6.3

Table Of Contents
Adding High Availability to
vRealize Operations Manager 4
You can dedicate one vRealize Operations Manager cluster node to serve as a replica node for the
vRealize Operations Manager master node.
This chapter includes the following topics:
n
About vRealize Operations Manager High Availability,” on page 27
n
“Run the Setup Wizard to Add a Master Replica Node,” on page 28
About vRealize Operations Manager High Availability
vRealize Operations Manager supports high availability (HA). HA creates a replica for the
vRealize Operations Manager master node and protects the analytics cluster against the loss of a node.
With HA, data stored on the master node is always 100% backed up on the replica node. To enable HA, you
must have at least one data node deployed, in addition to the master node.
n
HA is not a disaster recovery mechanism. HA protects the analytics cluster against the loss of only one
node, and because only one loss is supported, you cannot stretch nodes across vSphere clusters in an
aempt to isolate nodes or build failure zones.
n
When HA is enabled, the replica can take over all functions that the master provides, were the master to
fail for any reason. If the master fails, failover to the replica is automatic and requires only two to three
minutes of vRealize Operations Manager downtime to resume operations and restart data collection.
When a master node problem causes failover, the replica node becomes the master node, and the cluster
runs in degraded mode. To get out of degraded mode, take one of the following steps.
n
Return to HA mode by correcting the problem with the master node, which allows
vRealize Operations Manager to congure the node as the new replica node.
n
Return to HA mode by converting a data node into a new replica node and then removing the old,
failed master node. Removed master nodes cannot be repaired and re-added to
vRealize Operations Manager.
n
Change to non-HA operation by disabling HA and then removing the old, failed master node.
Removed master nodes cannot be repaired and re-added to vRealize Operations Manager.
n
In the administration interface, after an HA replica node takes over and becomes the new master node,
you cannot remove the previous, oine master node from the cluster. In addition, the previous node
continues to be listed as a master node. To refresh the display and enable removal of the node, refresh
the browser.
VMware, Inc.
27