Updating the Cluster Software

Red Hat Cluster Suite: Configuring and Managing a Cluster
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# 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.

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