• While I was working on the active/active iSCSI cluster, I began wondering if the same technology and concepts could be used to create a pair of active/active Apache/MySQL servers.  Turns out it can.  The primary issue to keep in mind is that in this setup, the potential exists for running 2 instances of both Apache and MySQL (actually MariaDB which is a drop-in replacement) on the same system.  So long as you have unique sockets (IP address + port) and the resources on each system to do so, that shouldn't be a problem.

  • If you run Red Hat Enterprise Linux and can't yet justify the cost of the Red Hat Satellite product, this post might be of interest to you.  Many admins in this situation will set up a local Red Hat yum repository and point all their systems at it for updates but in this scenario, how do you know what systems need what updates?