MCSG: Rebuilding a clusterΒΆ

Title:MCSG: Rebuilding a cluster
Author:Douglas O’Leary <dkoleary@olearycomputers.com>
Description:MCSG: Rebuilding a cluster
Date created:06/2007
Date updated:07/2008
Disclaimer:Standard: Use the information that follows at your own risk. If you screw up a system, don’t blame it on me...

To completely rebuild a cluster from scratch, do the following:

  1. Halt the cluster:

    cmhaltcl -f
    
  2. On all nodes:

    rm /etc/cmcluster/*
    
  3. On a two node cluster, enable at least one of the volume groups used for packages. This volume group will be used for the lock disk.

    vgchange -c n ${vg}
    vgchange -a y ${vg}
    
  4. Generate a cluster configuration script.

    cmquerycl -C ${config} -v -n ${node1} ... -n ${node#}
    cmgetconf -c ${cluster} > ${config}
    
  5. Edit the configuration file as appropriate:

    cmcheckconf -C ${config}
    cmapplyconf -C ${config}