In case your server mailqueue is full of messages you want to delete, most of google found instructions are not correct – there is no mailq for postfix anymore.
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Category Archives: Sysadmin - Page 4
Sysadmin: How to delete specific messages from postfix queue
Posted by admin
on 03/19/2014
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PHP Catchable fatal error: Object of class Savant2_Error could not be converted to string
Posted by admin
on 02/14/2014
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This was the tale of my last couple of days. One of our long time customers was moving a bunch of web sites from various web hosting providers to her dedicated server.
As usual there was all kinds of kinks and problems during her attempts to reconfigure her web sites. Some of her sites are using Savant template system and was showing unusual behavior – request to the front page was returning status 500 – server error and while content was displaying the design of the content was altered. Unable to figure out the problem she asked for help.
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Centos: How to run multiple mysql instances on a single server
Posted by admin
on 12/05/2013
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There are plenty instruction on how to run multiple mysql instances on a single server on various blogs. Most of them are based on the original mysql rpm package produced by Oracle (nowdays). In my opinion this could be unnecessary overhead when you have OS provided mysql server package and all you need to configure another instance is to slightly modify bundled configuration and init.d script.
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Sysadmin: how to configure nginx for Jelix PHP framework
Posted by admin
on 11/21/2013
4 comments
I had to migrate to nginx web server some web application written using Jelix PHP framework and I’ve hard a problem with Jelix URLs that look like http://domain.com/site/script.php/arg1/arg2/arg3. Originally Jelix requires “Options +MultiViews” and “AcceptPathInfo on” in Apache config, neither of which are available on nginx. It took a while to find proper solution.
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Rant: Why I would never have facebook account
Posted by admin
on 11/20/2013
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First of all – this is my opinion, it’s emotional, biased, personal and has nothing to do with you. If you are offended by my opinion – you are not required to read, agree with it or argue with me.
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Centos: How to fix cPanel update insufficient disk space
Posted by admin
on 11/20/2013
2 comments
There are certain situations when you can encounter such cPanel update error message.
In order to update cPanel has to download new files and packages to replace outdated. For this it requires about 1.8Gb of free space on /usr partition. What can you do to fix the problem if you get this error message ?
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Centos: cPanel update demands to upgrade MySQL
Posted by admin
on 11/14/2013
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I’ve hit cpanel update “blocker” the other day going from version 11.38 to 11.40.
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[20131113.193112] E Blocker found: Newer releases of cPanel & WHM are not compatible with your MySQL version: 5.0. Upgrade your MySQL server to a version greater or equal to 5.1 |
cPanel update demands to upgrade MySQL and would not take no for an answer – why?
MySQL version 5.1 hits end-of-life on December 2013 and even though Red Hat mysql 5.0 is different from vanilla version and has to be supported until the end of Centos 5 support, cPanel wants to cover all bases and we really don’t have a choice in the situation.
Now, what we should to to continue?
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Centos: how to install cpanel
Posted by admin
on 11/07/2013
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“Extremely friendly…widely used …de-facto industry standard” cPanel all this and more. And I dislike it as much as it popular (I’ll talk about it later).
What surprised me that cpanel.net web site does not contain the link to the installation instruction on it’s front page which should be only logical.
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Wordpress: how to trim your wp_options table
Posted by admin
on 10/24/2013
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In my line of work I am exposed to various Wordpress installations – different plug-in sets, different themes, various amount of content – so, I have my fair share of troubleshooting Wordpress performance issues related to almost anything.
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Centos: How to configure DKIM for sendmail on multiple domains
Posted by admin
on 10/21/2013
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I wanted to configure DKIM for sendmail on multiple domains for one of the dedicated servers and found out that there are no usable instructions for CentOS and few that are available are inconclusive (I will provide the list of information sources at the end of this post). Here is my tested working setup:
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