How do I configure a 2 node high availability cluster on RHEL/Centos 7.6?
10 Mar, 2022
You will need pacemaker, corosync and pcs packages for making two node cluster in RHEL/CentOS 7 servers.
These packages or cluster components define as below:
is an open source cluster manager software which provide high
availability of resources or services in CentOS 7 or RHEL 7 Linux. It
has feature of scalable and advanced HA Cluster Manager. This HA cluster
manager distributed by ClusterLabs.
is the core of Pacemaker Cluster Manager as it is responsible for
generating heartbeat communication between cluster nodes which make it
capable of deploying High Availability in applications. Corosync is
derived from an Open Source project OpenAIS under new BSD License.
is a Pacemaker command line interface (CLI) and GUI for managing the
Pacemaker cluster. PCSD command pcs is use for creating, configuring and
adding a new node to cluster.
will like to read my tutorial which I have written in my blog on these
mentioned pacemaker cluster components installation and configuration
for building two nodes webserver basic cluster: