Upgrading HA nodes

The HA upgrade process is to update each node in the cluster individually by running the installation program and allowing it to perform an update of the installed software. This process of installing HA clusters is documented in Installing BMC Atrium Single Sign-On as a High Availability cluster. The overall process is similar to a new cluster installation in that a cluster configuration file is created when you upgrade the first node. This cluster configuration file is used when you upgrade the subsequent nodes. Essentially, the first upgraded node creates a new cluster and then each subsequent node that is upgraded is added to the new cluster.

To upgrade HA nodes

1. Ensure that the cluster is not being used.
2. Run the installation program, autorun on the first node.
   1. Provide the administrator password.
   2. Select First node of cluster upgrade and click Next
   3. Provide the location and file name for where you want the cluster configuration information saved and click Next.
      This cluster configuration file is needed when subsequent nodes are added to the cluster.

      Important

      This file contains sensitive information.

3. Copy the cluster configuration file to the computer that hosts the subsequent node.
4. Run the installation program, autorun on the subsequent node.
   1. Provide the administrator password.
   2. Select the Additional node of cluster upgrade option and click Next.
   3. Provide the location of the cluster configuration file (created during the first node upgrade).
5. For additional nodes, repeat steps 3 and 4.
6. (Optional) Add new nodes to the cluster by running the installation program on a computer which does not already contain a node. For more information about adding new nodes to the cluster, see Installing additional nodes for an HA cluster on a new Tomcat server or Installing additional nodes for an HA cluster on an external Tomcat server.