Managing Serviceguard 11th Edition, Version A.11.16, Second Printing June 2004

Building an HA Cluster Configuration
Managing the Running Cluster
Chapter 5238
• Check the cluster membership on the map or tree to verify that
the node has left the cluster. In Serviceguard Manager, open the
map or tree or Cluster Properties. On the command line, use the
cmviewcl command.
• Start the node. In Serviceguard Manager use the Run Node
command. On the command line, use the cmrunnode command.
• To verify that the node has returned to operation, check the
Serviceguard Manager map or tree, or use the cmviewcl
command again.
4. Bring down the cluster. In Serviceguard Manager, use the Halt
Cluster command. On the command line, use the cmhaltcl -v -f
command.
Additional cluster testing is described in the “Troubleshooting” chapter.
Refer to Appendix A for a complete list of Serviceguard commands. Refer
to the Serviceguard Manager Help for a list of Serviceguard
Administrative commands.
Preventing Automatic Activation of Volume Groups
It is important to prevent LVM volume groups that are to be used in
packages from being activated at system boot time by the /etc/lvmrc
file. To ensure that this does not happen, edit the /etc/lvmrc file on all
nodes. Set AUTO_VG_ACTIVATE to 0, then include all the volume groups
that are not cluster bound in the custom_vg_activation function.
Volume groups that will be used by packages should not be included
anywhere in the file, since they will be activated and deactivated by
control scripts.
NOTE The root volume group does not need to be included in the
custom_vg_activation function, since it is automatically activated
before the /etc/lvmrc file is used at boot time.