RHEL 7.1 HA Cluster Installation and Configuration

hi all

new to RHEL and have a task to build a 2-node HA cluster for an App. App will share /opt /var filesystems plus another (from ISCSI) for the App install itself.

Have been doing some reading but still need to understand few concepts:

Subscription: we are in the process of buying 2x new subscritpions including HA Add-on module;
Servers: virtual running under VMware 5.5U2 infrastructure
rhel7-node1.mydomain.local
rhel7-node2.mydomain.local
Storage: Dell Equallogic

My understanding (have been playing with CentOS7) is that I need to:

deploy both nodes, yum updates, etc....
Install iscsi-initiator-utils (to present a LUN from Eqaullogic to the servers),
Install device-mapper-multipath for multipathing,
Install pcs pacemaker (corosync) to setup/configure cluster,
Install fence-agents (I believe I will have to use vmware-soap fence agent or iSCSI),
Enable HA ports on firewalld daemon.

Do I need a separate heartbeat network between the 2x nodes, or just fencing (iSCSI or VMware)?

I know that this is pretty basic, so wondering whether you guys could provide more info, suggestions, etc so I can crack on with this

Thanks in advance for the assistance