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	<title>Supportex.net</title>
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	<link>http://supportex.net</link>
	<description>Outsourced Linux Administration. Support for Linux, FreeBSD, AIX</description>
	<lastBuildDate>Tue, 17 Apr 2012 13:25:44 +0000</lastBuildDate>
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		<item>
		<title>elasticsearch: installation and configuration on Centos 6.2</title>
		<link>http://supportex.net/2012/04/elasticsearch-installation-centos/</link>
		<comments>http://supportex.net/2012/04/elasticsearch-installation-centos/#comments</comments>
		<pubDate>Tue, 03 Apr 2012 15:53:03 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[CentOS]]></category>
		<category><![CDATA[elasticsearch]]></category>
		<category><![CDATA[rpm]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2722</guid>
		<description><![CDATA[The installation of elasticsearch (which is distributed RESTful, search engine built on top of Apache Lucene) on Centos, will be easier if it is in repositories. But it isn&#8217;t. And since the best way to install application on Centos is to use rpm packages we will need to build it. At the very beginning you [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/04/elasticsearch-installation-centos/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>vBulletin: attachments downloads optimization using vb-accelerator</title>
		<link>http://supportex.net/2012/03/vbulletin-attachments-downloads-optimization/</link>
		<comments>http://supportex.net/2012/03/vbulletin-attachments-downloads-optimization/#comments</comments>
		<pubDate>Wed, 21 Mar 2012 22:29:15 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[nginx]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2708</guid>
		<description><![CDATA[By default vBulletin uses PHP to deal with attachment downloads. It means that to provide a file from forum attachments to a user PHP process reads it and then starts to output it. This would work OK if you don&#8217;t have too much users. But if you do, attachments downloads from PHP could become one of [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/03/vbulletin-attachments-downloads-optimization/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>AWK: how to get text which is between two strings</title>
		<link>http://supportex.net/2012/03/awk-text-between-two-lines/</link>
		<comments>http://supportex.net/2012/03/awk-text-between-two-lines/#comments</comments>
		<pubDate>Sat, 17 Mar 2012 11:32:51 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[awk]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2696</guid>
		<description><![CDATA[If you need to get some text which is in file between two lines you could use awk for this. You may need it while analyzing access logs to fix some issue, for instance. Here&#8217;s how you could do it: awk &#8216;/2012:00:20:49/, /2012:00:35/&#8217; access_log &#62; output It&#8217;s a simple and convenient way.]]></description>
		<wfw:commentRss>http://supportex.net/2012/03/awk-text-between-two-lines/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Apache: getting remote IP when working behind nginx</title>
		<link>http://supportex.net/2012/03/apache-remote-ip-behind-nginx/</link>
		<comments>http://supportex.net/2012/03/apache-remote-ip-behind-nginx/#comments</comments>
		<pubDate>Tue, 06 Mar 2012 14:26:12 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[Apache]]></category>
		<category><![CDATA[CentOS]]></category>
		<category><![CDATA[nginx]]></category>
		<category><![CDATA[rpaf]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2680</guid>
		<description><![CDATA[Sometimes you may want to use Apache behind nginx. In this case nginx works as reverse proxy and handles user connections and static files. And Apache generates dynamic content (for instance, with use of PHP). In this case remote IP in your scripts would be 127.0.0.1 since Apache gets requests from the same server. It [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/03/apache-remote-ip-behind-nginx/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>LEMP: disabling PHP functions</title>
		<link>http://supportex.net/2012/02/lemp-disabling-php-functions/</link>
		<comments>http://supportex.net/2012/02/lemp-disabling-php-functions/#comments</comments>
		<pubDate>Sun, 26 Feb 2012 13:54:31 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[php]]></category>
		<category><![CDATA[suhosin]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2671</guid>
		<description><![CDATA[Let&#8217;s consider typical LEMP stack: Linux nginx php-fpm MySQL server For security reasons you might want to disable some dangerous functions like exec or system.  As you may know, you can do this by adding list of function to disable_functions parameter in your php.ini. At the same time php-fpm allows to limit PHP parameters per pool. [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/02/lemp-disabling-php-functions/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>MySQL: how to fix &#8216;ERROR 2006 (HY000) at line ##: MySQL server has gone away&#8217;</title>
		<link>http://supportex.net/2012/02/mysql-fix-error-2006-hy000-line-mysql-server-away/</link>
		<comments>http://supportex.net/2012/02/mysql-fix-error-2006-hy000-line-mysql-server-away/#comments</comments>
		<pubDate>Fri, 24 Feb 2012 17:06:34 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[mysql]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2661</guid>
		<description><![CDATA[If you get mentioned error while restoring big database, make sure you have enough size of max_allowed_packet. [mysqld] max_allowed_packet=64M After adding it to your /etc/my.cnf restart MySQL server to apply changes.]]></description>
		<wfw:commentRss>http://supportex.net/2012/02/mysql-fix-error-2006-hy000-line-mysql-server-away/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>MySQL: ERROR 1005 (HY000) at line 14: Can&#8217;t create table &#8216;example.tbl&#8217; (errno: 150)</title>
		<link>http://supportex.net/2012/02/mysql-error-1005-hy000-line-14-create-table-database-table-errno-150/</link>
		<comments>http://supportex.net/2012/02/mysql-error-1005-hy000-line-14-create-table-database-table-errno-150/#comments</comments>
		<pubDate>Fri, 10 Feb 2012 15:08:00 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[mysql]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2582</guid>
		<description><![CDATA[If you get an error ERROR 1005 (HY000) at line 14: Can&#8217;t create table example.tbl (errno: 150) it could be for at least two reasons. MySQL doesn&#8217;t allow to create foreign keys for  a set of tables one of which doesn&#8217;t exist. To solve this restriction you can set SET foreign_key_checks to 0: mysql&#62; SET [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/02/mysql-error-1005-hy000-line-14-create-table-database-table-errno-150/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>RPM: how to get changelog from package</title>
		<link>http://supportex.net/2012/01/rpm-changelog-package/</link>
		<comments>http://supportex.net/2012/01/rpm-changelog-package/#comments</comments>
		<pubDate>Tue, 31 Jan 2012 13:24:04 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[Fedora]]></category>
		<category><![CDATA[rpm]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2547</guid>
		<description><![CDATA[Often there&#8217;s a need to get changelog of RPM package. Here is a way to do that: [root@playground ~]# rpm -qp &#8211;changelog kernel-2.6.41.9-1.fc15.x86_64.rpm &#124; head * Fri Jan 13 2012 Josh Boyer &#60;jwboyer@redhat.com&#62; 2.6.41.9-1 - Linux 3.1.9 - CVE-2012-0045 kvm: syscall instruction induced guest panic (rhbz 773392) * Wed Jan 11 2012 Josh Boyer &#60;jwboyer@redhat.com&#62; [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/01/rpm-changelog-package/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>phpMyAdmin: how to use it with several MySQL servers</title>
		<link>http://supportex.net/2012/01/phpmyadmin-mysql-servers/</link>
		<comments>http://supportex.net/2012/01/phpmyadmin-mysql-servers/#comments</comments>
		<pubDate>Tue, 31 Jan 2012 13:23:41 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[phpMyAdmin]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2550</guid>
		<description><![CDATA[If you have several MySQL servers it makes sense to use one phpMyAmin to manage them.  To do it just add as many server as you need to config.inc.php. In Fedora and Centos it is located in /etc/phpMyAdmin/. Here&#8217;s an example: &#60;?php /* Servers configuration */ $i = 0; /* Server: localhost [1] */ $i++; [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/01/phpmyadmin-mysql-servers/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>nginx: Using fcgiwrap for CGI applications deployment</title>
		<link>http://supportex.net/2012/01/nginx-fcgiwrap-deployment-cgi-applications/</link>
		<comments>http://supportex.net/2012/01/nginx-fcgiwrap-deployment-cgi-applications/#comments</comments>
		<pubDate>Thu, 19 Jan 2012 22:09:41 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[Fedora]]></category>
		<category><![CDATA[nginx]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2519</guid>
		<description><![CDATA[From the box nginx doesn&#8217;t support CGI applications deployment since CGI is very old and poor performance way to run them. But some applications still should be deployed with use of CGI (earlier, we covered setup of Nagios and OTRS with nginx). Here is another way to do that. In this case we will use [...]]]></description>
		<wfw:commentRss>http://supportex.net/2012/01/nginx-fcgiwrap-deployment-cgi-applications/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Bind: how to get statistics information</title>
		<link>http://supportex.net/2011/11/bind-statistics-information/</link>
		<comments>http://supportex.net/2011/11/bind-statistics-information/#comments</comments>
		<pubDate>Tue, 29 Nov 2011 13:14:49 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>
		<category><![CDATA[bind]]></category>
		<category><![CDATA[named]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2419</guid>
		<description><![CDATA[To get statistics information about query numbers that Bind has served you need to add next line to configuration file: statistics-file &#8220;/var/stats/named.stats&#8221;; It should be added in a &#8216;global&#8217; options statement. After that you need to restart Bind and run: rndc stats Bind will dump statistics to this file. Note that if you run Bind [...]]]></description>
		<wfw:commentRss>http://supportex.net/2011/11/bind-statistics-information/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>munin: fixing &#8216;Can&#8217;t locate object method &#8220;new&#8221; via package &#8220;LWP::UserAgent&#8221; &#8216;</title>
		<link>http://supportex.net/2011/11/fixing-cant-locate-object-method-new-package-lwpuseragent/</link>
		<comments>http://supportex.net/2011/11/fixing-cant-locate-object-method-new-package-lwpuseragent/#comments</comments>
		<pubDate>Mon, 28 Nov 2011 13:19:42 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2411</guid>
		<description><![CDATA[If you get next message Can&#8217;t locate object method &#8220;new&#8221; via package &#8220;LWP::UserAgent&#8221; at /usr/share/munin/plugins/nginx_request line 106. when you are installing nginx plugins for munin in Debian, this means that you don&#8217;t have perl LWP library. Installing it fixes an issue: apt-get install liblwp-useragent-determined-perl After munin-mode restart munin will start to create graphs.]]></description>
		<wfw:commentRss>http://supportex.net/2011/11/fixing-cant-locate-object-method-new-package-lwpuseragent/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Migrating Nagios from Apache to Nginx</title>
		<link>http://supportex.net/2011/11/migration-nagios-apache-nginx/</link>
		<comments>http://supportex.net/2011/11/migration-nagios-apache-nginx/#comments</comments>
		<pubDate>Wed, 23 Nov 2011 12:10:12 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2275</guid>
		<description><![CDATA[Nagios is powerful monitoring software. And like OTRS in most cases it&#8217;s used with Apache. But sometimes you might want to use it with nginx. Here is a simple way to do that. Actually it&#8217;s very similar to launching OTRS with nginx &#8211; in both ways we use Perl FastCGI wrapper. I assume that you [...]]]></description>
		<wfw:commentRss>http://supportex.net/2011/11/migration-nagios-apache-nginx/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Trac: fixing &#8216;Warning: Can&#8217;t synchronize with repository &#8220;(default)&#8221; (Unsupported version control system &#8220;svn&#8221;: No module named svn).&#8217;</title>
		<link>http://supportex.net/2011/11/trac-fixing-warning-synchronize-repository-default-unsupported-version-control-system-svn-module-named-svn/</link>
		<comments>http://supportex.net/2011/11/trac-fixing-warning-synchronize-repository-default-unsupported-version-control-system-svn-module-named-svn/#comments</comments>
		<pubDate>Wed, 23 Nov 2011 12:02:23 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2397</guid>
		<description><![CDATA[If you get a message &#8216;Warning: Can&#8217;t synchronize with repository &#8220;(default)&#8221; (Unsupported version control system &#8220;svn&#8221;: No module named svn). Look in the Trac log for more information&#8217; while setting up or migrating you Trac, it means that you don&#8217;t have SVN library for Python installed. Note that Trac uses subversion-python package and not pysvn. [...]]]></description>
		<wfw:commentRss>http://supportex.net/2011/11/trac-fixing-warning-synchronize-repository-default-unsupported-version-control-system-svn-module-named-svn/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Migrating OTRS from Apache to Nginx</title>
		<link>http://supportex.net/2011/11/migrating-otrs-apache-nginx/</link>
		<comments>http://supportex.net/2011/11/migrating-otrs-apache-nginx/#comments</comments>
		<pubDate>Mon, 07 Nov 2011 13:11:00 +0000</pubDate>
		<dc:creator>Oleksii Tykhonov</dc:creator>
				<category><![CDATA[supportex.net-blog]]></category>

		<guid isPermaLink="false">https://supportex.net/?p=2270</guid>
		<description><![CDATA[Installing OTRS on Fedora is quite easy considering it has pre-built RPM packages and clean documentation. Usually OTRS is used with Apache. It&#8217;s stable well-tested solution. But what to do if you have nginx and you don&#8217;t want to have Apache? An issue becomes more complicated considering that nginx doesn&#8217;t support CGI from a box, [...]]]></description>
		<wfw:commentRss>http://supportex.net/2011/11/migrating-otrs-apache-nginx/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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