After you configure your vCenter HA cluster, you can perform management tasks. These tasks include certificate replacement, replacement of SSH keys, and SNMP setup. You can also edit the cluster configuration to disable or enable vCenter HA, enter maintenance mode, and remove the cluster configuration.
Set Up SNMP Traps You can set up Simple Network Management Protocol (SNMP) traps to receive SNMP notifications for your vCenter HA cluster.
Set Up Your Environment to Use Custom Certificates The machine SSL certificate on each node is used for cluster management communication and for encryption of replication traffic. If you want to use custom certificates, you have to remove the vCenter HA configuration, delete the Passive and Witness nodes, provision the Active node with the custom certificate, and reconfigure the cluster.
Manage vCenter HA SSH Keys vCenter HA uses SSH keys for password-less authentication between the Active, Passive, and Witness nodes. The authentication is used for heartbeat exchange and file and data replication. To replace the SSH keys in the nodes of a vCenter HA cluster, you disable the cluster, generate new SSH keys on the Active node, transfer the keys to the passive node, and enable the cluster.
Initiate a vCenter HA Failover You can manually initiate a failover and have the Passive node become the Active node.
Edit the vCenter HA Cluster Configuration When you edit the vCenter HA cluster configuration, you can disable or enable the cluster, place the cluster in maintenance mode, or remove the cluster.
Perform Backup and Restore Operations For additional security, you can back up the Active node in the vCenter HA cluster. You can then restore the node in case of catastrophic failure.
Remove a vCenter HA Configuration You can remove a vCenter HA configuration from the vSphere Web Client. If you are using an Advanced configuration, or if any of the nodes are not discoverable, you might have to perform additional cleanup steps.
Reboot All vCenter HA Nodes If you have to shut down and reboot all nodes in the cluster, you must follow a specific shutdown order to prevent the Passive node from assuming the role of Active node.
Change the Appliance Environment When you deploy a vCenter Server Appliance, you select an environment. For vCenter HA, Small, Medium, Large, and X-Large are supported for production environments. If you need more space and want to change the environment, you have to delete the Passive node virtual machine before you change the configuration.
Collecting Support Bundles for a vCenter HA Node Collecting a support bundle from all the nodes in a vCenter HA cluster helps with troubleshooting.