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  • Looking for a short term solution to improve website performance with additional server

    - by Tanim Mirza
    I am working with a small team to run an internal website running with PHP 5.3.9, MySQL 5.0.77. All the files and database are hosted on a dedicated Linux machine with the following configuration: Intel Xeon E5450 8 CPU cores @3.00GHz, 2992.498 MHz, Cache 6148 KB, Cent OS – Red Hat Enterprise Linux Server release 5.4 We started small and then the database got bigger and now the website performance degraded significantly. We often get server space overrun, mysql overloaded with too many calls, etc. We don't have much experience dealing with these issues. We recently got another server that we were thinking to use to improve performance. Since it has better configuration, some of us wanted to completely move everything to the new machine. But I am trying to find out how we can utilize both machine for optimized performance. I found options such as MySQL clustering, Load balancer, etc. I was wondering if I could get any suggestion for this situation "How to utilize two machines in short term for best performance", that would be great. By short term we are looking for something that we can deploy in a month or so. Thanks in advance for your time.

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  • Vyatta masquerade out bridge interface

    - by miquella
    We have set up a Vyatta Core 6.1 gateway on our network with three interfaces: eth0 - 1.1.1.1 - public gateway/router IP (to public upstream router) eth1 - 2.2.2.1/24 - public subnet (connected to a second firewall 2.2.2.2) eth2 - 10.10.0.1/24 - private subnet Our ISP provided the 1.1.1.1 address for us to use as our gateway. The 2.2.2.1 address is so the other firewall (2.2.2.2) can communicate to this gateway which then routes the traffic out through the eth0 interface. Here is our current configuration: interfaces { bridge br100 { address 2.2.2.1/24 } ethernet eth0 { address 1.1.1.1/30 vif 100 { bridge-group { bridge br100 } } } ethernet eth1 { bridge-group { bridge br100 } } ethernet eth2 { address 10.10.0.1/24 } loopback lo { } } service { nat { rule 100 { outbound-interface eth0 source { address 10.10.0.1/24 } type masquerade } } } With this configuration, it routes everything, but the source address after masquerading is 1.1.1.1, which is correct, because that's the interface it's bound to. But because of some of our requirements here, we need it to source from the 2.2.2.1 address instead (what's the point of paying for a class C public subnet if the only address we can send from is our gateway!?). I've tried binding to br100 instead of eth0, but it doesn't seem to route anything if I do that. I imagine I'm just missing something simple. Any thoughts?

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  • Setting Up Apache as a Forward Proxy with Cahcing

    - by Karl
    I am trying to set up Apache as a forward proxy with caching, but it does not seem to be working correctly. Getting Apache working as a forward proxy was no problem, but no matter what I do it is not caching anything, to disk or memory. I already checked to make sure nothing is conflicting in the mods_enabled directory with mod_cache (ended up commenting it all out) and also I tried moving all of the caching related fields to the configuration file for mod_cache. In addition I set up logging for caching requests, but nothing is being written to those logs. Below is my Apache config, any help would be greatly appreciated!! <VIRTUALHOST *:8080> ProxyRequests On ProxyVia On #ErrorLog "/var/log/apache2/proxy-error.log" #CustomLog "/var/log/apache2/proxy-access.log" common CustomLog "/var/log/apache2/cached-requests.log" common env=cache-hit CustomLog "/var/log/apache2/uncached-requests.log" common env=cache-miss CustomLog "/var/log/apache2/revalidated-requests.log" common env=cache-revalidate CustomLog "/var/log/apache2/invalidated-requests.log" common env=cache-invalidate LogFormat "%{cache-status}e ..." # This path must be the same as the one in /etc/default/apache2 CacheRoot /var/cache/apache2/mod_disk_cache # This will also cache local documents. It usually makes more sense to # put this into the configuration for just one virtual host. CacheEnable disk / #CacheHeader on CacheDirLevels 3 CacheDirLength 5 ##<IfModule mod_mem_cache.c> # CacheEnable mem / # MCacheSize 4096 # MCacheMaxObjectCount 100 # MCacheMinObjectSize 1 # MCacheMaxObjectSize 2048 #</IfModule> <Proxy *> Order deny,allow Deny from all Allow from x.x.x.x #IP above hidden for this post <filesMatch "\.(xml|txt|html|js|css)$"> ExpiresDefault A7200 Header append Cache-Control "proxy-revalidate" </filesMatch> </Proxy> </VIRTUALHOST> Thank you once again!

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  • LSI 9260-8i w/ 6 256gb SSDs - RAID 5, 6, 10, or bad idea overall?

    - by Michael Pearson
    We're provisioning a new production server for our reasonably busy website. Our choice of host have available a 6 drive configuration with a LSI 9260-8i card. My initial thought was to fill all six bays with SSDs (Intel 520 256gb) and set them up in RAID. Good, bad, or terrible idea? Can the card handle it? Should we be using RAID 5, 6 or 10? This would be the first time the provider have filled all six slots for this rackmount with SSDs, so they're a bit hesitant. I'm wondering if somebody else with this card has done something similar in a production environment. We do about 43gb of writes per day and currently use about 300gb of storage. The server acts as webserver, database, and image store for approx 1 million files. The plan is to underprovision the SSDs by approximately 10% to 20% to increase their overall lifespan & performance. The fallback option is 2x480gb SSDs in RAID 1 and another 2x1TB HDDs in RAID 1. The motivation behind this is that the server rental cost difference between 2xSSDs and 6xSSDs is minimal (compared to the overall cost of the rental). We do not have any special high-IOPs requirements. However, if the configuration is known to work, I don't see a good reason to not use it and not have to worry about having separate 'fast and small' and 'slow and large' disks.

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  • IBM Thinkpad 240 - Best way to boot from floppy to USB - Best Linux for 300 MHz 128 MB RAM 800x600 s

    - by zillion
    Mostly I still have that old 'ultraportable' laptop that is mostly like a pre-netbook era laptop and a friend and programmer needs a computer because the one he was using just broke and he has to wait until the new one arrive in 4-6 weeks ... This laptop has no LAN connection and CD-ROM so be prepared for a real challenge! All hardware is well supported on Windows XP (included drivers on the Windows XP CD) and on Linux out-of-the-box (but the screen need a special configuration.) Mostly any Linux that will work well with Skype (USB or regular headset), any MSN client and a text writer for code will do. What I have tested so far: Slitaz 2 don't boot because the floppy of GRUB4DOS don't see the USB drive (fully working and tested on my regular laptop), Damn Small Linux was working but was needing a special screen configuration that I don't remember (in the boot options of the floppy) and now I'm thinking about Puppy Linux that is seen to work totally out of the box with it but I will need an old Puppy version (1 or 2 I think) and the Wakepup floppy ... If you got some ideas to help or to try I'm open!

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  • exim4 to relay emails

    - by Matthieu
    I have exim4 installed on a Linux box. The basics work fine and I can send email from that machine without any problem to whatever email address. I also have a printer/scanner which is capable to send scans as emails. It needs an SMTP gateway to be able to do that. So I give the IP address of that Linux box, changed the configuration a little bit but still cannot get it to work. After I run dpkg-reconfigure exim4-config, here is what I get in /etc/exim4/update-exim4.conf.conf : dc_eximconfig_configtype='internet' dc_other_hostnames='' dc_local_interfaces='127.0.0.1;192.168.2.2' dc_readhost='' dc_relay_domains='mycompanyemail.com' dc_minimaldns='false' dc_relay_nets='192.168.2.0/24' dc_smarthost='' CFILEMODE='644' dc_use_split_config='false' dc_hide_mailname='' dc_mailname_in_oh='true' dc_localdelivery='mail_spool' My problem is that with this configuration, I can only send to emails @mycompanyemail.com... It says I can use wildcard, but when I do that, the '*' is replaced by whatever filename is in the directory where I run all that. How can I configure it to be able to send emails with any domain ? Or am I doing it wrong ? EDIT : here is the part of the log that's causing trouble : 2011-08-03 16:28:18 H=(NPI2D389C) [192.168.2.20] F=<[email protected]> rejected RCPT <[email protected]>: relay not permitted The first part ([email protected]) does not matter. I changed the email address. The point is that if this email is @mycompanyemail.com then everything works fine. Anything else does not work. I could add gmail.com, but I am looking to have any domain working...

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  • How to install RMagick RubyGem on Mac OS X 10.6 Snow Leopard?

    - by misbehavens
    I am getting this error while trying to install RMagick: $ sudo gem install rmagick Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb checking for Ruby version >= 1.8.5... yes checking for gcc... yes checking for Magick-config... no Can't install RMagick 2.13.1. Can't find Magick-config in /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/opt/local/bin:/usr/local/git/bin:~/bin:/usr/local/bin:/usr/local/mysql/bin:/usr/local/pear/bin *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/rmagick-2.13.1 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/rmagick-2.13.1/ext/RMagick/gem_make.out How can I install the RMagick RubyGem on Snow Leopard?

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  • Re-configure Office 2007 installation unattended: Advertised components --> Local

    - by abstrask
    On our Citrix farm, I just found out that some sub-components are "Installed on 1st Use" (Advertised), which does play well on terminal servers. Not only that, but you also get a rather non-descriptive error message, when a document tried to use a component, which is "Installed on 1st Use" (described on Plan to deploy Office 2010 in a Remote Desktop Services environment): Microsoft Office cannot run this add-in. An error occurred and this feature is no longer functioning correctly. Please contact your system administrator. I have ~50 Citrix servers where I need to change the installation state of all Advertised components to Local, so I created an XML file like this: <?xml version="1.0" encoding="utf-8"?> <Configuration Product="ProPlus"> <Display Level="none" CompletionNotice="no" SuppressModal="yes" AcceptEula="yes" /> <Logging Type="standard" Path="C:\InstallLogs" Template="MS Office 2007 Install on 1st Use(*).log" /> <Option Id="AccessWizards" State="Local" /> <Option Id="DeveloperWizards" State="Local" /> <Setting Id="Reboot" Value="NEVER" /> </Configuration> I run it with a command like this (using the appropriate paths): "[..]\setup.exe" /config ProPlus /config "[..]\Install1stUse-to-Forced.xml" According to the log file, the syntax appears to be accepted and the config file parsed: Parsing command line. Config XML file specified: [..]\Install1stUse-to-Forced.xml Modify requested for product: PROPLUS Parsing config.xml at: [..]\Install1stUse-to-Forced.xml Preferred product specified in config.xml to be: PROPLUS But the "Final Option Tree" still reads: Final Option Tree: AlwaysInstalled:local Gimme_OnDemandData:local ProductFiles:local VSCommonPIAHidden:local dummy_MSCOMCTL_PIA:local dummy_Office_PIA:local ACCESSFiles:local ... AccessWizards:advertised DeveloperWizards:advertised ... And the components remain "Advertised". Just to see if the installation state is overridden in another XML file, I ran: findstr /l /s /i "AccessWizards" *.xml Against both my installation source and "%ProgramFiles%\Common Files\Microsoft Shared\OFFICE12\Office Setup Controller", but just found DefaultState to be "Local". What am I doing wrong? Thanks!

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  • OpenVPN server throws an "access denied" error

    - by HackToHell
    OpenVPN refuses to start up and exists with this error ever since i upgraded Ubuntu from 1.04 to 11.10 Dec 14 19:12:38 oogle ovpn-server[32150]: OpenVPN 2.2.0 i686-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [eurephia] [MH] [PF_INET6] [IPv6 payload 20110424-2 (2.2RC2)] built on Jul 4 2011 Dec 14 19:12:38 oogle ovpn-server[32150]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts Dec 14 19:12:38 oogle ovpn-server[32150]: Note: cannot open openvpn-status.log for WRITE Dec 14 19:12:38 oogle ovpn-server[32150]: Note: cannot open ipp.txt for READ/WRITE Dec 14 19:12:38 oogle ovpn-server[32150]: Diffie-Hellman initialized with 1024 bit key Dec 14 19:12:38 oogle ovpn-server[32150]: Cannot load private key file server.key: error:0200100D:system library:fopen:Permission denied: error:20074002:BIO routines:FILE_CTRL:system lib: error:140B0002:SSL routines:SSL_CTX_use_PrivateKey_file:system lib Dec 14 19:12:38 oogle ovpn-server[32150]: Error: private key password verification failed Dec 14 19:12:38 oogle ovpn-server[32150]: Exiting Dec 14 19:12:46 oogle ovpn-server[32201]: OpenVPN 2.2.0 i686-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [eurephia] [MH] [PF_INET6] [IPv6 payload 20110424-2 (2.2RC2)] built on Jul 4 2011 Dec 14 19:12:46 oogle ovpn-server[32201]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts Dec 14 19:12:46 oogle ovpn-server[32201]: Note: cannot open openvpn-status.log for WRITE Dec 14 19:12:46 oogle ovpn-server[32201]: Note: cannot open ipp.txt for READ/WRITE Dec 14 19:12:46 oogle ovpn-server[32201]: Diffie-Hellman initialized with 1024 bit key Dec 14 19:12:46 oogle ovpn-server[32201]: Cannot load private key file server.key: error:0200100D:system library:fopen:Permission denied: error:20074002:BIO routines:FILE_CTRL:system lib: error:140B0002:SSL routines:SSL_CTX_use_PrivateKey_file:system lib Dec 14 19:12:46 oogle ovpn-server[32201]: Error: private key password verification failed Dec 14 19:12:46 oogle ovpn-server[32201]: Exiting

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  • Can't login via ssh after upgrading to Ubuntu 12.10

    - by user42899
    I have an Ubuntu 12.04LTS instance on AWS EC2 and I upgraded it to 12.10 following the instructions at https://help.ubuntu.com/community/QuantalUpgrades. After upgrading I can no longer ssh into my VM. It isn't accepting my ssh key and my password is also rejected. The VM is running, reachable, and SSH is started. The problem seems to be about the authentication part. SSH has been the only way for me to access that VM. What are my options? ubuntu@alice:~$ ssh -v -i .ssh/sos.pem [email protected] OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012 debug1: Reading configuration data /home/ubuntu/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to www.hostname.com [37.37.37.37] port 22. debug1: Connection established. debug1: identity file .ssh/sos.pem type -1 debug1: identity file .ssh/sos.pem-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1 debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: RSA 33:33:33:33:33:33:33:33:33:33:33:33:33:33 debug1: Host '[www.hostname.com]:22' is known and matches the RSA host key. debug1: Found key in /home/ubuntu/.ssh/known_hosts:12 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: .ssh/sos.pem debug1: read PEM private key done: type RSA debug1: Authentications that can continue: publickey,password debug1: Next authentication method: password [email protected]'s password: debug1: Authentications that can continue: publickey,password Permission denied, please try again.

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  • Kerberos & localhost

    - by Alex Leach
    I've got a Kerberos v5 server set up on a Linux machine, and it's working very well when connecting to other hosts (using samba, ldap or ssh), for which there are principals in my kerberos database. Can I use kerberos to authenticate against localhost though? And if I can, are there reasons why I shouldn't? I haven't made a kerberos principal for localhost. I don't think I should; instead I think the principal should resolve to the machine's full hostname. Is that possible? I'd ideally like a way to configure this on just one server (whether kerberos, DNS, or ssh), but if each machine needs some custom configuration, that'd work too. e.g $ ssh -v localhost ... debug1: Unspecified GSS failure. Minor code may provide more information Server host/[email protected] not found in Kerberos database ... EDIT: So I had a bad /etc/hosts file. If I remember correctly, the original version I got with Ubuntu had two 127.0. IP addresses, something like:- 127.0.0.1 localhost 127.0.*1*.1 hostname For no good reason, I'd changed mine a long time ago to: 127.0.0.1 localhost 127.0.*0*.1 hostname.example.com hostname This seemed to work fine with everything until I tried out ssh with kerberos (a recent endeavour). Somehow this configuration led to sshd resolving the machine's kerberos principal to "host/localhost@\n", which I suppose makes sense if it uses /etc/hosts for forward and reverse dns lookups in preference to external dns. So I commented out the latter line, and sshd magically started authenticating with gssapi-with-mic. Awesome. (Then I investigated localhost and asked the question)

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  • Dropped connections between Linux Servers in Data Center

    - by Emil H
    I have a number of linux servers at a us-based datacenter. The servers were installed by the hosting company, and are running fedora core. We're experiencing problems with dropped connections. The issue seems to be that when we attempt to connect to one of the other servers after a period of inactivity, the first connection attempt will fail, and sometimes the second. However, after that the connection succeds and it works for a while. This happens for both mysql connections and raw socket connections, but only seems to occur when connecting to some of our servers. The confusing part is that it some of the servers for which we see different behaviors have identical hardware configuration and software. For example, it happens when connecting to a server called mysql2, but not for a server called mysql3. These servers were installed at the same time, but the same specifications. The problem can be reproduced somewhat reliably, but only after waiting fifteen minutes to half an hour. This makes it hard to diagnose, and even harder since I'm not really sure what to look for. I realize that connections sometimes failed, and that we should write our applications to compensate for this but these servers all in the same data center. Why would it matter if two servers haven't communicated for a while? Does anybody have an idea what might be causing this? Is it a server configuration problem or a network problem that I should contact the hosting company about. What do I tell them to look for? Unfortunately our experience has been that the support staff doesn't investigate problems in depth unless we give them detailed directions.

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  • Why is the link between my switch and my router always negotiating half-duplex mode?

    - by Massimo
    I have a Cisco 2950 switch which has one of its ports connected to an Internet router provided by my ISP; I have no access to the router configuration, but I manage the switch. If I leave all switch ports with their default setup (auto-negotiation of speed and duplex mode), this link always connects at 100 MBit/s, but in half-duplex mode. I've tried replacing the cable, and also moving the link to another switch port: the result is always the same. A different device connected to the same port (or to any switch port, really) shows no problem at all. It could be guesed that someone configured the router to only connect in half-duplex mode... BUT, here's the catch: if I manually force the switch port to full-duplex mode (duplex full in the interface configuration), the link goes up, stays up and is completely stable. So: The connection is not forced to half-duplex mode by the router, otherwise it would not connect at all if I force the switch end to full-duplex. There is no actual link problem, otherwise the full-duplex connection would not go up or would at least show some errors. But if I leave the port free to auto-negotiate, it always connects in half-duplex mode. Why?

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  • Installing sqlite gem fails on AWS Linux instance with sqlite-devel libraries installed

    - by Scott
    Hi, I'm running an instance built off ami-595a0a1c. I am trying to install the sqlite3 (or sqlite) gem and it's failing with the below error: $ sudo gem install sqlite3 Building native extensions. This could take a while... ERROR: Error installing sqlite3: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb checking for sqlite3.h... no sqlite3.h is missing. Try 'port install sqlite3 +universal' or 'yum install sqlite3-devel' and check your shared library search path (the location where your sqlite3 shared library is located). extconf.rb failed * Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/bin/ruby --with-sqlite3-dir --without-sqlite3-dir --with-sqlite3-include --without-sqlite3-include=${sqlite3-dir}/include --with-sqlite3-lib --without-sqlite3-lib=${sqlite3-dir}/lib Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/sqlite3-1.3.3 for inspection. Results logged to /usr/lib64/ruby/gems/1.8/gems/sqlite3-1.3.3/ext/sqlite3/gem_make.out Typically, this just means you need to install the development libraries and everything is cool. However, I have installed the sqlite-devel packages and still no dice. Since this is the Amazon Linux instance, I'd rather not add more repositories than the ones Amazon provides if possible. What can i do to get this thing to compile? Thanks for any insight! From a brand new instance, here's what I've done: $ sudo yum install rubygems ruby-devel $ sudo gem update --system $ sudo gem install rails $ rails new app $ cd app $ rails server Could not find gem 'sqlite3 (= 0)' in any of the gem sources listed in your Gemfile. $ sudo yum install sqlite-devel $ sudo gem install sqlite (or sqlite3 -- same result) See breakage above

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  • ProCurve 1800 switch issue

    - by user98651
    I recently deployed ProCurve 1800-24G switches in place of some older ProCurve 2424M switches in my network. However, I'm having a serious problem with the switch connected to the router. It seems, every night when our Windows 2008 R2 server (off site) runs a backup to a iSCSI target (on site) [facilitated through a PPTP tunnel] the LAN loses connectivity with the router. To clarify, there is only one router which is connected to the switch affected by this problem. The only way to resolve the issue is to either reboot the router or pull the ethernet cable that goes to the router and plug it back in. During the outage, clients cannot receive DHCP requests, DNS requests, ping, or do anything else with the router in this state. Now, neither the switch or router are configured extensively and the issue only seems to have surfaced with the new switch in place. I have tried a number of things including replacing cables, rebooting and checking the switch configuration (it is literally as basic as you can get at this point-- flat LAN, no trunking). Interestingly, the router shows (accessed externally) no changes in configuration or status during this state but similarly cannot ping or access other hosts on the network. This issue occurs in different stages of backup (ie, different amounts transferred). I've also dumped packets from the switch into WireShark but cannot seem to find any anomaly yet (I'm looking at packets around the time the issue appeared and at the time when I reset the NIC). Any suggestions for what to look for? Ideas on what could be causing this? I'm seeing some transmit/receive errors on the NIC from both the router and switch side but nothing serious when compared to the total packet counts. I'm seriously doubting hardware at this point, as I have tried another switch, different cables, and a different NIC on the router.

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  • MySQL Cluster ndb_mgmd error

    - by Patryk
    I set up MySQL Cluster on Ubuntu. My ndb_mgmd.cnf file looked: [NDBD DEFAULT] NoOfReplicas=2 DataDir= /var/lib/mysql-cluster # Management Node [NDB_MGMD] NodeId=1 HostName=192.168.204.20 DataDir=/var/lib/mysql-cluster # Storage Nodes (one for each node) [NDBD] NodeId=2 HostName=192.168.204.25 DataDir=/var/lib/mysql-cluster [NDBD] NodeId=3 HostName=192.168.204.26 DataDir=/var/lib/mysql-cluster # SQL Nodes (one for each node) [MYSQLD] NodeId=4 HostName=192.168.204.30 Now I want to edit this configuration, so I changed this file: [NDBD DEFAULT] NoOfReplicas=2 DataDir= /var/lib/mysql-cluster # Management Node [NDB_MGMD] NodeId=1 HostName=192.168.204.20 DataDir=/var/lib/mysql-cluster # Storage Nodes (one for each node) [NDBD] NodeId=2 HostName=192.168.204.25 DataDir=/var/lib/mysql-cluster [NDBD] NodeId=3 HostName=192.168.204.26 DataDir=/var/lib/mysql-cluster # SQL Nodes (one for each node) [MYSQLD] NodeId=4 HostName=192.168.204.25 [MYSQLD] NodeId=5 HostName=192.168.204.26 But ndb_mgm > show; still shows: Connected to Management Server at: localhost:1186 Cluster Configuration --------------------- [ndbd(NDB)] 2 node(s) id=2 (not connected, accepting connect from 192.168.204.25) id=3 (not connected, accepting connect from 192.168.204.26) [ndb_mgmd(MGM)] 1 node(s) id=1 @192.168.204.20 (mysql-5.1.51 ndb-7.1.9) [mysqld(API)] 1 node(s) id=4 (not connected, accepting connect from 192.168.204.30) I tried: sudo /etc/init.d/mysql-ndb-mgm restart sudo ndb_mgmd --initial sudo ndb_mgmd -f /etc/mysql/ndb_mgmd.cnf And nothing works. Any help?

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  • Public-to-Public IPSec tunnel: NAT confusion

    - by WuckaChucka
    I know this is possible -- and apparently fairly common with larger companies that don't/can't route private addresses for overlap reasons -- but I can't wrap my head around how to get this to work. I'm playing around with pfSense, Vyatta and a Cisco 5505 right now, hardware-wise. So here's my setup: WEST: Vyatta outside: 10.0.0.254/24 inside: 172.16.0.1/24 machine a: 172.16.0.200/24 EAST: Cisco 5505 outside: 10.0.0.210/24 inside: 192.168.10.1 machine b (webserver): 192.168.10.2 So what we're trying to do is this: route traffic across the tunnel from machine A to machine B without using private addresses. i.e. 172.16.0.200 makes a TCP request to 10.0.0.210:80, and as far as EAST is concerned, it sees a src IP of 10.0.0.254. On WEST, I have your typical many-to-one Source NAT to translate 172.16.0.0/24 to 10.0.0.254 and that's confirmed to be working. Also on WEST, I have the following IPSec config: Local IP: 10.0.0.254 Peer IP: 10.0.0.210 local subnet: 10.0.0.254/32 remote subnet: 10.0.0.210/32 I have the reversed configuration on EAST. What happens when I make a request from machine A to 10.0.0.210:80 is that the SNAT translates the private address of machine A to 10.0.0.254 and it's routed out (and discarded at the other end) without establishing the tunnel. What I'm assuming is happening is that the inside interface on WEST receives a packet from 172.16.0.200 and since this doesn't match the local subnet defined in the tunnel configuration, it's not processed by the IPSec engine and the tunnel is not established. How do you make this work? Seems like a chicken and egg thing with the NAT and IPSec and I just can't wrap my head around how this can be done: can I say, "if a packet is received on the inside interface with a destination of 10.0.0.210, translate it to 10.0.0.254 before the IPSec engine inspects it"?

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  • configure Squid3 proxy server on Ubuntu with caching and logging

    - by Panshul
    I have a ubuntu 11.10 machine. Installed Squid3. When i configure the squid as http_access allow all, everything works fine. my current configuration mostly default is as follows: 2012/09/10 13:19:57| Processing Configuration File: /etc/squid3/squid.conf (depth 0) 2012/09/10 13:19:57| Processing: acl manager proto cache_object 2012/09/10 13:19:57| Processing: acl localhost src 127.0.0.1/32 ::1 2012/09/10 13:19:57| Processing: acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 2012/09/10 13:19:57| Processing: acl SSL_ports port 443 2012/09/10 13:19:57| Processing: acl Safe_ports port 80 # http 2012/09/10 13:19:57| Processing: acl Safe_ports port 21 # ftp 2012/09/10 13:19:57| Processing: acl Safe_ports port 443 # https 2012/09/10 13:19:57| Processing: acl Safe_ports port 70 # gopher 2012/09/10 13:19:57| Processing: acl Safe_ports port 210 # wais 2012/09/10 13:19:57| Processing: acl Safe_ports port 1025-65535 # unregistered ports 2012/09/10 13:19:57| Processing: acl Safe_ports port 280 # http-mgmt 2012/09/10 13:19:57| Processing: acl Safe_ports port 488 # gss-http 2012/09/10 13:19:57| Processing: acl Safe_ports port 591 # filemaker 2012/09/10 13:19:57| Processing: acl Safe_ports port 777 # multiling http 2012/09/10 13:19:57| Processing: acl CONNECT method CONNECT 2012/09/10 13:19:57| Processing: http_access allow manager localhost 2012/09/10 13:19:57| Processing: http_access deny manager 2012/09/10 13:19:57| Processing: http_access deny !Safe_ports 2012/09/10 13:19:57| Processing: http_access deny CONNECT !SSL_ports 2012/09/10 13:19:57| Processing: http_access allow localhost 2012/09/10 13:19:57| Processing: http_access deny all 2012/09/10 13:19:57| Processing: http_port 3128 2012/09/10 13:19:57| Processing: coredump_dir /var/spool/squid3 2012/09/10 13:19:57| Processing: refresh_pattern ^ftp: 1440 20% 10080 2012/09/10 13:19:57| Processing: refresh_pattern ^gopher: 1440 0% 1440 2012/09/10 13:19:57| Processing: refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 2012/09/10 13:19:57| Processing: refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880 2012/09/10 13:19:57| Processing: refresh_pattern . 0 20% 4320 2012/09/10 13:19:57| Processing: http_access allow all 2012/09/10 13:19:57| Processing: cache_mem 512 MB 2012/09/10 13:19:57| Processing: logformat squid3 %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru 2012/09/10 13:19:57| Processing: access_log /home/panshul/squidCache/log/access.log squid3 The problem starts when I enable the following line: access_log /home/panshul/squidCache/log/access.log I start to get proxy server is refusing connections error in the browser. on commenting out the above line in my config, things go back to normal. The second problem starts when i add the following line to my config: cache_dir ufs /home/panshul/squidCache/cache 100 16 256 The squid server fails to start. Any suggestions what am I missing in the config. Please help.!!

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  • Please advise on VPS config choice (with SQL Server Express)

    - by tjeuten
    Hi all, I might be interested in getting a VPS hosting plan for some small personal sites and .NET projects. Was thinking of Softsys Bronze Plan, as my current shared host plan is with them too. The stuff I want to host has grown beyond the capabilities of a Shared hosting plan, and I also want more control over the IIS/ASP.NET configuration, that's why I'm considering VPS. The main config details would be: Hyper-V 30 GB of diskspace 1 GB of RAM More info here: http://www.softsyshosting.com/Windows-VPS-HyperV.aspx Does anyone have experience with this plan (or something similar from another host), and maybe could answer these couple of questions: Bronze has a total diskspace of 30GB. Is the OS part of this quota or not ? If so, how much does a base configuration with Windows 2008 take up in diskspace ? Would you advise Windows 2008 R2 or Normal. Or would you advise to use Windows 2003 with this config. I'm planning on running a SQL Server Express install too. Would 1 GB of RAM be enough for both the Windows 2008 (R2) and SQL Express. The database load will not be that very high (a couple of 1000 records returned each day). The DB will most likely be far away from the 4GB limit, that's why I'd go for a SQL Express instead of paying extra licensing costs for a SQL Web install. But I'm more concerned about performance. Would you recommend Softsys as a VPS host ? I've been with them for one year for my Shared hosting plan, and have no complaints so far. Also, as I have no VPS experience, what are the pitfalls I need to be aware of, in terms of performance mainly, but maybe in other areas too ? Mathieu

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  • Mac OSX and root login enabled

    - by reza
    All I am running OSX 10.6.8 I have enabled root login through Directory Utility. I have assigned a password. I get an error when I try to ssh root@localhost. ssh -v root@localhost OpenSSH_5.2p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /Users/rrazavipour-lp/.ssh/config debug1: Reading configuration data /etc/ssh_config debug1: Connecting to localhost [127.0.0.1] port 22. debug1: Connection established. debug1: identity file /Users/rrazavipour-lp/.ssh/identity type -1 debug1: identity file /Users/rrazavipour-lp/.ssh/id_rsa type 1 debug1: identity file /Users/rrazavipour-lp/.ssh/id_dsa type 2 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.2 debug1: match: OpenSSH_5.2 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.2 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'localhost' is known and matches the RSA host key. debug1: Found key in /Users/rrazavipour-lp/.ssh/known_hosts:47 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering public key: /Users/rrazavipour-lp/.ssh/id_dsa debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Trying private key: /Users/rrazavipour-lp/.ssh/identity debug1: Offering public key: /Users/rrazavipour-lp/.ssh/id_rsa debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: keyboard-interactive Password: debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Authentications that can continue: publickey,keyboard-interactive debug1: No more authentication methods to try. Permission denied (publickey,keyboard-interactive). What I am doing wrong? I know I have the password correct.

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  • Exchange Online SMTP Not Working With Any Email Client

    - by emre nevayeshirazi
    I am trying to switch our company mail server to exchange online. I have successfully added my domain and users and can send and receive mails through Outlook Web App. I can also send and receive if I configure my Outlook 2013 client using Exchange protocol. However, some folks in company are using Thunderbird and some old Outlook Clients. For those, I tried to connect to Exchange via IMAP/SMTP. This is what I use, For incoming, IMAP / Port : 993 with SSL / Host : outlook.office365.com For outgoing, SMTP / Port : 589 with TSL / Host : smtp.office365.com I can receive emails, however I could not be able to send emails. I keep getting An error occurred while sending mail. The mail server responded: 4.3.2 Service not active. Please verify that your email address is correct in your Mail preferences and try again. My username and password are correct, I am using my mail address as my username to mailbox. I also tried sending mail via C# application which was working for outlook.com and gmail.com SMTP settings. It also fails to send emails and returns the same error code. I thought TB and other old clients such as Office 2003 might not support Exc. Online so I tried same settings in Office 2013. It successfully connected my mailbox when checking for configuration but failed in sending test message and returned the same error code. Configuration for incoming and outgoing mailbox are taken from here. They are also available on Office 365 user page and they are same. What could be the reason for error ?

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  • SQL Server Agent refuses to start

    - by Geo Ego
    I'm having a problem with SQL Server 2005 where the SQL Server Agent suddenly refuses to start. If I attempt to start it through Services, I get the error "SQL Server Agent (MSSQLSERVER) service on Local Computer started and then stopped." In the Application log, I have the following entry: Event Type: Error Event Source: SQLSERVERAGENT Event Category: Service Control Event ID: 103 Date: 5/20/2010 Time: 11:07:07 AM User: N/A Computer: SHAREPOINT Description: SQLServerAgent could not be started (reason: Unable to connect to server 'SHAREPOINT'; SQLServerAgent cannot start). This database has been running fine for four months. It contains a SharePoint configuration database, which two days ago stopped working, throwing me a message that the configuration database cannot be reached. It was then that I realized the SQL Server Agent was not running, and I have been unable to restart it. I have tried running it with both the local system account and the network service account, with the same results. So far, I have tried: Granting the administrators group, network service, and SharePoint SQL Server Agent account public and sysadmin roles on the database. Granting the administrators group, network service, and SharePoint SQL Server Agent account full permissions to the entire MSSQL directory and all files within. I still have no joy.

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  • apache with php fastcgi keeps going down

    - by Josh Nankin
    I have an apache2 server configured with MPM worker and php fast cgi. Lately the apache logs have been telling me that MaxClients is being reached frequently, even though it's already pretty high. My server is now constantly going down, and I see a bunch of lines like this in the log: [Sun Mar 06 04:25:40 2011] [error] [client 50.16.83.115] FastCGI: comm with (dynamic) server "/var/local/fcgi/php-cgi-wrapper.fcgi" aborted: (first read) idle timeout (20 sec) [Sun Mar 06 04:25:40 2011] [error] [client 50.16.83.115] FastCGI: incomplete headers (0 bytes) received from server "/var/local/fcgi/php-cgi-wrapper.fcgi" I can see that my php-cgi processes are pretty large (about 70mb on average). Here's my apache configuration for MPM worker: KeepAlive ON KeepAliveTimeout 2 <IfModule mpm_worker_module> StartServers 5 MinSpareThreads 10 MaxSpareThreads 10 ThreadLimit 64 ThreadsPerChild 10 MaxClients 20 MaxRequestsPerChild 2000 </IfModule> Heres my fastcgi apache configuration: <IfModule mod_fastcgi.c> # One shared PHP-managed fastcgi for all sites Alias /fcgi /var/local/fcgi # IMPORTANT: without this we get more than one instance # of our wrapper, which itself spawns 20 PHP processes, so # that would be Bad (tm) FastCgiConfig -idle-timeout 20 -maxClassProcesses 1 <Directory /var/local/fcgi> # Use the + so we don't clobber other options that # may be needed. You might want FollowSymLinks here Options +ExecCGI </Directory> AddType application/x-httpd-php5 .php AddHandler fastcgi-script .fcgi Action application/x-httpd-php5 /fcgi/php-cgi-wrapper.fcgi </IfModule> Here's my fastcgi wrapper: #!/bin/sh PHPRC="/etc/php5/apache2" export PHPRC PHP_FCGI_CHILDREN=8 export PHP_FCGI_CHILDREN exec /usr/bin/php-cgi Any help would be very very much appreciated!

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  • Switching from prefork MPM to worker MPM + php-fpm on ubuntu

    - by Shane
    All tutorials I found were how to fresh install worker MPM + PHP-FPM, since my wordpress blog's already up and running with prefork MPM, correct me if I'm wrong in the simulated installation process: I'm on ubuntu and according to some tutorials, the following lines would do all the tricks: apt-get install apache2-mpm-worker libapache2-mod-fastcgi php5-fpm php5-gd a2enmod actions fastcgi alias Then you setup configuration in /etc/apache2/conf.d/php5-fpm.conf: <IfModule mod_fastcgi.c> AddHandler php5-fcgi .php Action php5-fcgi /php5-fcgi Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -host 127.0.0.1:9000 -pass-header Authorization </IfModule> After all these, restart: service apache2 restart && service php5-fpm restart Question: 1) Would it cause any down time in the whole process for previously running sites with prefork MPM? 2) Do you have to change any already existent configuration files like php or mysql or apache2(would they take effect immediately after the switch without you doing anything)? 3) I've already have apc up and running, do you have to re-install/re-configure it after the switch? 4) How do you find out if apache2 is working in worker MPM mode as expected? Thanks a lot!

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  • Connecting XRAID to Sunfire via LSI FC card - Drives not showing up

    - by Matthew Watson
    Hi, I've got a Sunfire T1000 machine ( Solaris 10 10/09 s10s_u8wos_08a SPARC ) with a LSI7404EP-LC fibre channel card in it. This is plugged into an XRAID. The system seems to have picked up the card > /usr/platform/`uname -i `/sbin/prtdiag IO Location Type Slot Path Name Model ----------- ----- ---- --------------------------------------------- ------------------------- --------- MB/PCIE0 PCIE 0 /pci@780/fibre-channel fibre-channel MB/PCIE0 PCIE 0 /pci@780/fibre-channel fibre-channel MB/NET0 PCIE MB /pci@7c0/pci@0/network@4 network-pci14e4,1668 MB/NET1 PCIE MB /pci@7c0/pci@0/network@4,1 network-pci14e4,1668 MB/NET2 PCIX MB /pci@7c0/pci@0/pci@8/network@1 network-pci108e,1648 MB/NET3 PCIX MB /pci@7c0/pci@0/pci@8/network@1,1 network-pci108e,1648 MB/PCIX PCIX MB /pci@7c0/pci@0/pci@8/scsi@2 scsi-pci1000,50 LSI,1064 However it doesn't seem to be able to see the xraid attached to it, lsiutil only reports the onboard SAS controller. > /usr/local/bin/lsiutil ~ LSI Logic MPT Configuration Utility, Version 1.62, January 14, 2009 1 MPT Port found Port Name Chip Vendor/Type/Rev MPT Rev Firmware Rev IOC 1. mpt0 LSI Logic SAS1064 A3 105 010a0000 0 Select a device: [1-1 or 0 to quit] I've tried adding the configuration to /kernal/drv/sd.conf and /kernal/drv/ssd.conf as per this thread, however format still cannot see any drives on the xraid. I'm not sure where to go next. Any suggestions? From what I've read..this should pretty much just eb plug it in and they show up in format..

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