Pacemaker Resources and groups are which need to be highly available across multiple nodes in a cluster to provide high-availability for any services.
How to add additional nodes to the existing pacemaker Linux clusters. By adding nodes we can increase the resources of a cluster.
How to manage a Pacemaker Linux Cluster from web graphical interface (Pacemaker Web UI) by creating a new cluster or by adding an existing cluster.
The Pacemaker is a high-availability cluster resource manager it will run on all the hosts which we suppose to use in the cluster to make sure our services up and running to reduce the downtime.