Freelance DevOps, Platform Engineering & Site Reliability Engineering
These are my old instructions for creating a Linux cluster with floating IP on versions of CentOS prior to 6.4.
If you’re using CentOS 6.4 or higher, you need my updated post for creating a cluster with CMAN and Pacemaker.
Continue reading “Creating a two-node CentOS 6 cluster with floating IP using Pacemaker and Corosync”Originally I was using Heartbeat to create two-node Linux clusters with floating IPs, but when Heartbeat stopped being developed I needed to figure out how to use Corosync and Pacemaker for this instead. Somewhat annoyingly, Linux HA stuff has changed yet again in CentOS 6.4, so now it’s necessary to use CMAN and Pacemaker instead.
This is quite a lot more in-depth than the simple configuration that was originally required for Heartbeat. Anyway, based on my recent experiences, here’s a very quick guide for if you find yourself in a similar situation. This works for me on CentOS 6.4 and higher, but it won’t work on earlier versions of CentOS.
Continue reading “How to create a two-node CentOS 6 cluster with floating IP using CMAN and Pacemaker”