Install PCS Services (Both nodes)

Install the PCS packages:

yum -y install pacemaker pcs resource-agents fence-agents-all
systemctl enable pcsd
systemctl enable corosync
systemctl enable pacemaker
systemctl start pcsd.service

Disable Managed Services (Both nodes)

Disable smb since this will be managed by pacemaker:

systemctl disable smb

Configure the Firewall (Both nodes)

Next configure the firewall for ha services:

firewall-cmd --zone=public --add-service=high-availability --permanent
firewall-cmd --reload

Change user password (Both nodes)

Change the password of the hacluster user (replace <password> with the chosen password):

echo <password> | passwd --stdin hacluster

Configuration (Only on one node!)

Next configure the names of the machines and the virtual IP address which will be shared in the cluster:

KE_HOST1=uk-acd-store1
KE_HOST2=uk-acd-store2

Cluster Configuration (Only on one node!)

Now configure the cluster and set some basic options - replace <password> with the chosen password:

pcs cluster auth ${KE_HOST1} ${KE_HOST2} -u hacluster -p <password> --force
pcs cluster setup --force --name portal ${KE_HOST1} ${KE_HOST2}
pcs cluster enable --all
pcs cluster start --all
pcs property set stonith-enabled=false
pcs property set no-quorum-policy=ignore
pcs resource defaults migration-threshold=1

Test

Check the results on both machines:

pcs status
 
# It might take a little time for the cluster to come online. Run the above command, until the cluster comes online on both nodes.
 
-->
 
Cluster name: portal
Stack: corosync
Current DC: uk-acd-store2 (version 1.1.16-12.el7_4.8-94ff4df) - partition with quorum
Last updated: Mon Mar 19 15:24:25 2018
Last change: Mon Mar 19 15:24:20 2018 by hacluster via crmd on uk-acd-store2

2 nodes configured
0 resources configured

Online: [ uk-acd-store1 uk-acd-store2 ]

No resources


Daemon Status:
  corosync: active/enabled
  pacemaker: active/enabled
  pcsd: active/enabled