Performing Scheduled Maintenance; Updating Plugins; Destroying A Cluster - Aruba Networks PowerConnect W Clearpass 100 Software Deployment Manual

A similar procedure can be used to rebuild the cluster in the event of a secondary node suffering a hardware
failure.

Performing Scheduled Maintenance

Routine maintenance tasks such as a server reboot or shutdown may occasionally be required for a server
that is part of a cluster.
These tasks may be performed by ensuring that the server is the secondary node in the cluster. If the
secondary node goes offline, the primary node will be unaffected and the cluster will continue to provide
network services without interruption. When the secondary node comes back online, the cluster will be
automatically rebuilt and replication will resume.
To check the current status of a node, log into that node and click the
the cluster status on the High Availability page. The node's current status is displayed under the Local
Status heading.
Use this procedure to make the current primary node the secondary node:
1. Log into the current secondary node of the cluster.
2. Click Cluster Maintenance, and then click the Swap Primary Server command link.
3. A progress meter is displayed while the primary node is switched. The cluster's virtual IP address will be
temporarily unavailable while the swap takes place.
4. The swap is complete. The secondary node is now the new primary node for the cluster. The cluster is
back in a fault-tolerant mode of operation.
5. Perform any required maintenance on the new secondary node.

Updating Plugins

Plugins cannot be updated while High Availability is running. Because exact synchronization of the two
servers is required for High Availability Services, you must first destroy the cluster, then re-create the
cluster after the plugins are updated. See
For information on updating plugins, see

Destroying a Cluster

The Destroy Cluster command link is used to shut down a cluster and return to independent nodes. Avoid
using this command when you are accessing the cluster using its virtual IP address, as the virtual IP address
will no longer be available when the cluster has been destroyed.
438 | High Availability Services
Destroying a Cluster and
Plugin Manager in the Administrator Tasks
Show details link displayed with
Cluster Setup in this chapter.
chapter.
ClearPass Guest 3.9 | Deployment Guide