MCSG: Adding a node checklistΒΆ

Title:MCSG: Adding a node checklist
Author:Douglas O’Leary <dkoleary@olearycomputers.com>
Description:MCSG: Adding a node checklist
Date created:07/2008
Date updated:08/2009
Disclaimer:Standard: Use the information that follows at your own risk. If you screw up a system, don’t blame it on me...

To add a node to a running cluster, do the following:

  1. Obtain a current cluster configuration file:

    cmgetconf current_config
    
  2. When going to a two node cluster, ensure at least one of the shared volume groups is activated.

  3. Create a generic configuration file:

    cmquerycl -v -C generic_config -n ${node1} -n ${node2} -n ${node3}
    NOTE: Ensure the generic_config file is different from the
    current_config
    
  4. Merge the two configuration files.

    1. Cluster modifications are in ${current_config}
    2. Cluster defaults are in ${generic_config}
  5. Check the configuration:

    cmcheckconf -C ${config}
    
  6. Apply the configuration:

    cmapplyconf -C ${config}
    
  7. Run the new cluster:

    cmruncl