By default CentOS 5 comes with PHP version 5.1. This is an ancient version of PHP and incompatible with modern Content Management Systems (CMS). This point is driven home with the recent release of WordPress 3.2 that requires a minimum of PHP 5.2.4. Because WordPress is such a popular CMS and CentOS such a popular web server operating system it seems like a good time to write about updating PHP to version 5.3.3 on CentOS 5.
linux
Apache optimization: KeepAlive On or Off?
Apache is the most widely used web server on the Internet. Knowing how to get the most out of Apache is very important for a systems administrator. Optimizing Apache is always a balancing act. It’s a case of sacrificing one resource in order to obtain savings in another.
Adding community repositories in YaST
YaST is the system configuration and software installation tool that comes with OpenSUSE Linux. You can use YaST to easily install, remove and update programs on your Linux system. YaST downloads software from various online repositories that keep collections of organized software. By default YaST only includes the official openSUSE repositories. But to install most software packages you will need to enable community repositories like the Packman repository. This is how you go about doing it.
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CPU load average history in Linux
CPU load average is a metric used to determine CPU usage in Linux. CPU load is a measure of the number of processes that are running as well processes that are waiting for CPU access. Tracking CPU load averages over a period of time can help system administrators diagnose the cause of server slowdowns.
Renewing your DHCP lease and IP address in Linux
DHCP is widely used to assign IP addresses to computers on a network. Most home Internet connections are assigned IPs via DHCP by the Internet Service Provider (ISP). If you are using Linux as your Operating System and want to force a renew of your DHCP lease/DHCP assigned IP address you can do so via the Linux command line.