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KVM installation on CentOS

KVM(Kernel-based Virtual Machine) is a full virtualization software for linux. You can run multiple virtual server instances under one physical host. This allows you to seperate services and run them on different virtual machines.  The link to the project can be found here. Running virtual servers is often used to condense many physical machines into […]

6 years ago More
 

Setup and Optimize Zend OpCache

Zend OPCache: Zend OpCache is a caching engine that comes with PHP by default in later releases (PHP 5.5 and above).  It is a caching engine that stores precompiled php code in memory which ultimately results in performance increase as the code does not have to be fully recompiled on each new request.  The degree to […]

6 years ago More
 

Compiling PHP from source on CentOS

PHP is a  open source scripting language, commonly used for web development. The code is executed on the server before being displayed to clients unlike other languages like JavaScript.  PHP can also be used for command line actions as well and has a wide range of libraries and frameworks for it.  This guide is  how […]

6 years ago 3 More
 

using inotify-tools to trigger events

What are Inotify-tools? Inotify-tools is a C libary that interface with the inotify kernel function. Inotify-tools are available on kernels later than 2.6.13.  These tools can monitor or act based on file system events, this is particularly useful for scripting out actions you would like to happen if an event takes place. Install on Fedora […]

6 years ago More
 

Journalctl Introduction and Examples

journalctl was added into the  systemd release of CentOS 7 and has been part of Fedora since 17. It is a logging system for querying and printing messages form the journal. It can be used in with or replacing older logging services like rsyslogd. Journalct also uses highlighting for high priority messages in red and […]

6 years ago More
 

PHP 5.2 in cPanel easy apache 4

PHP 5.2 in removed from cPanel’s easy apache 4 for quite some time. However you can get it to run using a CGI handler.  This isn’t really recommended as newer versions of PHP offer both better performance and security when PHP 5.2 went end of life.  That said, certain old code wont work without and if […]

6 years ago 4 More
 

Disable WordPress Crontab and Run it Manually

By default WordPress runs wp-cron.php every time  someone visits your site. This causes increased load on the server each time a page is requested. On low traffic sites this really isnt noticeable but on higher traffic sites this can become problematic and cause increased load and resource consumption on the server. Turn off the WordPress […]

6 years ago More
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We love Linux and are dedicated to creating Linux administration tutorials for System Administrators since 2016.

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