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Chapter 14: System Maintenance
232
Upgrading a Cluster
To upgrade a CC-SG cluster, follow this recommended upgrade
procedure. Only physical CC-SG units can be in a cluster.
A CC-SG cluster license is a special kind of license file that the 2 CC-SG
units in the cluster share. See Cluster Licenses (on page 261) for
details.
If the upgrade of your primary node fails while following this procedure,
see Primary Node Upgrade Failure (on page 233).
To upgrade a cluster:
1. Force a failover from your primary node to the backup node by
choosing Administration > Cluster Configuration. In the Configuration
tab, click Switch Primary and Backup. See Switch the Primary and
Secondary Node Status (on page 259) for details.
Your backup node becomes Primary. Your former primary node
goes into Waiting status.
2. In your new primary node, shutdown the CC-SG application by
choosing System Maintenance > Shutdown.
When you shutdown the CC-SG application, the unit is still
powered on, and accessible through the Diagnostic Console.
See CC-SG Shutdown (on page 234) for details.
3. Restart the former primary node, that has been in Waiting status.
See Restart CC-SG with Diagnostic Console (on page 315) for
details on restarting.
The restarted CC-SG unit goes into Primary status again. The
backup node that you shutdown is recognized as Failed status.
4. Delete the cluster by choosing Administration > Cluster
Configuration. Click Delete Cluster.
5. Enter Maintenance Mode, and then upgrade the primary node. See
Entering Maintenance Mode (on page 222) and Upgrading CC-SG
(on page 229).
6. If the primary node upgrade succeeds, perform a factory reset of the
backup node by accessing the Diagnostic Console and choosing
Operation > Admin > Factory Reset > Full CC-SG Database Reset
option. See Reset CC-SG Factory Configuration (on page 319).
If the primary node upgrade fails, see Primary Node Upgrade
Failure (on page 233).
7. Upgrade the backup node that you reset. See Upgrading CC-SG
(on page 229).
8. Recreate the cluster. See Create a Cluster (on page 257). The data
from the primary node synchronizes with the backup node.