While vSphere HA can cover for host failures and restart the vCenter VM onto a different host, up until the release of VCHA with vSphere 6.5, there was no method to cover for vCenter service outages since the discontinuation of vCenter heartbeat.
vCenter HA is a quorum-based distributed application cluster, which maintains a passive clone of the vCenter, and a witness node, which acts as a quorum.
In vSphere 6.7, the VCHA workflow has been further simplified, and with vCenter 6.7 Update 1, the VCHA workflow is now available in the HTML5 client.
In this recipe, we will learn how to configure VCHA.