8.7. Updating the Cluster Software

To update the cluster software while minimizing service downtime, follow these steps:

1. Stop the cluster software on the first member to be upgraded by clicking Cluster => Stop Local Cluster Daemons from the Cluster Status Tool. Alternatively, run the following command at a shell prompt:

   /sbin/service clumanager stop

2. Make a copy of the cluster configuration file. For example, to save the file to the /root directory, run the following command:

   cp /etc/cluster.xml /root/

3. Upgrade the cluster packages using the steps outlined in Section 3.1 Installing the Red Hat Cluster Suite Packages.

4. Copy the configuration file you saved back to the /etc/ directory.

   cp /root/cluster.xml /etc/

5. Start the cluster software on the updated cluster system by clicking Cluster => Start Local Cluster Daemons from the Cluster Status Tool. Alternatively, run the following command at a shell prompt:

   /sbin/service clumanager start

6. Repeat steps 1 - 5 for each cluster member to be updated.