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March 2, 2022 – 2:00 pm

Books have been written on the subject of awk and sed. Here’s a small sample of commands I put together over the years that are useful for everyday system administration tasks. Most of these tasks …

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Articles in Apache

Visualizing Apache Logs with Logstalgia

December 4, 2014 – 12:01 am
Visualization

The Logstalgia is a cool graphical utility for visualizing the Apache access_log files. The practical value of Logstalgia is debatable, but it’s entertainment value is not in question. The managers and NOC operators can stare …

Block WordPress Attackers With IPTables

September 23, 2014 – 3:56 pm
apache_logo

After installing LogStash, I noticed server load went from around 1.2 to 50+. This was cause by a brute-force attack against WordPress wp-login.php from some IP in France (of all places). While LogStash should not …

PHP Unable to allocate memory for pool

September 9, 2014 – 10:57 pm
apache

The following error may be found in /var/log/httpd/${domain}/error_log when APC memory is set too low: “PHP Warning: require_once(): Unable to allocate memory for pool”. APC is Alternative PHP Cache. You can check the version of …

Installing GoAccess on CentOS/RHEL

June 24, 2014 – 11:02 am
goaccess_01

GoAccess is a simple but useful “top”-like CLI utility giving you a quick overview of the Apache access_log entries.

SEO for Unix Geeks

February 21, 2013 – 11:45 pm
Traffic light for bikes.

So, you are finally done with your new shiny Web site and looking for ecom site integration. Congratulations. There is one small problem: the only two visitors to the site are you and Googlebot. And …

Restart Apache, MySQL When Low on Memory

June 25, 2009 – 4:27 am
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Heavy traffic, hungry SQL queries, leaky applications will eventually leave your server low on memory. Apache will go on a hunt for swap space and MySQL will start freezing in thoughtful contemplation. Your hard drives …

Apache and Multiple Domains – from Home

June 10, 2008 – 5:15 pm
apache

Apparently there are folks out there who are still interested in running their own Web server from home. More than that – they want to have multiple domains. Guys, Web hosting these days is so …

Install PHP, Mysql, Apache2 on Solaris 9

November 21, 2005 – 11:05 am
apache

A sample procedure for installing PHP, MySQL and Apache2 on Solaris 9.

Apache MySQL PHP Solaris 8 Installation

November 21, 2005 – 11:03 am
di-logo-solaris-orange

A sample procedure for installing PHP, MySQL and Apache2 on Solaris 8.