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• MySQL my.cnf file not being read, Ubuntu 10.04 64bit

  - by reallyordinary

  I've been researching this for a few hours with no luck. Basically it looks like my server's my.cnf file isn't being read at all. I've searched my server, and there's only one my.cnf file on it, located at /etc/mysql/my.cnf. Its ownership is root:root. I'm running Ubuntu 10.04 64bit on a Linode.com server. I have the latest versions of MySQL and PHP installed. I've edited the my.cnf file, commented out "skip-innodb", and have set innodb to be the default storage engine using default-storage-engine = innodb And then restarted mysql. But when I do show engines, MyISAM is still coming up as the default engine. Also - none of the innodb settings I've added to the my.cnf file are being read. For example, I have this in my.cnf: innodb_buffer_pool_size=4G But in phpmyadmin, InnoDB is showing as having a buffer pool size of 8,192 KiB. Similarly, I have this in the my.cnf: innodb_data-file_path = ibdata1:500M:autoextend But in phpmyadmin, it's reading as ibdata1:10M:autoextend. It doesn't look like MyISAM info is being read from the my.cnf file either. The my.cnf file has skip-external-locking queried out, but it's showing as "on" in phpmyadmin. So - yeah, it looks like nothing in the my.cnf file is being read at all. But the server still works. I'm running a Drupal site on it and it seems to operate fine. So mysql seems to be drawing default settings from... some mysterious secret location. Any idea how I can make mysql see and use this my.cnf file? Actually, wait - it looks like it may be being read, not sure. I checked the error.log and found this: 101128 4:28:52 [ERROR] Cannot find or open table databasename/cache_apachesolr from the internal data dictionary of InnoDB though the .frm file for the table exists. Maybe you have deleted and recreated InnoDB data files but have forgotten to delete the corresponding .frm files of InnoDB tables, or you have moved .frm files to another database? or, the table contains indexes that this version of the engine doesn't support. See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html how you can resolve the problem. InnoDB: Error: auto-extending data file ./ibdata1 is of a different size InnoDB: 640 pages (rounded down to MB) than specified in the .cnf file: InnoDB: initial 32000 pages, max 0 (relevant if non-zero) pages! InnoDB: Could not open or create data files. InnoDB: If you tried to add new data files, and it failed here, InnoDB: you should now edit innodb_data_file_path in my.cnf back InnoDB: to what it was, and remove the new ibdata files InnoDB created InnoDB: in this failed attempt. InnoDB only wrote those files full of InnoDB: zeros, but did not yet use them in any way. But be careful: do not InnoDB: remove old data files which contain your precious data! 101128 4:28:52 [ERROR] Plugin 'InnoDB' init function returned error. 101128 4:28:52 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 101128 4:28:52 [ERROR] /usr/sbin/mysqld: unknown variable 'innodb_lock_wait_timout=50' 101128 4:28:52 [ERROR] Aborting 101128 4:28:52 [Note] /usr/sbin/mysqld: Shutdown complete

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• How to configure DNS Server on Fedora

  - by user863873

  I want to learn how to configure my home PC server into a web server with domain and host. My IP is 109.99.141.133 and now points to a phpinfo page host on my home server. My registed domain is: anunta-anunturi.ro I searched for a tutorial and I've read that I have to configure /etc/named.conf and the file sources for the new zone that I create. So, from the tutorials, my /etc/named.conf looks like this: // // 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 { 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 { localhost; }; 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 "anunta-anunturi.ro" IN { type master; file "/etc/anunta-anunturi.db"; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; My /etc/anunta-anunturi.db file looks like this — I'm not sure if this is okay, or if it's the easy one. $TTL 86400 anunta-anunturi.ro. IN SOA serveur.anunta-anunturi.ro. root.serveur.anunta-anunturi.ro. ( 1997022700 ; Serial 28800 ; Refresh 14400 ; Retry 3600000 ; Expire 86400 ) ; Minumun IN NS serveur.anunta-anunturi.ro. IN MX 10 mail.anunta-anunturi.ro. serveur.anunta-anunturi.ro. IN A 192.168.1.37 www.anunta-anunturi.ro. IN A 192.168.1.37 mail.anunta-anunturi.ro. IN A 192.168.1.37 Extra info: At home I receive internet from my ISP through a router. My home PC and server recieve their IP automatically from the router when I start/restart. In my local home network, my server receives the IP 192.168.1.37 from the router. When I enter 109.99.141.133 in my browser, it points to the rooter that forwards port 80 to local IP 192.168.1.37 (my home server) Questions: Are my two files good? What/where is my nameserver that I need to copy/paste to my top level domain (where I registered my domain: rotld.ro)?

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• how to uninstall mariadb and re-install mysql ? Mysql install turns into mariadb install

  - by Suma

  I recently upgraded my centos system via the desktop. mistake! I had mariadb, phpmyadmin working just fine before - but after the upgrade they stopped. I frantically googled and tried to follow some tutorials about mariadb * mysql reinstall untill I came to this one: http://centosforge.com/node/how-replace-mysql-mariadb-centos-6-including-mysql-uninstall-instructions-and-yum-install I executed this command to remove all of mysql: yum remove mysql-server mysql-libs mysql-devel mysql* and then tried to reinstall mysql: as below - it crashes with errors as follows: ***************************************************************** [root@localhost ~]# yum install mysql-server mysql mysql-devel ***************************************************************** Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.serverspace.co.uk * extras: centos.serverspace.co.uk * rpmforge: www.mirrorservice.org * updates: mirror.rmg.io Setting up Install Process Package mysql-server is obsoleted by MariaDB-server, trying to install MariaDB-server-5.5.29-1.i686 instead Package mysql is obsoleted by MariaDB-server, trying to install MariaDB-server-5.5.29-1.i686 instead Package mysql-devel is obsoleted by MariaDB-devel, trying to install MariaDB-devel-5.5.29-1.i686 instead Resolving Dependencies --> Running transaction check ---> Package MariaDB-devel.i686 0:5.5.29-1 set to be updated --> Processing Dependency: MariaDB-common for package: MariaDB-devel ---> Package MariaDB-server.i686 0:5.5.29-1 set to be updated --> Processing Dependency: libssl.so.10 for package: MariaDB-server --> Processing Dependency: libcrypto.so.10 for package: MariaDB-server --> Running transaction check ---> Package MariaDB-common.i686 0:5.5.29-1 set to be updated --> Processing Dependency: MariaDB-compat for package: MariaDB-common ---> Package MariaDB-server.i686 0:5.5.29-1 set to be updated --> Processing Dependency: libssl.so.10 for package: MariaDB-server --> Processing Dependency: libcrypto.so.10 for package: MariaDB-server --> Running transaction check ---> Package MariaDB-compat.i686 0:5.5.29-1 set to be updated ---> Package MariaDB-server.i686 0:5.5.29-1 set to be updated --> Processing Dependency: libssl.so.10 for package: MariaDB-server --> Processing Dependency: libcrypto.so.10 for package: MariaDB-server --> Finished Dependency Resolution MariaDB-server-5.5.29-1.i686 from mariadb has depsolving problems --> Missing Dependency: libcrypto.so.10 is needed by package MariaDB-server-5.5.29-1.i686 (mariadb) MariaDB-server-5.5.29-1.i686 from mariadb has depsolving problems --> Missing Dependency: libssl.so.10 is needed by package MariaDB-server-5.5.29-1.i686 (mariadb) Error: Missing Dependency: libcrypto.so.10 is needed by package MariaDB-server-5.5.29-1.i686 (mariadb) Error: Missing Dependency: libssl.so.10 is needed by package MariaDB-server-5.5.29-1.i686 (mariadb) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest [root@localhost ~] If I now try to install libssl.10, i get asked to install glibc libraries. 2.17 and 2.7 - other discussions have said to stay clear of the as this will explode my system - I tried download 2.17 and it's huge - took ages to unzip. Could someone please help me to completelty remove maraidb and install mysql - so that I don't get the above errors and pushed over to mariadb when I run: yum install mysql-server mysql mysql-devel There are tons of material on how to install mariadb - but none i found so far that plainly explains how to go backwards to mysql.

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• nikto probe warning messages

  - by julio

  Hi-- I have a pretty standard VPS running Ubuntu 8.1, Apache 2.2, PHP 5 etc. -- standard Lamp stack. I am using suhosin and have tried my best to plug the obvious stuff, since I'm the only user-- there's no SSH access except via pubkey on a non-standard port, there's no root access by SSH, no FTP server running, iptables is set to discard anything outside of basically port 80 or my SSH port (there's no mail server or anything else). However, I've still been compromised (not badly as far as I can tell) probably by a SQL injection. I've locked down the SQL user (there's only one outside of root, and he's got limited priv, no file etc.) So I ran nikto to see what I'm doing wrong, and there's a list of things I've never seen, and can't find using "find" or any other method I'm aware of. See below: + /autologon.html?10514: Remotely Anywhere 5.10.415 is vulnerable to XSS attacks that can lead to cookie theft or privilege escalation. This is typically found on port 2000. + /servlet/webacc?User.html=noexist: Netware web access may reveal full path of the web server. Apply vendor patch or upgrade. + OSVDB-35878: /modules.php?name=Members_List&letter='%20OR%20pass%20LIKE%20'a%25'/*: PHP Nuke module allows user names and passwords to be viewed. + OSVDB-3092: /sitemap.xml: This gives a nice listing of the site content. + OSVDB-12184: /index.php?=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000: PHP reveals potentially sensitive information via certain HTTP requests which contain specific QUERY strings. + OSVDB-12184: /some.php?=PHPE9568F36-D428-11d2-A769-00AA001ACF42: PHP reveals potentially sensitive information via certain HTTP requests which contain specific QUERY strings. + OSVDB-12184: /some.php?=PHPE9568F34-D428-11d2-A769-00AA001ACF42: PHP reveals potentially sensitive information via certain HTTP requests which contain specific QUERY strings. + OSVDB-12184: /some.php?=PHPE9568F35-D428-11d2-A769-00AA001ACF42: PHP reveals potentially sensitive information via certain HTTP requests which contain specific QUERY strings. + OSVDB-3092: /administrator/: This might be interesting... + OSVDB-3092: /Agent/: This might be interesting... + OSVDB-3092: /includes/: This might be interesting... + OSVDB-3092: /logs/: This might be interesting... + OSVDB-3092: /tmp/: This might be interesting... + ERROR: /servlet/Counter returned an error: error reading HTTP response + OSVDB-3268: /icons/: Directory indexing is enabled: /icons + OSVDB-3268: /images/: Directory indexing is enabled: /images + OSVDB-3299: /forumscalendar.php?calbirthdays=1&action=getday&day=2001-8-15&comma=%22;echo%20'';%20echo%20%60id%20%60;die();echo%22: Vbulletin allows remote command execution. See link + OSVDB-3299: /forumzcalendar.php?calbirthdays=1&action=getday&day=2001-8-15&comma=%22;echo%20'';%20echo%20%60id%20%60;die();echo%22: Vbulletin allows remote command execution. See link + OSVDB-3299: /htforumcalendar.php?calbirthdays=1&action=getday&day=2001-8-15&comma=%22;echo%20'';%20echo%20%60id%20%60;die();echo%22: Vbulletin allows remote command execution. See link + OSVDB-3299: /vbcalendar.php?calbirthdays=1&action=getday&day=2001-8-15&comma=%22;echo%20'';%20echo%20%60id%20%60;die();echo%22: Vbulletin allows remote command execution. See link + OSVDB-3299: /vbulletincalendar.php?calbirthdays=1&action=getday&day=2001-8-15&comma=%22;echo%20'';%20echo%20%60id%20%60;die();echo%22: Vbulletin allows remote command execution. See link + OSVDB-6659: /kCKAowoWuZkKCUPH7Mr675ILd9hFg1lnyc1tWUuEbkYkFCpCdEnCKkkd9L0bY34tIf9l6t2owkUp9nI5PIDmQzMokDbp71QFTZGxdnZhTUIzxVrQhVgwmPYsMK7g34DURzeiy3nyd4ezX5NtUozTGqMkxDrLheQmx4dDYlRx0vKaX41JX40GEMf21TKWxHAZSUxjgXUnIlKav58GZQ5LNAwSAn13l0w<font%20size=50>DEFACED<!--//--: MyWebServer 1.0.2 is vulnerable to HTML injection. Upgrade to a later version. I understand about the trace and index, but what about the vbulletin and autologin? I've searched, and I can't find any files like that on the server. I have no idea about the "MyWebServer" stuff, the PHP Nuke, or the Netware/servlet stuff-- there's nothing really on the server except a pretty standard Joomla site (updated to the latest version). Any help with these messages and/or what I'm doing wrong is very much appreciated.

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• Nginx error page with JSON response

  - by Waseem

  I'm trying to serve a maintenance page to clients making request to my application when it is under maintenance. Following is my nginx configuration for that purpose. server { recursive_error_pages on; listen 80; ... if (-f $document_root/maintenance.html) { return 503; } error_page 404 /404.html; error_page 500 502 504 /500.html; error_page 503 @503; location = /404.html { root $document_root; } location = /500.html { root $document_root; } location @503 { error_page 405 =/maintenance.html; if (-f $request_filename) { break; } rewrite ^(.*)$ /maintenance.html break; } } Lets say I have enabled maintenance of my site by creating a $document_root/maintenance.html. This file, correctly, is served when a user makes a request with with Accept header of text/html. $ curl http://server.com/ -i -v -X GET -H "Accept: text/html" * Adding handle: conn: 0xf89420 * Adding handle: send: 0 * Adding handle: recv: 0 * Curl_addHandleToPipeline: length: 1 * - Conn 0 (0xf89420) send_pipe: 1, recv_pipe: 0 * About to connect() to server.com port 80 (#0) * Trying xxx.xxx.xxx.xxx... * Connected to server.com (xxx.xxx.xxx.xxx) port 80 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.33.0 > Host: server.com > Accept: text/html > < HTTP/1.1 503 Service Temporarily Unavailable HTTP/1.1 503 Service Temporarily Unavailable * Server nginx/1.1.19 is not blacklisted < Server: nginx/1.1.19 Server: nginx/1.1.19 < Date: Thu, 14 Nov 2013 11:16:16 GMT Date: Thu, 14 Nov 2013 11:16:16 GMT < Content-Type: text/html Content-Type: text/html < Content-Length: 27 Content-Length: 27 < Connection: keep-alive Connection: keep-alive < This is under maintenance. * Connection #0 to host server.com left intact Now some clients set Accept header to application/json. How do I send them a JSON response instead of maintenance.html? Following is the response that I get when setting Accept to application/json. $ curl http://server.com/ -i -v -X GET -H "Accept: application/json" * Adding handle: conn: 0x190c430 * Adding handle: send: 0 * Adding handle: recv: 0 * Curl_addHandleToPipeline: length: 1 * - Conn 0 (0x190c430) send_pipe: 1, recv_pipe: 0 * About to connect() to server.com port 80 (#0) * Trying xxx.xxx.xxx.xxx... * Connected to server.com (xxx.xxx.xxx.xxx) port 80 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.33.0 > Host: server.com > Accept: application/json > < HTTP/1.1 503 Service Temporarily Unavailable HTTP/1.1 503 Service Temporarily Unavailable * Server nginx/1.1.19 is not blacklisted < Server: nginx/1.1.19 Server: nginx/1.1.19 < Date: Thu, 14 Nov 2013 11:15:50 GMT Date: Thu, 14 Nov 2013 11:15:50 GMT < Content-Type: text/html Content-Type: text/html < Content-Length: 27 Content-Length: 27 < Connection: keep-alive Connection: keep-alive < This is under maintenance. * Connection #0 to host server.com left intact

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• A faulty Caviar Blue hard drive?

  - by Glister

  We have a small "homemade" server running fully updated Debian Wheezy (amd64). One hard drive installed: WDC WD6400AAKS. The motherboard is ASUS M4N68T V2. The usual load: CPU: an average of 20% Each week about 50GB of additional space is occupied. About 47GB of uploaded files and 3GB of MySQL data. I'm afraid that the hard drive may be about to fail. I saw Pre-fail on few places when I ran: root@SERVER:/tmp# smartctl -a /dev/sda smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-4-amd64] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Western Digital Caviar Blue Serial ATA Device Model: WDC WD6400AAKS-XXXXXXX Serial Number: WD-XXXXXXXXXXXXXXXXXXX LU WWN Device Id: 5 0014ee XXXXXXXXXXXXX Firmware Version: 01.03B01 User Capacity: 640,135,028,736 bytes [640 GB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Mon Oct 28 18:55:27 2013 UTC SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x85) Offline data collection activity was aborted by an interrupting command from host. Auto Offline Data Collection: Enabled. Self-test execution status: ( 247) Self-test routine in progress... 70% of test remaining. Total time to complete Offline data collection: (11580) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 136) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x303f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 157 146 021 Pre-fail Always - 5108 4 Start_Stop_Count 0x0032 098 098 000 Old_age Always - 2968 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 051 Old_age Always - 0 9 Power_On_Hours 0x0032 079 079 000 Old_age Always - 15445 10 Spin_Retry_Count 0x0032 100 100 051 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 051 Old_age Always - 0 12 Power_Cycle_Count 0x0032 098 098 000 Old_age Always - 2950 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 426 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 2968 194 Temperature_Celsius 0x0022 111 095 000 Old_age Always - 36 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 160 000 Old_age Always - 21716 200 Multi_Zone_Error_Rate 0x0008 200 200 051 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 15444 - Error SMART Read Selective Self-Test Log failed: scsi error aborted command Smartctl: SMART Selective Self Test Log Read Failed root@SERVER:/tmp# In one tutorial I read that the pre-fail is a an indication of coming failure, in another tutorial I read that it is not true. Can you guys help me decode the output of smartctl? It would be also nice to share suggestions what should I do if I want to ensure data integrity (about 50GB of new data each week, up to 2TB for the whole period I'm interested in). Maybe I will go with 2x2TB Caviar Black in RAID4?

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• Rails Passenger Nginx cannot load such file -- bundler

  - by Stuart

  I have set up Rails, Passenger, nginx, and PostgreSQL on Ubuntu Server 12.04LTS. Upon trying to access the application/website, however, I am greeted with an error page saying that the application could not be started because a source file is missing. Error message: cannot load such file -- bundler. My nginx config (/opt/nginx/conf/nginx.conf): user railsapp; worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; passenger_root /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14; passenger_ruby /home/railsapp/.rvm/rubies/ruby-1.9.3-p194/bin/ruby; server { listen 80; server_name fitness_schedules.local; root /home/railsapp/fitness_schedules/public; passenger_enabled on; rack_env development; } } Here is the error message: A source file that the application requires, is missing. It is possible that you didn't upload your application files correctly. Please check whether all your application files are uploaded. A required library may not installed. Please install all libraries that this application requires. Further information about the error may have been written to the application's log file. Please check it in order to analyse the problem. Error message: cannot load such file -- bundler Exception class: LoadError Application root: /home/railsapp/fitness_schedules Here is the backtrace from the webpage that is presented by nginx: Backtrace: # File Line Location 0 /home/railsapp/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb 36 in `require' 1 /home/railsapp/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb 36 in `require' 2 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/utils.rb 325 in `prepare_app_process' 3 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/rack/application_spawner.rb 156 in `block in initialize_server' 4 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/utils.rb 563 in `report_app_init_status' 5 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/rack/application_spawner.rb 154 in `initialize_server' 6 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 204 in `start_synchronously' 7 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 180 in `start' 8 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/rack/application_spawner.rb 129 in `start' 9 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 253 in `block (2 levels) in spawn_rack_application' 10 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server_collection.rb 132 in `lookup_or_add' 11 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 246 in `block in spawn_rack_application' 12 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server_collection.rb 82 in `block in synchronize' 13 prelude> 10:in `synchronize' 14 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server_collection.rb 79 in `synchronize' 15 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 244 in `spawn_rack_application' 16 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 137 in `spawn_application' 17 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 275 in `handle_spawn_application' 18 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 357 in `server_main_loop' 19 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 206 in `start_synchronously' 20 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/helper-scripts/passenger-spawn-server 99 in `' In ~/fitness_schedules/log there are only development and test logs, no production/development logs.

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• Pfsense 2.1 OpenVPN can't reach servers on the LAN

  - by Lucas Kauffman

  I have a small network set up like this: I have a Pfsense for connecting my servers to the WAN, they are using NAT from the LAN - WAN. I have an OpenVPN server using TAP to allow remote workers to be put on the same LAN network as the servers. They connect through the WAN IP to the OVPN interface. The LAN interface also servers as the gateway for the servers to get internet connection and has an IP of 10.25.255.254 The OVPN Interface and the LAN interface are bridged in BR0 Server A has an IP of 10.25.255.1 and is able to connect the internet Client A is connecting through the VPN and is assigned an IP address on its TAP interface of 10.25.24.1 (I reserved a /24 within the 10.25.0.0/16 for VPN clients) Firewall currently allows any-any connection OVPN towards LAN and vice versa Currently when I connect, all routes seem fine on the client side: Destination Gateway Genmask Flags Metric Ref Use Iface 300.300.300.300 0.0.0.0 255.255.255.0 U 0 0 0 eth0 10.25.0.0 10.25.255.254 255.255.0.0 UG 0 0 0 tap0 10.25.0.0 0.0.0.0 255.255.0.0 U 0 0 0 tap0 0.0.0.0 300.300.300.300 0.0.0.0 UG 0 0 0 eth0 I can ping the LAN interface: root@server:# ping 10.25.255.254 PING 10.25.255.254 (10.25.255.254) 56(84) bytes of data. 64 bytes from 10.25.255.254: icmp_req=1 ttl=64 time=7.65 ms 64 bytes from 10.25.255.254: icmp_req=2 ttl=64 time=7.49 ms 64 bytes from 10.25.255.254: icmp_req=3 ttl=64 time=7.69 ms 64 bytes from 10.25.255.254: icmp_req=4 ttl=64 time=7.31 ms 64 bytes from 10.25.255.254: icmp_req=5 ttl=64 time=7.52 ms 64 bytes from 10.25.255.254: icmp_req=6 ttl=64 time=7.42 ms But I can't ping past the LAN interface: root@server:# ping 10.25.255.1 PING 10.25.255.1 (10.25.255.1) 56(84) bytes of data. From 10.25.255.254: icmp_seq=1 Redirect Host(New nexthop: 10.25.255.1) From 10.25.255.254: icmp_seq=2 Redirect Host(New nexthop: 10.25.255.1) I ran a tcpdump on my em1 interface (LAN interface which has the IP of 10.25.255.254) tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on em1, link-type EN10MB (Ethernet), capture size 96 bytes 08:21:13.449222 IP 10.25.24.1 > 10.25.255.1: ICMP echo request, id 23623, seq 10, length 64 08:21:13.458211 ARP, Request who-has 10.25.255.1 tell 10.25.24.1, length 28 08:21:14.450541 IP 10.25.24.1 > 10.25.255.1: ICMP echo request, id 23623, seq 11, length 64 08:21:14.458431 ARP, Request who-has 10.25.255.1 tell 10.25.24.1, length 28 08:21:15.451794 IP 10.25.24.1 > 10.25.255.1: ICMP echo request, id 23623, seq 12, length 64 08:21:15.458530 ARP, Request who-has 10.25.255.1 tell 10.25.24.1, length 28 08:21:16.453203 IP 10.25.24.1 > 10.25.255.1: ICMP echo request, id 23623, seq 13, length 64 So traffic is reaching the LAN interface, but it's not getting passed it. But no answer from the 10.25.255.1 host. I'm not sure what I'm missing.

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• Upgrading PHP from 5.1 to 5.2 on CentOS 5.4

  - by andufo

  i'm trying to upgrade php 5.1 to 5.2 on a CentOS 5.4 I use: yum upgrade php The result is this (check out the last part): [root@mail httpd]# yum update php Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirror.raystedman.net * base: mirrors.serveraxis.net * centosplus: mirrors.tummy.com * contrib: mirror.raystedman.net * extras: mirror.raystedman.net * updates: mirrors.netdna.com Setting up Update Process Resolving Dependencies --> Running transaction check --> Processing Dependency: php = 5.1.6-27.el5 for package: php-devel --> Processing Dependency: php = 5.1.6 for package: php-eaccelerator ---> Package php.x86_64 0:5.2.10-1.el5.centos set to be updated --> Processing Dependency: php-cli = 5.2.10-1.el5.centos for package: php --> Processing Dependency: php-common = 5.2.10-1.el5.centos for package: php --> Running transaction check --> Processing Dependency: php = 5.1.6 for package: php-eaccelerator ---> Package php-cli.x86_64 0:5.2.10-1.el5.centos set to be updated --> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-xml --> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-pdo --> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-gd --> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-ldap --> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-mbstring --> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-mysql --> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-imap ---> Package php-common.x86_64 0:5.2.10-1.el5.centos set to be updated ---> Package php-devel.x86_64 0:5.2.10-1.el5.centos set to be updated --> Running transaction check --> Processing Dependency: php = 5.1.6 for package: php-eaccelerator ---> Package php-gd.x86_64 0:5.2.10-1.el5.centos set to be updated ---> Package php-imap.x86_64 0:5.2.10-1.el5.centos set to be updated ---> Package php-ldap.x86_64 0:5.2.10-1.el5.centos set to be updated ---> Package php-mbstring.x86_64 0:5.2.10-1.el5.centos set to be updated ---> Package php-mysql.x86_64 0:5.2.10-1.el5.centos set to be updated ---> Package php-pdo.x86_64 0:5.2.10-1.el5.centos set to be updated ---> Package php-xml.x86_64 0:5.2.10-1.el5.centos set to be updated --> Finished Dependency Resolution php-eaccelerator-5.1.6_0.9.5.2-4.el5.rf.x86_64 from installed has depsolving problems --> Missing Dependency: php = 5.1.6 is needed by package php-eaccelerator-5.1.6_0.9.5.2-4.el5.rf.x86_64 (installed) Error: Missing Dependency: php = 5.1.6 is needed by package php-eaccelerator-5.1.6_0.9.5.2-4.el5.rf.x86_64 (installed) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest The program package-cleanup is found in the yum-utils package. [root@mail httpd]# What are the consequences of using --skip-broken? Any recommendations?

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• Kernel panic when bringing up DRBD resource

  - by sc.

  I'm trying to set up two machines synchonizing with DRBD. The storage is setup as follows: PV - LVM - DRBD - CLVM - GFS2. DRBD is set up in dual primary mode. The first server is set up and running fine in primary mode. The drives on the first server have data on them. I've set up the second server and I'm trying to bring up the DRBD resources. I created all the base LVM's to match the first server. After initializing the resources with `` drbdadm create-md storage I'm bringing up the resources by issuing drbdadm up storage After issuing that command, I get a kernel panic and the server reboots in 30 seconds. Here's a screen capture. My configuration is as follows: OS: CentOS 6 uname -a Linux host.structuralcomponents.net 2.6.32-279.5.2.el6.x86_64 #1 SMP Fri Aug 24 01:07:11 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux rpm -qa | grep drbd kmod-drbd84-8.4.1-2.el6.elrepo.x86_64 drbd84-utils-8.4.1-2.el6.elrepo.x86_64 cat /etc/drbd.d/global_common.conf global { usage-count yes; # minor-count dialog-refresh disable-ip-verification } common { handlers { pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b /proc/sysrq-trigger ; reboot -f"; pri-lost-after-sb "/usr/lib/drbd/notify-pri-lost-after-sb.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b /proc/sysrq-trigger ; reboot -f"; local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drbd/notify-emergency-shutdown.sh; echo o /proc/sysrq-trigger ; halt -f"; # fence-peer "/usr/lib/drbd/crm-fence-peer.sh"; # split-brain "/usr/lib/drbd/notify-split-brain.sh root"; # out-of-sync "/usr/lib/drbd/notify-out-of-sync.sh root"; # before-resync-target "/usr/lib/drbd/snapshot-resync-target-lvm.sh -p 15 -- -c 16k"; # after-resync-target /usr/lib/drbd/unsnapshot-resync-target-lvm.sh; } startup { # wfc-timeout degr-wfc-timeout outdated-wfc-timeout wait-after-sb become-primary-on both; wfc-timeout 30; degr-wfc-timeout 10; outdated-wfc-timeout 10; } options { # cpu-mask on-no-data-accessible } disk { # size max-bio-bvecs on-io-error fencing disk-barrier disk-flushes # disk-drain md-flushes resync-rate resync-after al-extents # c-plan-ahead c-delay-target c-fill-target c-max-rate # c-min-rate disk-timeout } net { # protocol timeout max-epoch-size max-buffers unplug-watermark # connect-int ping-int sndbuf-size rcvbuf-size ko-count # allow-two-primaries cram-hmac-alg shared-secret after-sb-0pri # after-sb-1pri after-sb-2pri always-asbp rr-conflict # ping-timeout data-integrity-alg tcp-cork on-congestion # congestion-fill congestion-extents csums-alg verify-alg # use-rle protocol C; allow-two-primaries yes; after-sb-0pri discard-zero-changes; after-sb-1pri discard-secondary; after-sb-2pri disconnect; } } cat /etc/drbd.d/storage.res resource storage { device /dev/drbd0; meta-disk internal; on host.structuralcomponents.net { address 10.10.1.120:7788; disk /dev/vg_storage/lv_storage; } on host2.structuralcomponents.net { address 10.10.1.121:7788; disk /dev/vg_storage/lv_storage; } /var/log/messages is not logging anything about the crash. I've been trying to find a cause of this but I've come up with nothing. Can anyone help me out? Thanks.

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• How to serve static files for multiple Django projects via nginx to same domain

  - by thanley

  I am trying to setup my nginx conf so that I can serve the relevant files for my multiple Django projects. Ultimately I want each app to be available at www.example.com/app1, www.example.com/app2 etc. They all serve static files from a 'static-files' directory located in their respective project root. The project structure: Home Ubuntu Web www.example.com ref logs app app1 app1 static bower_components templatetags app1_project templates static-files app2 app2 static templates templatetags app2_project static-files app3 tests templates static-files static app3_project app3 venv When I use the conf below, there are no problems for serving the static-files for the app that I designate in the /static/ location. I can also access the different apps found at their locations. However, I cannot figure out how to serve all of the static files for all the apps at the same time. I have looked into using the 'try_files' command for the static location, but cannot figure out how to see if it is working or not. Nginx Conf - Only serving static files for one app: server { listen 80; server_name example.com; server_name www.example.com; access_log /home/ubuntu/web/www.example.com/logs/access.log; error_log /home/ubuntu/web/www.example.com/logs/error.log; root /home/ubuntu/web/www.example.com/; location /static/ { alias /home/ubuntu/web/www.example.com/app/app1/static-files/; } location /media/ { alias /home/ubuntu/web/www.example.com/media/; } location /app1/ { include uwsgi_params; uwsgi_param SCRIPT_NAME /app1; uwsgi_modifier1 30; uwsgi_pass unix:///home/ubuntu/web/www.example.com/app1.sock; } location /app2/ { include uwsgi_params; uwsgi_param SCRIPT_NAME /app2; uwsgi_modifier1 30; uwsgi_pass unix:///home/ubuntu/web/www.example.com/app2.sock; } location /app3/ { include uwsgi_params; uwsgi_param SCRIPT_NAME /app3; uwsgi_modifier1 30; uwsgi_pass unix:///home/ubuntu/web/www.example.com/app3.sock; } # what to serve if upstream is not available or crashes error_page 400 /static/400.html; error_page 403 /static/403.html; error_page 404 /static/404.html; error_page 500 502 503 504 /static/500.html; # Compression gzip on; gzip_http_version 1.0; gzip_comp_level 5; gzip_proxied any; gzip_min_length 1100; gzip_buffers 16 8k; gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript; # Some version of IE 6 don't handle compression well on some mime-types, # so just disable for them gzip_disable "MSIE [1-6].(?!.*SV1)"; # Set a vary header so downstream proxies don't send cached gzipped # content to IE6 gzip_vary on; } Essentially I want to have something like (I know this won't work) location /static/ { alias /home/ubuntu/web/www.example.com/app/app1/static-files/; alias /home/ubuntu/web/www.example.com/app/app2/static-files/; alias /home/ubuntu/web/www.example.com/app/app3/static-files/; } or (where it can serve the static files based on the uri) location /static/ { try_files $uri $uri/ =404; } So basically, if I use try_files like above, is the problem in my project directory structure? Or am I totally off base on this and I need to put each app in a subdomain instead of going this route? Thanks for any suggestions TLDR: I want to go to: www.example.com/APP_NAME_HERE And have nginx serve the static location: /home/ubuntu/web/www.example.com/app/APP_NAME_HERE/static-files/;

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• Vagrant (Virtualbox) host-only multiple node networking issue

  - by Lorin Hochstein

  I'm trying to use a multi-VM vagrant environment as a testbed for deploying OpenStack, and I've run into a networking problem with trying to communicate from one VM, to a VM-inside-of-a-VM. I have two Vagrant nodes, a cloud controller node and a compute node. I'm using host-only networking. My Vagrantfile looks like this: Vagrant::Config.run do |config| config.vm.box = "precise64" config.vm.define :controller do |controller_config| controller_config.vm.network :hostonly, "192.168.206.130" # eth1 controller_config.vm.network :hostonly, "192.168.100.130" # eth2 controller_config.vm.host_name = "controller" end config.vm.define :compute1 do |compute1_config| compute1_config.vm.network :hostonly, "192.168.206.131" # eth1 compute1_config.vm.network :hostonly, "192.168.100.131" # eth2 compute1_config.vm.host_name = "compute1" compute1_config.vm.customize ["modifyvm", :id, "--memory", 1024] end end When I try to start up a (QEMU-based) VM, it boots successfully on compute1, and its virtual nic (vnet0) is connected via a bridge, br100: root@compute1:~# brctl show 100 bridge name bridge id STP enabled interfaces br100 8000.08002798c6ef no eth2 vnet0 When the QEMU VM makes a request to the DHCP server (dnsmasq) running on controller, I can see the request reaches the controller because of the output on the syslog on the controller: Aug 6 02:34:56 precise64 dnsmasq-dhcp[12042]: DHCPDISCOVER(br100) fa:16:3e:07:98:11 Aug 6 02:34:56 precise64 dnsmasq-dhcp[12042]: DHCPOFFER(br100) 192.168.100.2 fa:16:3e:07:98:11 However, the DHCPOFFER never makes it back to the VM running on compute1. If I watch the requests using tcpdump on the vboxnet3 interface on my host machine that runs Vagrant (Mac OS X), I can see both the requests and the replies $ sudo tcpdump -i vboxnet3 -n port 67 or port 68 tcpdump: WARNING: vboxnet3: That device doesn't support promiscuous mode (BIOCPROMISC: Operation not supported on socket) tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on vboxnet3, link-type EN10MB (Ethernet), capture size 65535 bytes 22:51:20.694040 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 22:51:20.694057 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 22:51:20.696047 IP 192.168.100.1.67 > 192.168.100.2.68: BOOTP/DHCP, Reply, length 311 22:51:23.700845 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 22:51:23.700876 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 22:51:23.701591 IP 192.168.100.1.67 > 192.168.100.2.68: BOOTP/DHCP, Reply, length 311 22:51:26.705978 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 22:51:26.705995 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 22:51:26.706527 IP 192.168.100.1.67 > 192.168.100.2.68: BOOTP/DHCP, Reply, length 311 But, if I tcpdump on eth2 on compute, I only see the requests, not the replies: root@compute1:~# tcpdump -i eth2 -n port 67 or port 68 tcpdump: WARNING: eth2: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth2, link-type EN10MB (Ethernet), capture size 65535 bytes 02:51:20.240672 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 02:51:23.249758 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 02:51:26.258281 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:07:98:11, length 280 At this point, I'm stuck. I'm not sure why the DHCP replies aren't making it to the compute node. Perhaps it has something to do with the configuration of the VirtualBox virtual switch/router? Note that eth2 interfaces on both nodes have been set to promiscuous mode.

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• Setting up a DNS name server for a mass virtual host with Bind9

  - by Dez

  I am trying to set up a chrooted DNS name server in a local LAN like this everyone connected in the LAN can have access to the mass virtual hosts defined for a development ambience without having to edit manually their local /etc/hosts one by one. The mass virtual host is named example.user.dev (VirtualDocumentRoot /home/user/example ) and example.test (DocumentRoot /var/www/example). I set up everything and the /var/log/syslog doesn't show any error, but when checking the DNS with: host -v example.test Doesn't find the host. Also using the dig command I don't receive answer. dig -x example.test ; << DiG 9.5.1-P3 << -x imprimere ;; global options: printcmd ;; Got answer: ;; -HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 47844 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;imprimere.in-addr.arpa. IN PTR ;; AUTHORITY SECTION: in-addr.arpa. 600 IN SOA a.root-servers.net. dns-ops.arin.net. 2010042604 1800 900 691200 10800 ;; Query time: 108 msec ;; SERVER: 80.58.0.33#53(80.58.0.33) ;; WHEN: Mon Apr 26 11:15:53 2010 ;; MSG SIZE rcvd: 107 My configuration is the following: /etc/bind/named.conf.local zone "example.test" { type master; allow-query { any; }; file "/etc/bind/zones/master_example.test"; notify yes; }; zone "1.168.192.in-addr.arpa" { type master; allow-query { any; }; file "/etc/bind/zones/master_1.168.192.in-addr.arpa"; notify yes; }; /etc/bind/named.conf.options Note: We have an static IP address so I forward the querys to DNS server to said IP address. options{ directory "/var/cache/bind"; forwarders { 80.34.100.160; }; auth-nxdomain no; listen-on-v6 { any; }; }; /etc/bind/zones/master_example.test $ORIGIN example.test. $TTL 86400 @ IN SOA example.test. root.example.test. ( 201004227 ; serial 28800 ; refresh 14400 ; retry 3600000 ; expire 86400 ) ; min ; TXT "example.test, DNS service" @ IN NS example.test. localhost A 127.0.0.1 example.test. A 192.168.1.52 example A 192.168.1.52 www CNAME example.test. /etc/hosts 127.0.0.1 localhost example 192.168.1.52 localhost example example.test /etc/resolv.conf Note: For Bind I just added the 3 last lines. nameserver 80.58.0.33 nameserver 80.58.61.250 nameserver 80.58.61.254 search example.test search example nameserver 192.168.1.52

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• mysql replication 1x master, 1x slave

  - by clarkk

  I have just setup one master and one slave server, but its not working.. On my website I connect to the slave server and I insert some rows, but they do not appear on the master and vice versa.. What is wrong? This is what I did: Master: -> /etc/mysql/my.cnf [mysqld] log-bin = mysql-master-bin server-id=1 # bind-address = 127.0.0.1 binlog-do-db = test_db Slave: -> /etc/mysql/my.cnf [mysqld] log-bin = mysql-slave-bin server-id=2 # bind-address = 127.0.0.1 replicate-do-db = test_db Slave: terminal 0 > mysql> STOP SLAVE; // and drop tables Master: terminal 1 > mysql> CREATE USER 'repl_slave'@'slave_ip' IDENTIFIED BY 'repl_pass'; mysql> GRANT REPLICATION SLAVE ON *.* TO 'repl_slave'@'slave_ip'; mysql> FLUSH PRIVILEGES; mysql> FLUSH TABLES WITH READ LOCK; -- leave terminal open terminal 2 > shell> mysqldump -u root -pPASSWORD test_db --lock-all-tables > dump.sql mysql> SHOW MASTER STATUS; Slave: terminal 3 > shell> mysql -u root -pPASSWORD test_db < dump.sql terminal 0 > mysql> CHANGE MASTER TO mysql> MASTER_HOST='master_ip', mysql> MASTER_USER='repl_slave', mysql> MASTER_PASSWORD='repl_pass', mysql> MASTER_PORT=3306, mysql> MASTER_LOG_FILE='mysql-master-bin.000003', // terminal 2 > SHOW MASTER STATUS mysql> MASTER_LOG_POS=4, // terminal 2 > SHOW MASTER STATUS mysql> MASTER_CONNECT_RETRY=10; mysql> START SLAVE; mysql> SHOW SLAVE STATUS; Here is the slave status: Array ( [Slave_IO_State] => Waiting for master to send event [Master_Host] => xx.xx.xx.xx [Master_User] => repl_slave [Master_Port] => 3306 [Connect_Retry] => 10 [Master_Log_File] => mysql-master-bin.000003 [Read_Master_Log_Pos] => 106 [Relay_Log_File] => mysqld-relay-bin.000002 [Relay_Log_Pos] => 258 [Relay_Master_Log_File] => mysql-master-bin.000003 [Slave_IO_Running] => Yes [Slave_SQL_Running] => Yes [Replicate_Do_DB] => test_db [Replicate_Ignore_DB] => [Replicate_Do_Table] => [Replicate_Ignore_Table] => [Replicate_Wild_Do_Table] => [Replicate_Wild_Ignore_Table] => [Last_Errno] => 0 [Last_Error] => [Skip_Counter] => 0 [Exec_Master_Log_Pos] => 106 [Relay_Log_Space] => 414 [Until_Condition] => None [Until_Log_File] => [Until_Log_Pos] => 0 [Master_SSL_Allowed] => No [Master_SSL_CA_File] => [Master_SSL_CA_Path] => [Master_SSL_Cert] => [Master_SSL_Cipher] => [Master_SSL_Key] => [Seconds_Behind_Master] => 0 [Master_SSL_Verify_Server_Cert] => No [Last_IO_Errno] => 0 [Last_IO_Error] => [Last_SQL_Errno] => 0 [Last_SQL_Error] => )

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• How to restore Linode to Vagrant VM?

  - by Iain Elder

  I'm trying to set up a Linux development environment so I can safely make changes to my website without breaking the live site. Linode hosts my live site. A simple solution would be to host my development server on Linode as well, but I want to avoid doubling my hosting costs. The cheapest way I see is to use Vagrant on my Windows workstation to host my development environment. After I attempt to restore the backup to Vagrant and reboot the VM, I can no longer ssh into the Vagrant host. It's probably because by restoring the backup I overwrite some special Vagrant configuration, but I'm not sure how to avoid that. How do I make this approach work? If my approach is fundamentally wrong, can you suggest an alternative? Creating the backup On the Linode I used these commands to create a compressed copy of the entire filesystem, while ignoring things that shouldn't be included in the backup: $ sudo rsync -ahvz --exclude={/dev/*,/proc/*,/sys/*,/tmp/*,/run/*,/mnt/*,/backup/*} /* /backup/2 $ sudo tar -czf /backup/2.gz /backup/2 The backup file is called 2.gz because this is thesecond backup. The first backup is called 1.gz. I use WinSCP to copy the backup file to my Windows workstation. Setting up the Vagrant host I need a Vagrant box that matches my Linode operating system (Ubuntu 12.04.3 LTS, kernel 3.9.3). I selected the closet match from vagrantbox.es: Ubuntu Server Precise 12.04.3 amd64 Kernel is ready for Docker (Docker not included) On my workstation I ran these commands to add the box and initialize and boot an instance: $ vagrant box add ubuntu-precise http://nitron-vagrant.s3-website-us-east-1.amazonaws.com/vagrant_ubuntu_12.04.3_amd64_virtualbox.box $ mkdir linode-test $ cd linode-test $ vagrant init ubuntu-precise $ vagrant up Now Vagrant is running a machine with SSH on port 2222. The operating system version is the same. The kernel version is 3.8.0. Sounds close enough. Restoring the backup With WinSCP I copied the backup file 2.gz to /home/vagrant/2.gz on the Vagrant box. With PuTTY I connected via ssh to my new Vagrant box: On the box move the backup to the filesystem root. $ sudo mv 2.gz / Extract the archive to the filesystem root: $ sudo tar -xvpz -f 2.gz -C / --strip-components=2 (I discovered I need to use strip components because all files in the archive have the prefix backup/2/. I'll fix this for the next backup.) After the tar command completes, I log out of the box. Testing the backup When I try to log in again, it doesn't let me log in as vagrant with a password any more. It does let me log in as iain, my user on the live Linode, with a password. That surprised me because I disabled password authentication on my live Linode. I figured that I have to restart the ssh service for the change to take effect. Instead of restarting just ssh, I chose to restart the whole system. Now I can't even get to the login screen. PuTTY says "connection refused" when I try to connect. What went wrong?

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• Fix overscan in Linux with Intel graphics Vizio HDTV

  - by Padenton

  I am connecting my server to my HDTV so that I can conveniently display it there. My VIZIO HDTV cuts off all 4 edges. I already realize it is not optimal to be running a GUI on a server; this server will not have much external traffic so I prefer it for convenience. I have already spent countless hours searching for a fix, but all I could find required an ATI or NVIDIA graphics card, or didn’t work. In Windows, the Intel driver has a setting for underscan, though it seems only to be available by a glitch. Here’s my specs: Ubuntu Linux (Quantal 12.10) (Likely to switch to Arch) This is a home server computer, with KDE for managing(for now, at least) Graphics: Intel HD Graphics 4000 from Ivy Bridge Motherboard: ASRock Z77 Extreme4 CPU: Intel Core i5-3450 My monitors: Dell LCD monitor Vizio VX37L_HDTV10A 37" on HDMI input I have tried all of the following from both HDMI?HDMI and DVI?HDMI cables connected to the ports on my motherboard: Setting properties in xrandr Making sure drivers are all up to date Trying several different modes The TV was “cheap”; max resolution 1080i. I am able to get a 1920x1080 modeline, in both GNU/Linux and Windows, without difficulty. There is no setting in the menu to fix the overscan (I have tried all of them, I realize it’s not always called overscan). I have been in the service menu for the TV, which still does not contain an option to fix it. No aspect ratio settings, etc. The TV has a VGA connector but I am unsure if it would fix it, as I don’t have a VGA cable long enough, and am not sure it would get me the 1920x1080 resolution which I want. Using another resolution does not fix the problem. I tried custom modelines with the dimensions of my screen’s viewable area, but it wouldn’t let me use them. Ubuntu apparently doesn’t automatically generate an xorg.conf file for use. I read somewhere that modifying it may help solve it. I tried X -configure several times(with reboots, etc.) but it consistently gave the following error messages: In log file: … (WW) Falling back to old probe method for vesa Number of created screens does not match number of detected devices. Configuration failed. In output: … (++) Using config file: "/root/xorg.conf.new" (==) Using system config directory "/usr/share/X11/xorg.conf.d" Number of created screens does not match number of detected devices. Configuration failed. Server terminated with error (2). Closing log file. Tried using 'overscan' prop in xrandr: root@xxx:/home/xxx# xrandr --output HDMI1 --set overscan off X Error of failed request: BadName (named color or font does not exist) Major opcode of failed request: 140 (RANDR) Minor opcode of failed request: 11 (RRQueryOutputProperty) Serial number of failed request: 42 Current serial number in output stream: 42 'overscan on', 'underscan off', 'underscan on' were all also tried. Originally tried with Ubuntu 12.04, but failed and so updated to 12.10 when it was released. All software is up to date. I am not opposed to reinstalling my OS, likely will anyways (my preference being Arch).

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• multi-user rvm gem install failure when called from CloudFormation::Init

  - by Peter Mounce

  I've taken an Amazon Linux AMI (based on CentOS) and installed RVM (1.10.3) to it in multi-user fashion (see {1} below). I used that to install ruby 1.9.3-p125, rubygems 1.8.17, and bundler 1.1 as the baseline requirements for most things I'm going to be using the instances for. I've captured that instance to an AMI, and am now launching it via CloudFormation, with some CloudFormation::Init commands. One of them is to use s3cmd to pull down a private gem from S3, and the next one, the one that fails, is to install that gem. It fails with an error message 2012-03-15 16:53:20,201 [ERROR] Command 20_install_gems (/usr/local/rvm/rubies/ruby-1.9.3-p125/bin/gem install ./*.gem) failed 2012-03-15 16:53:20,202 [DEBUG] Command 20_install_gems output: /usr/local/rvm/rubies/ruby-1.9.3-p125/bin/gem:12:in `require': no such file to load -- rubygems (LoadError) from /usr/local/rvm/rubies/ruby-1.9.3-p125/bin/gem:12 Now, that happens during the cfn-init execution - I assume, but haven't checked yet, that cfn-init is being run with an environment different from that of ec2-user (there are no other users on the instance). If I run gem install mygem.gem in an interactive session then that works fine. So, my question really, is what should I do to make this work for cfn-init? Have I correctly set up rvm as multi-user? I've confirmed that cfn-init is being run as the root user, with his restricted environment. How should I source the /etc/profile.d/rvm.sh into root's sessions? {1} My semi-automated rvm installation steps (run in interactive session as ec2-user): sudo bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer ) sudo gpasswd -a ec2-user rvm # iconv-devel is baked into centos' glibc sudo yum install -y autoconf automake bison bzip2 gcc-c++ git libffi-devel libtool libxml2-devel libxslt-devel libyaml-devel make openssl-devel patch readline readline-devel zlib zlib-devel source /etc/profile.d/rvm.sh rvm list known # in a new session: rvm install ruby-1.9.3-p125 rvm use 1.9.3 --default gem update --system # gems required by public_web-awareness gem install aws-sdk bundler cocaine sinatra echo -e "gem: --no-ri --no-rdoc\n" > /home/ec2-user/.gemrc # delete unnecessary documentation files rm -rf `gem env gemdir`/doc sudo -s sudo echo -e "gem: --no-ri --no-rdoc\n" > /etc/skel/.gemrc sudo echo -e "gem: --no-ri --no-rdoc\n" > /etc/gemrc # ctrl + d out of the sudo session Some environment information: [ec2-user@ip ~]$ echo $PATH /usr/local/rvm/gems/ruby-1.9.3-p125/bin:/usr/local/rvm/gems/ruby-1.9.3-p125@global/bin:/usr/local/rvm/rubies/ruby-1.9.3-p125/bin:/usr/local/rvm/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/aws/bin:/home/ec2-user/bin [ec2-user@ip ~]$ echo $GEM_HOME /usr/local/rvm/gems/ruby-1.9.3-p125 [ec2-user@ip ~]$ echo $GEM_PATH /usr/local/rvm/gems/ruby-1.9.3-p125:/usr/local/rvm/gems/ruby-1.9.3-p125@global [ec2-user@ip ~]$ echo $BUNDLE_PATH [ec2-user@ip ~]$ gem list *** LOCAL GEMS *** aws-sdk (1.3.6) bundler (1.1.0) cocaine (0.2.1) httparty (0.8.1) json (1.6.5) multi_json (1.1.0) multi_xml (0.4.1) nokogiri (1.5.1, 1.5.0) rack (1.4.1) rack-protection (1.2.0) rake (0.9.2) sinatra (1.3.2) tilt (1.3.3) uuidtools (2.1.2) yamler (0.1.0)

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• Dual head setup for Ubuntu 10.04.1 and Windows XP Pro with same hardware configuration

  - by mejpark

  I have a Dell OptiPlex 360 workstation at work, with 2 x ATI RV280 [Radeon 9200 PRO] graphics cards installed, which are attached to two identical 19" HII flat panel monitors. I'm using the open source Radeon driver with Ubuntu, and the proprietary drivers with Windows. The good news is that dual head configuration works for both OSes. The bad news is, I have to use a different hardware configuration for each OS to achieve this. Hardware config #1: Dual monitors work for Windows XP Pro like this: First display -> external VGA port Second display -> DVI input on gfx card Hardware config #2: Dual monitors work for Ubuntu 10.04.1 like this: First display -> VGA port on gfx card Second display -> DVI input on gfx card I connected up the displays according to Config #2 and booted up Windows, which resulted in a mirror image on both screens. I was unable to login, as the login box was not visible. I unplugged the VGA lead from gfx card and plugged it into the external VGA port (Config #1) - Windows dual head works again, but the VGA-connected screen is not recognised by Ubuntu and remains in standby mode. Is it possible to configure a dual head setup for Ubuntu using Config #1, or am I missing something? I tried setting up dual monitors using Config #1, this morning which didn't work. By default, there is no xorg.conf file in Ubuntu 10.04.1, so I generated one using: $ sudo X :2 -configure X.Org X Server 1.7.6 Release Date: 2010-03-17 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-27-server i686 Ubuntu Current Operating System: Linux harrier 2.6.32-24-generic #42-Ubuntu SMP Fri Aug 20 14:24:04 UTC 2010 i686 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=a34c1931-98d4-4a34-880c-c227a2936c4a ro quiet splash Build Date: 21 July 2010 12:47:34PM xorg-server 2:1.7.6-2ubuntu7.3 (For technical support please see http://www.ubuntu.com/support) Current version of pixman: 0.16.4 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.2.log", Time: Mon Sep 13 10:02:02 2010 List of video drivers: apm ark intel mach64 s3virge trident mga tseng ati nouveau neomagic i740 openchrome voodoo s3 i128 radeon siliconmotion nv ztv vmware v4l chips rendition savage sisusb tdfx geode sis r128 cirrus fbdev vesa (++) Using config file: "/home/michael/xorg.conf.new" (==) Using config directory: "/usr/lib/X11/xorg.conf.d" (II) [KMS] No DRICreatePCIBusID symbol, no kernel modesetting. Xorg detected your mouse at device /dev/input/mice. Please check your config if the mouse is still not operational, as by default Xorg tries to autodetect the protocol. Xorg has configured a multihead system, please check your config. Your xorg.conf file is /home/michael/xorg.conf.new To test the server, run 'X -config /home/michael/xorg.conf.new' ddxSigGiveUp: Closing log $ sudo X -config /home/michael/xorg.conf.new Fatal server error: Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again. Please consult the The X.Org Foundation support at http://wiki.x.org for help. ddxSigGiveUp: Closing log I then booted Ubuntu in failsafe mode, dropped into root shell, and executed $ X -config /home/michael/xorg.conf.new again. The screen went blank and turned off, so

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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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• what's wrong with my Ubuntu 11.10 bind9 configuration?

  - by John Bowlinger

  I've followed several tutorials on installing your own nameservers and I'm pretty much at my wit's end, because I cannot get them to resolve. Note, the actual domain and ip address has been changed for privacy to example.com and 192.168.0.1. My named.conf.local file: zone "example.com" { type master; file "/var/cache/bind/example.com.db"; }; zone "0.168.192.in_addr.arpa" { type master; file "/var/cache/bind/192.168.0.db"; }; My named.conf.options file: options { forwarders { 192.168.0.1; }; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; }; My resolv.conf file: search example.com. nameserver 192.168.0.1 My Forward DNS file: ORIGIN example.com. $TTL 86400 @ IN SOA ns1.example.com. root.example.com. ( 2012083101 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 3600 ) ; Negative Cache TTL example.com. NS ns1.example.com. example.com. NS ns2.example.com. example.com. MX 10 mail.example.com. @ IN A 192.168.0.1 ns1.example.com IN A 192.168.0.1 ns2.example.com IN A 192.168.0.2 mail IN A 192.168.0.1 server1 IN A 192.168.0.1 gateway IN CNAME ns1.example.com. headoffice IN CNAME server1.example.com. smtp IN CNAME mail.example.com. pop IN CNAME mail.example.com. imap IN CNAME mail.example.com. www IN CNAME server1.example.com. sql IN CNAME server1.example.com. And my reverse DNS: $ORIGIN 0.168.192.in-addr.arpa. $TTL 86400 @ IN SOA ns1.example.com. root.example.com. ( 2009013101 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 3600 ) ; Negative Cache TTL 1 PTR mail.example.com. 1 PTR server1.example.com. 2 PTR ns1.example.com. Yet, when I restart bind9 and do: host ns1.example.com localhost I get: Using domain server: Name: localhost Address: 127.0.0.1#53 Aliases: Host ns1.example.com.example.com not found: 2(SERVFAIL) Similarly, for: host 192.168.0.1 localhost I get: ;; connection timed out; no servers could be reached Anybody know what's going on? Btw, my domain name "www.example.com" that I've used in this question is being forwarded to my ISP's nameservers. Would that affect my bind9 configuration? I want to learn how to do set up nameservers on my own for learning, so that is why I'm going through all this trouble.

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• Routing not working correctly using the laravel framework

  - by samayres1992

  I'm using the book wrote by one of the guys that created laravel, so I'd like to think for the most part this code isn't horribly wrong. My server is setup with nginx serving all static files and apache2 serving php. My config for each are the following: apache2: <VirtualHost *> # Host that will serve this project. ServerName litl.it # The location of our projects public directory. DocumentRoot /var/www/litl.it/laravel/public # Useful logs for debug. CustomLog /var/log/apache.access.log common ErrorLog /var/log/apache.error.log # Rewrites for pretty URLs, better not to rely on .htaccess. <Directory /var/www/litl.it/laravel/public> <IfModule mod_rewrite.c> Options -MultiViews RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^ index.php [L] </IfModule> </Directory> nginx: server { # Port that the web server will listen on. listen 80; # Host that will serve this project. server_name litl.it *.litl.it; # Useful logs for debug. access_log /var/log/nginx.access.log; error_log /var/log/nginx.error.log; rewrite_log on; # The location of our projects public directory. root /var/www/litl.it/laravel/public; # Point index to the Laravel front controller. index index.php; location / { # URLs to attempt, including pretty ones. try_files $uri $uri/ /index.php?$query_string; } # Remove trailing slash to please routing system. if (!-d $request_filename) { rewrite ^/(.+)/$ /$1 permanent; } # PHP FPM configuration. location ~* \.php$ { proxy_pass http://127.0.0.1:8080; include /etc/nginx/proxy_params; try_files index index.php $uri =404; include /etc/nginx/fastcgi_params; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root/php/$fastcgi_script_name; } # We don't need .ht files with nginx. location ~ /\.ht { deny all; } location @proxy { proxy_pass http://127.0.0.1:8080; include /etc/nginx/proxy_params; } error_page 403 /error/403.html; error_page 404 /error/404.html; error_page 405 /error/405.html; error_page 500 501 502 503 504 /error/5xx.html; location ^~ /error/ { internal; root /var/www/litl.it/lavarel/public/error; } } I'm including these server configs, as I feel this maybe the issue? Here is my incredibly basic routing file that should return "routing is working" on domain.com/test but instead it just returns the homepage. <?php Route::get('/', function() { return View::make('hello'); }); Route::get('/test', function() { return "routing is working"; }); Any ideas where I'm going wrong, I'm following this tutorial very closely and I'm confused why there is issue. Thanks!

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• Call to daemon in a /etc/init.d script is blocking, not running in background

  - by tony

  I have a Perl script that I want to daemonize. Basically this perl script will read a directory every 30 seconds, read the files that it finds and then process the data. To keep it simple here consider the following Perl script (called synpipe_server, there is a symbolic link of this script in /usr/sbin/) : #!/usr/bin/perl use strict; use warnings; my $continue = 1; $SIG{'TERM'} = sub { $continue = 0; print "Caught TERM signal\n"; }; $SIG{'INT'} = sub { $continue = 0; print "Caught INT signal\n"; }; my $i = 0; while ($continue) { #do stuff print "Hello, I am running " . ++$i . "\n"; sleep 3; } So this script basically prints something every 3 seconds. Then, as I want to daemonize this script, I've also put this bash script (also called synpipe_server) in /etc/init.d/ : #!/bin/bash # synpipe_server : This starts and stops synpipe_server # # chkconfig: 12345 12 88 # description: Monitors all production pipelines # processname: synpipe_server # pidfile: /var/run/synpipe_server.pid # Source function library. . /etc/rc.d/init.d/functions pname="synpipe_server" exe="/usr/sbin/synpipe_server" pidfile="/var/run/${pname}.pid" lockfile="/var/lock/subsys/${pname}" [ -x $exe ] || exit 0 RETVAL=0 start() { echo -n "Starting $pname : " daemon ${exe} RETVAL=$? PID=$! echo [ $RETVAL -eq 0 ] && touch ${lockfile} echo $PID > ${pidfile} } stop() { echo -n "Shutting down $pname : " killproc ${exe} RETVAL=$? echo if [ $RETVAL -eq 0 ]; then rm -f ${lockfile} rm -f ${pidfile} fi } restart() { echo -n "Restarting $pname : " stop sleep 2 start } case "$1" in start) start ;; stop) stop ;; status) status ${pname} ;; restart) restart ;; *) echo "Usage: $0 {start|stop|status|restart}" ;; esac exit 0 So, (if I have well understood the doc for daemon) the Perl script should run in the background and the output should be redirected to /dev/null if I execute : service synpipe_server start But here is what I get instead : [root@master init.d]# service synpipe_server start Starting synpipe_server : Hello, I am running 1 Hello, I am running 2 Hello, I am running 3 Hello, I am running 4 Caught INT signal [ OK ] [root@master init.d]# So it starts the Perl script but runs it without detaching it from the current terminal session, and I can see the output printed in my console ... which is not really what I was expecting. Moreover, the PID file is empty (or with a line feed only, no pid returned by daemon). Does anyone have any idea of what I am doing wrong ? EDIT : maybe I should say that I am on a Red Hat machine. Scientific Linux SL release 5.4 (Boron) Would it do the job if instead of using the daemon function, I use something like : nohup ${exe} >/dev/null 2>&1 & in the init script ?

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• Logitech USB headphones detected and selected in Debian Squeeze but sound still coming from speakers

  - by mattalexx

  I have a pair of Logitech wireless USB headphones that work with Ubuntu Natty but aren't working in Debian Squeeze. When they are selected as the default audio output, the sound comes out of the speakers instead of the headphones. I have rebooted and tried using a different USB port. My computer is a Thinkpad T510. How can I fix this problem? Here is lsusb: Bus 002 Device 005: ID 046d:0a29 Logitech, Inc. Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 005: ID 046d:c52f Logitech, Inc. Wireless Mouse M305 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Here is cat /proc/asound/cards 0 [Intel ]: HDA-Intel - HDA Intel HDA Intel at 0xf2420000 irq 17 1 [Headset ]: USB-Audio - Logitech Wireless Headset Logitech Logitech Wireless Headset at usb-0000:00:1d.0-1.1, full speed 2 [NVidia ]: HDA-Intel - HDA NVidia HDA NVidia at 0xcdefc000 irq 17 Here is the gnome-volume-control GUI: Here's lsmod | grep usb: snd_usb_audio 50670 0 snd_usb_lib 11192 1 snd_usb_audio usbhid 28008 0 hid 50909 1 usbhid snd_rawmidi 12513 2 snd_usb_lib,snd_seq_midi snd_hwdep 4054 2 snd_usb_audio,snd_hda_codec snd_pcm 47226 3 snd_usb_audio,snd_hda_intel,snd_hda_codec usbcore 98969 5 snd_usb_audio,snd_usb_lib,usbhid,ehci_hcd snd 34423 11 snd_usb_audio,snd_rawmidi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device nls_base 4541 1 usbcore Here's cat /etc/modprobe.d/alsa-base.conf: # autoloader aliases install sound-slot-0 /sbin/modprobe snd-card-0 install sound-slot-1 /sbin/modprobe snd-card-1 install sound-slot-2 /sbin/modprobe snd-card-2 install sound-slot-3 /sbin/modprobe snd-card-3 install sound-slot-4 /sbin/modprobe snd-card-4 install sound-slot-5 /sbin/modprobe snd-card-5 install sound-slot-6 /sbin/modprobe snd-card-6 install sound-slot-7 /sbin/modprobe snd-card-7 # Cause optional modules to be loaded above generic modules install snd /sbin/modprobe --ignore-install snd && { /sbin/modprobe --quiet snd-ioctl32 ; /sbin/modprobe --quiet snd-seq ; } install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi && { /sbin/modprobe --quiet snd-seq-midi ; : ; } install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && { /sbin/modprobe --quiet snd-emu10k1-synth ; : ; } # Prevent abnormal drivers from grabbing index 0 options bt87x index=-2 options cx88_alsa index=-2 options snd-atiixp-modem index=-2 options snd-intel8x0m index=-2 options snd-via82xx-modem index=-2 # Keep snd-pcsp from beeing loaded as first soundcard options snd-pcsp index=-2 # Keep snd-usb-audio from beeing loaded as first soundcard options snd-usb-audio index=-2 EDIT In VLC, I reset VLC prefs (Output: Default) and sound still comes out of speakers as expected. Then I change it to "Output: ALSA Audio output" and a Device menu appears. I select the headphones. When I then save the prefs, the audio switch to the headphones! But here's what's weird: I go back to prefs, change it to "Output: Default" and the headphones keep working. Maybe the ALSA option is actually what is being chosen as the "Default" option, but the Device menu (whose selection is still being used) is still set to the headphones. Anyway, now I need to figure out how to make it work as the default for the whole system.

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• Unison synchronization problem. Roots are not identical after synchronization.

  - by binary255

  Hi. When I synchronize two folders using Unison, only one of the roots seems to be affected. Below are all the information I would think is necessary to figure out why it is working like it is. I'm using $ unison -version unison version 2.27.57 From the Ubuntu repositories. My work laptop: $ echo $UNISONLOCALHOSTNAME worklaptop $ pwd /home/userfoo $ ls -lAR .unison* .unison: total 8 drwxr-xr-x 2 userfoo userfoo 4096 2010-04-26 11:39 backups -rw-r--r-- 1 userfoo userfoo 231 2010-04-26 11:38 default.prf .unison/backups: total 0 .unisonroot: total 0 $ cat .unison/default.prf # Roots of the synchronization root = /home/userfoo/.unisonroot root = ssh://devel//home/userbar/.unisonroot path = * backuplocation = central backupdir = /home/.unison/backups backupprefix = $VERSION.bak $ mkdir .unisonroot/aDirectoryFrom-$UNISONLOCALHOSTNAME $ echo something >.unisonroot/aFileFrom-$UNISONLOCALHOSTNAME $ ls .unisonroot/ aDirectoryFrom-worklaptop aFileFrom-worklaptop And the Ubuntu server I want to synchronize with: $ echo $UNISONLOCALHOSTNAME workcmpuserbardevel $ pwd /home/userbar $ ls -lAR .unison* .unison: total 4 drwxr-xr-x 2 userbar userbar 4096 2010-04-26 11:38 .unison .unison/.unison: total 0 .unisonroot: total 0 $ mkdir .unisonroot/aDirectoryFrom-$UNISONLOCALHOSTNAME $ echo something >.unisonroot/aFileFrom-$UNISONLOCALHOSTNAME $ ls .unisonroot/ aDirectoryFrom-workcmpuserbardevel aFileFrom-workcmpuserbardevel I perform the unison synchronization: $ echo $UNISONLOCALHOSTNAME worklaptop $ unison Contacting server... Connected [//worklaptop//home/userfoo/.unisonroot -> //workcmpuserbardevel//home/userbar/.unisonroot] Looking for changes Warning: No archive files were found for these roots, whose canonical names are: /home/userfoo/.unisonroot //workcmpuserbardevel//home/userbar/.unisonroot This can happen either because this is the first time you have synchronized these roots, or because you have upgraded Unison to a new version with a different archive format. Update detection may take a while on this run if the replicas are large. Unison will assume that the 'last synchronized state' of both replicas was completely empty. This means that any files that are different will be reported as conflicts, and any files that exist only on one replica will be judged as new and propagated to the other replica. If the two replicas are identical, then no changes will be reported. If you see this message repeatedly, it may be because one of your machines is getting its address from DHCP, which is causing its host name to change between synchronizations. See the documentation for the UNISONLOCALHOSTNAME environment variable for advice on how to correct this. Donations to the Unison project are gratefully accepted: http://www.cis.upenn.edu/~bcpierce/unison Press return to continue.[<spc>] Waiting for changes from server Reconciling changes local workcmps... dir ----> aDirectoryFrom-worklaptop [f] file ----> aFileFrom-worklaptop [f] Proceed with propagating updates? [] y Propagating updates UNISON 2.27.57 started propagating changes at 11:49:14 on 26 Apr 2010 [BGN] Copying aDirectoryFrom-worklaptop from /home/userfoo/.unisonroot to //workcmpuserbardevel//home/userbar/.unisonroot [BGN] Copying aFileFrom-worklaptop from /home/userfoo/.unisonroot to //workcmpuserbardevel//home/userbar/.unisonroot [END] Copying aDirectoryFrom-worklaptop [END] Copying aFileFrom-worklaptop UNISON 2.27.57 finished propagating changes at 11:49:14 on 26 Apr 2010 Saving synchronizer state Synchronization complete (2 items transferred, 0 skipped, 0 failures) And then check the .unisonroot directory on the computer I started the synchronization from: $ ls .unisonroot/ aDirectoryFrom-worklaptop aFileFrom-worklaptop And on the server: $ echo $UNISONLOCALHOSTNAME workcmpuserbardevel $ ls .unisonroot/ aDirectoryFrom-worklaptop aFileFrom-worklaptop aDirectoryFrom-workcmpuserbardevel aFileFrom-workcmpuserbardevel As can be seen above, the contents of the laptop .unisonroot has not changed while the servers .unisonroot has. The desired result would have been that the two folders would have ended up being identical, holding the union of the contents of the two roots.

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• Long connection times from PHP to MySQL on EC2

  - by Erik Giberti

  I'm having an intermittent issue connecting to a database slave with InnoDB. Intermittently I get connections taking longer than 2 seconds. These servers are hosted on Amazon's EC2. The app server is PHP 5.2/Apache running on Ubuntu. The DB slave is running Percona's XtraDB 5.1 on Ubuntu 9.10. It's using an EBS Raid array for the data storage. We already use skip name resolve and bind to address 0.0.0.0. This is a stub of the PHP code that's failing $tmp = mysqli_init(); $start_time = microtime(true); $tmp-options(MYSQLI_OPT_CONNECT_TIMEOUT, 2); $tmp-real_connect($DB_SERVERS[$server]['server'], $DB_SERVERS[$server]['username'], $DB_SERVERS[$server]['password'], $DB_SERVERS[$server]['schema'], $DB_SERVERS[$server]['port']); if(mysqli_connect_errno()){ $timer = microtime(true) - $start_time; mail($errors_to,'DB connection error',$timer); } There's more than 300Mb available on the DB server for new connections and the server is nowhere near the max allowed (60 of 1,200). Loading on both servers is < 2 on 4 core m1.xlarge instances. Some highlights from the mysql config max_connections = 1200 thread_stack = 512K thread_cache_size = 1024 thread_concurrency = 16 innodb-file-per-table innodb_additional_mem_pool_size = 16M innodb_buffer_pool_size = 13G Any help on tracing the source of the slowdown is appreciated. [EDIT] I have been updating the sysctl values for the network but they don't seem to be fixing the problem. I made the following adjustments on both the database and application servers. net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_sack = 0 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_fin_timeout = 20 net.ipv4.tcp_keepalive_time = 180 net.ipv4.tcp_max_syn_backlog = 1280 net.ipv4.tcp_synack_retries = 1 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 87380 16777216 [EDIT] Per jaimieb's suggestion, I added some tracing and captured the following data using time. This server handles about 51 queries/second at this the time of day. The connection error was raised once (at 13:06:36) during the 3 minute window outlined below. Since there was 1 failure and roughly 9,200 successful connections, I think this isn't going to produce anything meaningful in terms of reporting. Script: date /root/database_server.txt (time mysql -h database_Server -D schema_name -u appuser -p apppassword -e '') /dev/null 2 /root/database_server.txt Results: === Application Server 1 === Mon Feb 22 13:05:01 EST 2010 real 0m0.008s user 0m0.001s sys 0m0.000s Mon Feb 22 13:06:01 EST 2010 real 0m0.007s user 0m0.002s sys 0m0.000s Mon Feb 22 13:07:01 EST 2010 real 0m0.008s user 0m0.000s sys 0m0.001s === Application Server 2 === Mon Feb 22 13:05:01 EST 2010 real 0m0.009s user 0m0.000s sys 0m0.002s Mon Feb 22 13:06:01 EST 2010 real 0m0.009s user 0m0.001s sys 0m0.003s Mon Feb 22 13:07:01 EST 2010 real 0m0.008s user 0m0.000s sys 0m0.001s === Database Server === Mon Feb 22 13:05:01 EST 2010 real 0m0.016s user 0m0.000s sys 0m0.010s Mon Feb 22 13:06:01 EST 2010 real 0m0.006s user 0m0.010s sys 0m0.000s Mon Feb 22 13:07:01 EST 2010 real 0m0.016s user 0m0.000s sys 0m0.010s [EDIT] Per a suggestion received on a LinkedIn question, I tried setting the back_log value higher. We had been running the default value (50) and increased it to 150. We also raised the kernel value /proc/sys/net/core/somaxconn (maximum socket connections) to 256 on both the application and database server from the default 128. We did see some elevation in processor utilization as a result but still received connection timeouts.

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