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Pacemaker

Pacemaker provides a framework to manage the availability of resources. It's essentially the core component on a cluster that allows you to manage resource locations etc.

Installing

apt-get install pacemaker pcs resource-agents

yum install pacemaker pcs resource-agents

Configuration

Add all hosts related to the cluster to /etc/hosts (including the host you're on, also remove any reference to localhost/ 127.0.0.1)
Set password for hacluster user:
passwd hacluster
authorise the nodes to be included in the cluster:
pcs host auth node01.srv.world node02.srv.world

start services for cluster:

pcs cluster start --all

enable services:

pcs cluster enable --all

Verify installation is working and nodes are connected:

pcs cluster status

pcs status corosync

Deleting a cluster installation

pcs cluster stop --all

pcs cluster destroy --all
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