Configuring Corosync
Once Corosync and Pacemaker are installed, we only need to modify a single configuration file to activate them. As we've mentioned earlier and shown in the introduction diagram, Corosync is the conduit that Pacemaker uses for communication. Corosync also binds itself to services that rely on its channels, so it will also launch Pacemaker on our behalf.
This recipe will explain how to create a simple configuration for Corosync that will establish a secure Pacemaker cluster.
Getting ready
We have already installed everything we need, but if we are running a Debian-based system such as Ubuntu or Mint, we have one more step. Before Corosync will work properly, we need to enable its startup script. Open the /etc/default/corosync
Get PostgreSQL 9 High Availability Cookbook now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
