MCSG: Adding a node checklist

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