Updating the current cluster configuration

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You can upgrade your current cluster configuration.

About this task

To update the current cluster configuration, complete the following steps:

Procedure

  1. Check that all nodes in the cluster are up and running the same and most recent version of the PowerHA® SystemMirror® software. Check the IBM® website for the latest PowerHA SystemMirror APARs and PTFs available for the current version.

    To check cluster conditions and settings, complete the following steps:

    1. Use clstat to review the cluster state and to make certain that the cluster is in a stable state.
    2. Review the /etc/hosts file on each node to make certain it is correct.
    3. After AIX® Version 6.1.6, or later is installed, enter the fully qualified host name of every node in the cluster in the /etc/cluster/rhosts file. You must do this on each node in the cluster.
    4. Take a snapshot of a node in the cluster configuration.
    5. Ensure that each cluster node has its own PowerHA SystemMirror license. Otherwise, contact an IBM representative about licensing PowerHA SystemMirror.
    6. Ensure that you have privileges to perform the installation as the root user, or ask your system administrator to make the appropriate changes.
  2. Review the installation prerequisites and ensure that the system being upgraded meets these requirements.
  3. If needed, upgrade the AIX operating system and RSCT before upgrading PowerHA SystemMirror. Doing a migration installation of AIX leaves the existing licensed programs (LP) installed and eliminate the need to reinstall a previous version of PowerHA SystemMirror.