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.