can be effectively halved by using setting 0 or 1 # 0 = raw only # 1 = smart only # 2 = both (default) phrasefiltermode = 2 # Lower casing options # When a document is scanned the uppercase letters are converted to lower case # in order to compare them with the phrases. However this can break Big5 and # other 16-bit texts. If needed preserve the case. As of version 2.7.0 accented # characters are supported. # 0 = force lower case (default) # 1 = do not change case preservecase = 0 # Hex decoding options # When a document is scanned it can optionally convert %XX to chars. # If you find documents are getting past the phrase filtering due to encoding # then enable. However this can break Big5 and other 16-bit texts. # 0 = disabled (default) # 1 = enabled hexdecodecontent = 0 # Force Quick Search rather than DFA search algorithm # The current DFA implementation is not totally 16-bit character compatible # but is used by default as it handles large phrase lists much faster. # If you wish to use a large number of 16-bit character phrases then # enable this option. # 0 = off (default) # 1 = on (Big5 compatible) forcequicksearch = 0 # Reverse lookups for banned site and URLs. # If set to on, DansGuardian will look up the forward DNS for an IP URL # address and search for both in the banned site and URL lists. This would # prevent a user from simply entering the IP for a banned address. # It will reduce searching speed somewhat so unless you have a local caching # DNS server, leave it off and use the Blanket IP Block option in the # bannedsitelist file instead. reverseaddresslookups = off # Reverse lookups for banned and exception IP lists. # If set to on, DansGuardian will look up the forward DNS for the IP # of the connecting computer. This means you can put in hostnames in # the exceptioniplist and bannediplist. # It will reduce searching speed somewhat so unless you have a local DNS server, # leave it off. reverseclientiplookups = off # Build bannedsitelist and bannedurllist cache files. # This will compare the date stamp of the list file with the date stamp of # the cache file and will recreate as needed. # If a bsl or bul .processed file exists, then that will be used instead. # It will increase process start speed by 300%. On slow computers this will # be significant. Fast computers do not need this option. on | off createlistcachefiles = on # POST protection (web upload and forms) # does not block forms without any file upload, i.e. this is just for # blocking or limiting uploads # measured in kibibytes after MIME encoding and header bumph # use 0 for a complete block # use higher (e.g. 512 = 512Kbytes) for limiting # use -1 for no blocking #maxuploadsize = 512 #maxuploadsize = 0 maxuploadsize = -1 # Max content filter page size # Sometimes web servers label binary files as text which can be very # large which causes a huge drain on memory and cpu resources. # To counter this, you can limit the size of the document to be # filtered and get it to just pass it straight through. # This setting also applies to content regular expression modification. # The size is in Kibibytes - eg 2048 = 2Mb # use 0 for no limit maxcontentfiltersize = # Username identification methods (used in logging) # You can have as many methods as you want and not just one. The first one # will be used then if no username is found, the next will be used. # * proxyauth is for when basic proxy authentication is used (no good for # transparent proxying). # * ntlm is for when the proxy supports the MS NTLM authentication # protocol. (Only works with IE5.5 sp1 and later). **NOT IMPLEMENTED** # * ident is for when the others don't work. It will contact the computer # that the connection came from and try to connect to an identd server # and query it for the user owner of the connection. usernameidmethodproxyauth = on usernameidmethodntlm = off # **NOT IMPLEMENTED** usernameidmethodident = off # Preemptive banning - this means that if you have proxy auth enabled and a user accesses # a site banned by URL for example they will be denied straight away without a request # for their user and pass. This has the effect of requiring the user to visit a clean # site first before it knows who they are and thus maybe an admin user. # This is how DansGuardian has always worked but in some situations it is less than # ideal. So you can optionally disable it. Default is on. # As a side effect disabling this makes AD image replacement work better as the mime # type is know. preemptivebanning = on # Misc settings # if on it adds an X-Forwarded-For: <clientip> to the HTTP request # header. This may help solve some problem sites that need to know the # source ip. on | off forwardedfor = on # if on it uses the X-Forwarded-For: <clientip> to determine the client # IP. This is for when you have squid between the clients and DansGuardian. # Warning - headers are easily spoofed. on | off usexforwardedfor = off # if on it logs some debug info regarding fork()ing and accept()ing which # can usually be ignored. These are logged by syslog. It is safe to leave # it on or off logconnectionhandlingerrors = on # Fork pool options # sets the maximum number of processes to sporn to handle the incomming # connections. Max value usually 250 depending on OS. # On large sites you might want to try 180. maxchildren = 180 # sets the minimum number of processes to sporn to handle the incomming connections. # On large sites you might want to try 32. minchildren = 32 # sets the minimum number of processes to be kept ready to handle connections. # On large sites you might want to try 8. minsparechildren = 8 # sets the minimum number of processes to sporn when it runs out # On large sites you might want to try 10. preforkchildren = 10 # sets the maximum number of processes to have doing nothing. # When this many are spare it will cull some of them. # On large sites you might want to try 64. maxsparechildren = 64 # sets the maximum age of a child process before it croaks it. # This is the number of connections they handle before exiting. # On large sites you might want to try 10000. maxagechildren = 5000 # Process options # (Change these only if you really know what you are doing). # These options allow you to run multiple instances of DansGuardian on a single machine. # Remember to edit the log file path above also if that is your intention. # IPC filename # # Defines IPC server directory and filename used to communicate with the log process. ipcfilename = '/tmp/.dguardianipc' # URL list IPC filename # # Defines URL list IPC server directory and filename used to communicate with the URL # cache process. urlipcfilename = '/tmp/.dguardianurlipc' # PID filename # # Defines process id directory and filename. #pidfilename = '/var/run/dansguardian.pid' # Disable daemoning # If enabled the process will not fork into the background. # It is not usually advantageous to do this. # on|off ( defaults to off ) nodaemon = off # Disable logging process # on|off ( defaults to off ) nologger = off # Daemon runas user and group # This is the user that DansGuardian runs as. Normally the user/group nobody. # Uncomment to use. Defaults to the user set at compile time. # daemonuser = 'nobody' # daemongroup = 'nobody' # Soft restart # When on this disables the forced killing off all processes in the process group. # This is not to be confused with the -g run time option - they are not related. # on|off ( defaults to off ) softrestart = off maxcontentramcachescansize = 2000 maxcontentfilecachescansize = 20000 downloadmanager = '/etc/dansguardian/downloadmanagers/default.conf' authplugin = '/etc/dansguardian/authplugins/proxy-basic.conf' Squid.conf http_port 3128 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? cache deny QUERY acl apache rep_header Server ^Apache #broken_vary_encoding allow apache access_log /squid/var/logs/access.log squid hosts_file /etc/hosts auth_param basic program /squid/libexec/ncsa_auth /squid/etc/userbasic.auth auth_param basic children 5 auth_param basic realm proxy auth_param basic credentialsttl 2 hours auth_param basic casesensitive off refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 acl NoAuthNec src <HIDDEN FOR SECURITY> acl BrkRm src <HIDDEN FOR SECURITY> acl Dials src <HIDDEN FOR SECURITY> acl Comps src <HIDDEN FOR SECURITY> acl whsws dstdom_regex -i .opensuse.org .novell.com .suse.com mirror.mcs.an1.gov mirrors.kernerl.org www.suse.de suse.mirrors.tds.net mirrros.usc.edu ftp.ale.org suse.cs.utah.edu mirrors.usc.edu mirror.usc.an1.gov linux.nssl.noaa.gov noaa.gov .kernel.org ftp.ale.org ftp.gwdg.de .medibuntu.org mirrors.xmission.com .canonical.com .ubuntu. acl opensites dstdom_regex -i .mbsbooks.com .bowker.com .usps.com .usps.gov .ups.com .fedex.com go.microsoft.com .microsoft.com .apple.com toolbar.msn.com .contacts.msn.com update.services.openoffice.org fms2.pointroll.speedera.net services.wmdrm.windowsmedia.com windowsupdate.com .adobe.com .symantec.com .vitalbook.com vxn1.datawire.net vxn.datawire.net download.lavasoft.de .download.lavasoft.com .lavasoft.com updates.ls-servers.com .canadapost. .myyellow.com minirick symantecliveupdate.com wm.overdrive.com www.overdrive.com productactivation.one.microsoft.com www.update.microsoft.com testdrive.whoson.com www.columbia.k12.mo.us banners.wunderground.com .kofax.com .gotomeeting.com tools.google.com .dl.google.com .cache.googlevideo.com .gpdl.google.com .clients.google.com cache.pack.google.com kh.google.com maps.google.com auth.keyhole.com .contacts.msn.com .hrblock.com .taxcut.com .merchantadvantage.com .jtv.com .malwarebytes.org www.google-analytics.com dcs.support.xerox.com .dhl.com .webtrendslive.com javadl-esd.sun.com javadl-alt.sun.com .excelsior.edu .dhlglobalmail.com .nessus.org .foxitsoftware.com foxit.vo.llnwd.net installshield.com .mindjet.com .mediascouter.com media.us.elsevierhealth.com .xplana.com .govtrack.us sa.tulsacc.edu .omniture.com fpdownload.macromedia.com webservices.amazon.com acl password proxy_auth REQUIRED acl all src all acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 563 631 2001 2005 8731 9001 9080 10000 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port # https, snews 443 563 acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port # unregistered ports 1936-65535 acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 10000 acl Safe_ports port 631 acl Safe_ports port 901 # SWAT acl purge method PURGE acl CONNECT method CONNECT acl UTubeUsers proxy_auth "/squid/etc/utubeusers.list" acl RestrictUTube dstdom_regex -i youtube.com acl RestrictFacebook dstdom_regex -i facebook.com acl FacebookUsers proxy_auth "/squid/etc/facebookusers.list" acl BuemerKEC src 10.10.128.0/24 acl MBSsortnet src 10.10.128.0/26 acl MSNExplorer browser -i MSN acl Printers src <HIDDEN FOR SECURITY> acl SpecialFolks src <HIDDEN FOR SECURITY> # streaming download acl fails rep_mime_type ^.*mms.* acl fails rep_mime_type ^.*ms-hdr.* acl fails rep_mime_type ^.*x-fcs.* acl fails rep_mime_type ^.*x-ms-asf.* acl fails2 urlpath_regex dvrplayer mediastream mms:// acl fails2 urlpath_regex \.asf$ \.afx$ \.flv$ \.swf$ acl deny_rep_mime_flashvideo rep_mime_type -i video/flv acl deny_rep_mime_shockwave rep_mime_type -i ^application/x-shockwave-flash$ acl x-type req_mime_type -i ^application/octet-stream$ acl x-type req_mime_type -i application/octet-stream acl x-type req_mime_type -i ^application/x-mplayer2$ acl x-type req_mime_type -i application/x-mplayer2 acl x-type req_mime_type -i ^application/x-oleobject$ acl x-type req_mime_type -i application/x-oleobject acl x-type req_mime_type -i application/x-pncmd acl x-type req_mime_type -i ^video/x-ms-asf$ acl x-type2 rep_mime_type -i ^application/octet-stream$ acl x-type2 rep_mime_type -i application/octet-stream acl x-type2 rep_mime_type -i ^application/x-mplayer2$ acl x-type2 rep_mime_type -i application/x-mplayer2 acl x-type2 rep_mime_type -i ^application/x-oleobject$ acl x-type2 rep_mime_type -i application/x-oleobject acl x-type2 rep_mime_type -i application/x-pncmd acl x-type2 rep_mime_type -i ^video/x-ms-asf$ acl RestrictHulu dstdom_regex -i hulu.com acl broken dstdomain cms.montgomerycollege.edu events.columbiamochamber.com members.columbiamochamber.com public.genexusserver.com acl RestrictVimeo dstdom_regex -i vimeo.com acl http_port port 80 #http_reply_access deny deny_rep_mime_flashvideo #http_reply_access deny deny_rep_mime_shockwave #streaming files #http_access deny fails #http_reply_access deny fails #http_access deny fails2 #http_reply_access deny fails2 #http_access deny x-type #http_reply_access deny x-type #http_access deny x-type2 #http_reply_access deny x-type2 follow_x_forwarded_for allow localhost acl_uses_indirect_client on log_uses_indirect_client on http_access allow manager localhost http_access deny manager http_access allow purge localhost http_access deny purge http_access allow SpecialFolks http_access deny CONNECT !SSL_ports http_access allow whsws http_access allow opensites http_access deny BuemerKEC !MBSsortnet http_access deny BrkRm RestrictUTube RestrictFacebook RestrictVimeo http_access allow RestrictUTube UTubeUsers http_access deny RestrictUTube http_access allow RestrictFacebook FacebookUsers http_access deny RestrictFacebook http_access deny RestrictHulu http_access allow NoAuthNec http_access allow BrkRm http_access allow FacebookUsers RestrictVimeo http_access deny RestrictVimeo http_access allow Comps http_access allow Dials http_access allow Printers http_access allow password http_access deny !Safe_ports http_access deny SSL_ports !CONNECT http_access allow http_port http_access deny all http_reply_access allow all icp_access allow all access_log /squid/var/logs/access.log squid visible_hostname proxy.site.com forwarded_for off coredump_dir /squid/cache/ #header_access Accept-Encoding deny broken #acl snmppublic snmp_community mysecretcommunity #snmp_port 3401 #snmp_access allow snmppublic all cache_mem 3 GB #acl snmppublic snmp_community mbssquid #snmp_port 3401 #snmp_access allow snmppublic all

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• Again WPA Connection problem even after changed to latest version ..please help

  - by Renjith G

  I am using hostapd, wireless tools with madwifi for my wireless ap in my board. The WEP, WPA-PSK connections and communications between my board with linux and my desktop PC, Windows XP SP2 (with Olitec USB wireless) are fine. But when I configured the WPA type, the connection seems established but shows the status "TKIP - Key Absent" in the security dialog box. Anyone faced this problem? Am attaching the conf files and the connection status. In the AP side am complaining . I am using the in built radius server conf with the hostapd 0.4.7 hostapd.conf interface=ath0 driver=madwifi logger_syslog=0 logger_syslog_level=0 logger_stdout=0 logger_stdout_level=0 debug=0 eapol_key_index_workaround=1 dump_file=/tmp/hostapd.dump.0.0 ssid=Renjith G wpa wpa=1 wpa_passphrase=mypassphrase wpa_key_mgmt=WPA-EAP wpa_pairwise=TKIP CCMP wpa_group_rekey=600 macaddr_acl=2 /* commented */ ieee8021x=1 /* commented */ eap_authenticator=1 own_ip_addr=172.16.25.1 nas_identifier=renjithg.com auth_server_addr=172.16.25.1 auth_server_port=1812 auth_server_shared_secret=key1 ca_cert=/flash1/ca.crt server_cert=/flash1/server.crt eap_user_file=/etc/hostapd.eap_user hostapd.eap_user "*@renjithg.com" TLS And the commands am using are wlanconfig ath0 create wlandev wifi0 wlanmode ap iwconfig ath0 essid Renjith channel 6 ifconfig ath0 192.168.25.1 netmask 255.255.255.0 up hostapd -ddd /etc/hostapd.conf Please correct if am wrong .. Also am getting the debug messages on my AP when am connecting in my windows machine through WPA ~/wlanexe # ./hostapd -ddd /etc/hostapd.conf Configuration file: /etc/hostapd.conf Line 18: obsolete eap_authenticator used; this has been renamed to eap_server madwifi_set_iface_flags: dev_up=0 Using interface ath0 with hwaddr 00:0b:6b:33:8c:30 and ssid 'Renjith G wpa' madwifi_set_ieee8021x: enabled=1 madwifi_configure_wpa: group key cipher=1 madwifi_configure_wpa: pairwise key ciphers=0xa madwifi_configure_wpa: key management algorithms=0x1 madwifi_configure_wpa: rsn capabilities=0x0 madwifi_configure_wpa: enable WPA= 0x1 madwifi_set_iface_flags: dev_up=1 madwifi_set_privacy: enabled=1 WPA: group state machine entering state GTK_INIT GMK - hexdump(len=32): 9c 77 cd 38 5a 60 3b 16 8a 22 90 e8 65 b3 c2 86 40 5c be c3 dd 84 3e df 58 1d 16 61 1d 13 d1 f2 GTK - hexdump(len=32): 02 78 d7 d3 5d 15 e3 89 9c 62 a8 fe 8a 0f 40 28 ba dc cd bc 07 f4 59 88 1c 08 84 2b 49 3d e2 32 WPA: group state machine entering state SETKEYSDONE madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=1 Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 Deauthenticate all stations l2_packet_receive - recvfrom: Network is down Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 Wireless event: cmd=0x8c04 len=20 madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state DISCONNECTED WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 < Register Fail < Register Fail Wireless event: cmd=0x8c04 len=20 madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state DISCONNECTED WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 NOW am getting the following error message with latest tools. *This is the latest error messages..please refer this only..* ~/wlanexe # ./hostapd -ddd /etc/hostapd.conf TLS: Trusted root certificate(s) loaded madwifi_set_iface_flags: dev_up=0 madwifi_set_privacy: enabled=0 BSS count 1, BSSID mask ff:ff:ff:ff:ff:ff (0 bits) Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 3) Could not connect to kernel driver. Deauthenticate all stations madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=2 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 2) madwifi_set_privacy: enabled=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=1 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=2 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=3 Using interface ath0 with hwaddr 00:0b:6b:33:8c:30 and ssid 'RenjithGwpa' SSID - hexdump_ascii(len=11): 52 65 6e 6a 69 74 68 47 77 70 61 RenjithGwpa PSK (ASCII passphrase) - hexdump_ascii(len=12): 6d 79 70 61 73 73 70 68 72 61 73 65 mypassphrase PSK (from passphrase) - hexdump(len=32): a6 55 3e 76 94 8b d9 81 a1 22 5e 24 29 83 33 86 11 a8 7e 93 19 7c a9 ab ab cc 12 58 37 e5 35 b6 RADIUS local address: 172.16.25.1:1024 madwifi_set_ieee8021x: enabled=1 madwifi_configure_wpa: group key cipher=1 madwifi_configure_wpa: pairwise key ciphers=0xa madwifi_configure_wpa: key management algorithms=0x1 madwifi_configure_wpa: rsn capabilities=0x0 madwifi_configure_wpa: enable WPA=0x1 WPA: group state machine entering state GTK_INIT (VLAN-ID 0) GMK - hexdump(len=32): [REMOVED] GTK - hexdump(len=32): [REMOVED] WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0) madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=1 madwifi_set_privacy: enabled=1 madwifi_set_iface_flags: dev_up=1 ath0: Setup of interface done. l2_packet_receive - recvfrom: Network is down Wireless event: cmd=0x8b1a len=24 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09 Wireless event: cmd=0x8c04 len=20 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09 Data frame from not associated STA 00:0a:78:a0:0b:09 Data frame from not associated STA 00:0a:78:a0:0b:09 Wireless event: cmd=0x8c04 len=20 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09

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• MySQL 5.1.49 freezing every two days

  - by maximus

  Hi all, our mysql system is "freezing" every two days. By "freezing" i mean the following: it doesn't respond to ping we can't login with SSH we don't get any answer from MySQL there is no entry in the error logs! neither from linux neither from MySQL. we have already changed to a completely new hardware, we have the same problem, so it's definitely not a hardware problem. we do not have any other software installed except a firewall (iptables rule) we can restart the server from another server using rsyslog (www.rsyslog.com)(software reset) Could someone help me, by giving me some pointers what could i do to figure out the problem? I have included every detail about our settings. Thank you in advance for your help. Max. Our system parameters and settings: System-Memory: 12GB Processor: Intel 7-920 Quadcore Operating system: Debian 5 (lenny) 64bit MySQL 5.1.49 Databases: (a) a small phpbb forum (b) a 6GB database 3 tables with about 15 million rows my.cnf # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp language = /usr/share/mysql/english skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = our-ip-address # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 256K thread_cache_size = 32 max_connections = 300 table_cache = 2048 #thread_concurrency = 4 # Used for InnoDB tables recommended to 50%-80% available memory innodb_buffer_pool_size = 6G # 20MB sometimes larger innodb_additional_mem_pool_size = 20M # 8M-16M is good for most situations innodb_log_buffer_size = 8M # Disable XA support because we do not use it innodb-support-xa = 0 # 1 is default wich is 100% secure but 2 offers better performance innodb_flush_log_at_trx_commit = 1 innodb_flush_method = O_DIRECT #innodb_thread_concurency = 8 # Recommended 64M - 512M depending on server size innodb_log_file_size = 512M # One file per table innodb_file_per_table # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 16M #query_cache_type = 1 #query_cache_min_res_unit= 2K #join_buffer_size = 1M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 # # Error logging goes to syslog. This is a Debian improvement :) # # Here you can see queries with especially long duration log_slow_queries = /var/log/mysql/mysql-slow.log long_query_time = 2 log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. #server-id = 1 log_bin = /var/log/mysql/mysql-bin.log # WARNING: Using expire_logs_days without bin_log crashes the server! See README.Debian! expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # * InnoDB plugin # As of MySQL 5.1.38, the InnoDB plugin from Oracle is included in the MySQL source code. # It has many improvements and better performances than the built-in InnoDB storage engine. # Please read http://www.innodb.com/products/innodb_plugin/ for more information. # Uncommenting the two following lines to use the InnoDB plugin. ignore_builtin_innodb plugin-load=innodb=ha_innodb_plugin.so # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * NDB Cluster # # See /usr/share/doc/mysql-server-*/README.Debian for more information. # # The following configuration is read by the NDB Data Nodes (ndbd processes) # not from the NDB Management Nodes (ndb_mgmd processes). # # [MYSQL_CLUSTER] # ndb-connectstring=127.0.0.1 # # * IMPORTANT: Additional settings that can override those from this file! # !includedir /etc/mysql/conf.d/ UPDATE After installing sysstat and configuring it to collect data after every minute i have the following datas. I used sar to generate the following output: The log-file is too big so coudn't enter it here but uploaded to box.net. The link is http://www.box.net/shared/xc6rh7qqob SECOND UPDATE We started a ping command in the background, and that solved the problem. Now the server does work since more then a week. We still don't know what's the problem.

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• Optimizing MySQL for small VPS

  - by Chris M

  I'm trying to optimize my MySQL config for a verrry small VPS. The VPS is also running NGINX/PHP-FPM and Magento; all with a limit of 250MB of RAM. This is an output of MySQL Tuner... -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.41-3ubuntu12.8 [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 1M (Tables: 14) [--] Data in InnoDB tables: 29M (Tables: 301) [--] Data in MEMORY tables: 1M (Tables: 17) [!!] Total fragmented tables: 301 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 2d 11h 14m 58s (1M q [8.038 qps], 33K conn, TX: 2B, RX: 618M) [--] Reads / Writes: 83% / 17% [--] Total buffers: 122.0M global + 8.6M per thread (100 max threads) [!!] Maximum possible memory usage: 978.2M (404% of installed RAM) [OK] Slow queries: 0% (37/1M) [OK] Highest usage of available connections: 6% (6/100) [OK] Key buffer size / total MyISAM indexes: 32.0M/282.0K [OK] Key buffer hit rate: 99.7% (358K cached / 1K reads) [OK] Query cache efficiency: 83.4% (1M cached / 1M selects) [!!] Query cache prunes per day: 48301 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 144K sorts) [OK] Temporary tables created on disk: 13% (27K on disk / 203K total) [OK] Thread cache hit rate: 99% (6 created / 33K connections) [!!] Table cache hit rate: 0% (32 open / 51K opened) [OK] Open file limit used: 1% (20/1K) [OK] Table locks acquired immediately: 99% (1M immediate / 1M locks) [!!] InnoDB data size / buffer pool: 29.2M/8.0M -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Reduce your overall MySQL memory footprint for system stability Enable the slow query log to troubleshoot bad queries Increase table_cache gradually to avoid file descriptor limits Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 64M) table_cache (> 32) innodb_buffer_pool_size (>= 29M) and this is the config. # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 32M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 sort_buffer_size = 4M read_buffer_size = 4M myisam_sort_buffer_size = 16M # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 100 table_cache = 32 tmp_table_size = 128M #thread_concurrency = 10 # # * Query Cache Configuration # #query_cache_limit = 1M query_cache_type = 1 query_cache_size = 64M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 log_error = /var/log/mysql/error.log # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ The site contains 1 wordpress site,so lots of MYISAM but mostly static content as its not changing all that often (A wordpress cache plugin deals with this). And the Magento Site which consists of a lot of InnoDB tables, some MyISAM and some INMEMORY. The "read" side seems to be running pretty well with a mass of optimizations I've used on Magento, the NGINX setup and PHP-FPM + XCACHE. I'd love to have a kick in the right direction with the MySQL config so I'm not blindly altering it based on the MySQLTuner without understanding what I'm changing. Thanks

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• Unable to find valid certification path to requested target while CAS authentication

  - by Dmitriy Sukharev

  I'm trying to configure CAS authentication. It requires both CAS and client application to use HTTPS protocol. Unfortunately we should use self-signed certificate (with CN that doesn't have anything in common with our server). Also the server is behind firewall and we have only two ports (ssh and https) visible. As far as there're several application that should be visible externally, we use Apache for ajp reverse proxying requests to these applications. Secure connections are managed by Apache, and all Tomcat are not configured to work with SSL. But I obtained exception while authentication, therefore desided to set keystore in CATALINA_OPTS: export CATALINA_OPTS="-Djavax.net.ssl.keyStore=/path/to/tomcat/ssl/cert.pfx -Djavax.net.ssl.keyStoreType=PKCS12 -Djavax.net.ssl.keyStorePassword=password -Djavax.net.ssl.keyAlias=alias -Djavax.net.debug=ssl" cert.pfx was obtained from certificate and key that are used by Apache HTTP Server: $ openssl pkcs12 -export -out /path/to/tomcat/ssl/cert.pfx -inkey /path/to/apache2/ssl/server-key.pem -in /path/to/apache2/ssl/server-cert.pem When I try to authenticate a user I obtain the following exception: Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:174) ~[na:1.6.0_32] at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:238) ~[na:1.6.0_32] at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:318) ~[na:1.6.0_32] Meanwhile I can see in catalina.out that Tomcat see certificate in cert.pfx and it's the same as the one that is used while authentication: 09:11:38.886 [http-bio-8080-exec-2] DEBUG o.j.c.c.v.Cas20ProxyTicketValidator - Constructing validation url: https://external-ip/cas/proxyValidate?pgtUrl=https%3A%2F%2Fexternal-ip%2Fclient%2Fj_spring_cas_security_proxyreceptor&ticket=ST-17-PN26WtdsZqNmpUBS59RC-cas&service=https%3A%2F%2Fexternal-ip%2Fclient%2Fj_spring_cas_security_check 09:11:38.886 [http-bio-8080-exec-2] DEBUG o.j.c.c.v.Cas20ProxyTicketValidator - Retrieving response from server. keyStore is : /path/to/tomcat/ssl/cert.pfx keyStore type is : PKCS12 keyStore provider is : init keystore init keymanager of type SunX509 *** found key for : 1 chain [0] = [ [ Version: V1 Subject: CN=wrong.domain.name, O=Our organization, L=Location, ST=State, C=Country Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5 Key: Sun RSA public key, 1024 bits modulus: 13??a lot of digits here??19 public exponent: ????7 Validity: [From: Tue Apr 24 16:32:18 CEST 2012, To: Wed Apr 24 16:32:18 CEST 2013] Issuer: CN=wrong.domain.name, O=Our organization, L=Location, ST=State, C=Country SerialNumber: [ d??????? ????????] ] Algorithm: [SHA1withRSA] Signature: 0000: 65 Signature is here 0070: 96 . ] *** trustStore is: /jdk-home-folder/jre/lib/security/cacerts Here is a lot of trusted CAs. Here is nothing related to our certicate or our (not trusted) CA. ... 09:11:39.731 [http-bio-8080-exec-4] DEBUG o.j.c.c.v.Cas20ProxyTicketValidator - Retrieving response from server. Allow unsafe renegotiation: false Allow legacy hello messages: true Is initial handshake: true Is secure renegotiation: false %% No cached client session *** ClientHello, TLSv1 RandomCookie: GMT: 1347433643 bytes = { 63, 239, 180, 32, 103, 140, 83, 7, 109, 149, 177, 80, 223, 79, 243, 244, 60, 191, 124, 139, 108, 5, 122, 238, 146, 1, 54, 218 } Session ID: {} Cipher Suites: [SSL_RSA_WITH_RC4_128_MD5, SSL_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_DSS_WITH_AES_128_CBC_SHA, SSL_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, SSL_RSA_WITH_DES_CBC_SHA, SSL_DHE_RSA_WITH_DES_CBC_SHA, SSL_DHE_DSS_WITH_DES_CBC_SHA, SSL_RSA_EXPORT_WITH_RC4_40_MD5, SSL_RSA_EXPORT_WITH_DES40_CBC_SHA, SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA, SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA, TLS_EMPTY_RENEGOTIATION_INFO_SCSV] Compression Methods: { 0 } *** http-bio-8080-exec-4, WRITE: TLSv1 Handshake, length = 75 http-bio-8080-exec-4, WRITE: SSLv2 client hello message, length = 101 http-bio-8080-exec-4, READ: TLSv1 Handshake, length = 81 *** ServerHello, TLSv1 RandomCookie: GMT: 1347433643 bytes = { 145, 237, 232, 63, 240, 104, 234, 201, 148, 235, 12, 222, 60, 75, 174, 0, 103, 38, 196, 181, 27, 226, 243, 61, 34, 7, 107, 72 } Session ID: {79, 202, 117, 79, 130, 216, 168, 38, 68, 29, 182, 82, 16, 25, 251, 66, 93, 108, 49, 133, 92, 108, 198, 23, 120, 120, 135, 151, 15, 13, 199, 87} Cipher Suite: SSL_RSA_WITH_RC4_128_SHA Compression Method: 0 Extension renegotiation_info, renegotiated_connection: <empty> *** %% Created: [Session-2, SSL_RSA_WITH_RC4_128_SHA] ** SSL_RSA_WITH_RC4_128_SHA http-bio-8080-exec-4, READ: TLSv1 Handshake, length = 609 *** Certificate chain chain [0] = [ [ Version: V1 Subject: CN=wrong.domain.name, O=Our organization, L=Location, ST=State, C=Country Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5 Key: Sun RSA public key, 1024 bits modulus: 13??a lot of digits here??19 public exponent: ????7 Validity: [From: Tue Apr 24 16:32:18 CEST 2012, To: Wed Apr 24 16:32:18 CEST 2013] Issuer: CN=wrong.domain.name, O=Our organization, L=Location, ST=State, C=Country SerialNumber: [ d??????? ????????] ] Algorithm: [SHA1withRSA] Signature: 0000: 65 Signature is here 0070: 96 . ] *** http-bio-8080-exec-4, SEND TLSv1 ALERT: fatal, description = certificate_unknown http-bio-8080-exec-4, WRITE: TLSv1 Alert, length = 2 http-bio-8080-exec-4, called closeSocket() http-bio-8080-exec-4, handling exception: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target I tried to convert our pem certificate to der format and imported it to trustedKeyStore (cacerts) (without private key), but it didn't change anything. But I'm not confident that I did it rigth. Also I must inform you that I don't know passphrase for our servier-key.pem file, and probably it differs from password for keystore created by me. OS: CentOS 6.2 Architecture: x64 Tomcat version: 7 Apache HTTP Server version: 2.4 Is there any way to make Tomcat accepts our certificate?

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