The Apache expires module, also known as mod_expires, allows you to fine tune “Expires” and “Cache-Control” HTTP headers sent with files served by Apache. These HTTP headers provide information for browsers and caching proxy servers on how long to cache content served by Apache.
Linux server administration
Log rotation in CentOS Linux
Lots of daemons running in CentOS Linux create their own log files. These log files contain helpful messages pertaining to the operation of those daemons. For example error messages that help in diagnosing problems with the system. Over time these log files have to be rotated so that they are easier to manage. Log rotation is the process of splitting large log files and archiving old log files for future reference. In CentOS a program called logrotate is responsible for rotating log files. In this post I look at how to customize the operation of logrotate.
Apache MaxClients
Apache web server has a configuration option called MaxClients. MaxClients determines the maximum number of concurrent connections that Apache will service.
Linux DNS server query tools
Linux has a few Domain Name System (DNS) server query tools that you can access via the command line. You can use these tools to test whether your domain name’s authoritative nameservers are responding correctly or not. Using them you can diagnose problems with DNS records.
How to use free dns.he.net for slave DNS nameserver hosting
Hurricane Electric is an Internet bandwidth provider of some repute. Recently it started offering free DNS hosting via its site at dns.he.net. In this article I look at how you can use HE’s DNS hosting to add redundant slave nameservers for your domain name.