SMS HA Administration Concepts and Planning
The most important aspects of the SMS HA cluster are the heartbeat connection and database replication. Periodically, verify that both activities are performing as expected. If you need to upgrade SMS software or apply an SMS patch, you must break apart the cluster and upgrade, or patch, each of the two SMS HA cluster nodes independently. The reason for this is that one of the nodes is always passive and therefore the SMS software is not fully operational and cannot be upgraded or patched. If you need to perform maintenance on the active SMS server, for example to swap out a network card, you can invoke a failover on the active node, which deactivates it and activates the passive SMS server. Once deactivated you can take the node offline, power it off, and perform maintenance on it.
HA Cluster Status
In the HA Cluster Status area of the High Availability screen, you can view the current status of the SMS HA cluster, view the management IP address and network of the SMS cluster. As well, you can configure and set up a new SMS HA cluster.
SMS monitors the needs to synchronize the cluster nodes. In typical operations, you will not need to synchronize, however when you manually failover a cluster node or take offline one of the nodes, you need to resynchronize the SMS cluster.
- Log in to the SMS from a client.
- On the SMS toolbar, navigate to the Admin option.
- In the HA Cluster Status area, click Synchronize.
- In the dialog box, choose to include, or not include, historical event data in the synchronization. Select the synchronization source, either the default source which is the most recent active SMS server (before failure) or specify another source from the drop-down list.
Reference: SMS User Guide