Managing Serviceguard Fifteenth Edition, reprinted May 2008

Building an HA Cluster Configuration
Managing the Running Cluster
Chapter 5 269
You can use these commands to test cluster operation, as in the
following:
1. If the cluster is not already running, start it. From the Serviceguard
Manager menu, choose Run Cluster. From the command line, use
cmruncl -v.
By default, cmruncl will check the networks. Serviceguard will probe
the actual network configuration with the network information in
the cluster configuration. If you do not need this validation, use
cmruncl -v -w none instead, to turn off validation and save time
2. When the cluster has started, make sure that cluster components are
operating correctly. you can use Serviceguard Manager to do this, or
use the command cmviewcl -v.
Make sure that all nodes and networks are functioning as expected.
For more information, see Chapter 7, “Cluster and Package
Maintenance,” on page 329.
3. Verify that nodes leave and enter the cluster as expected using the
following steps:
• Halt the node. You can use Serviceguard Manager or use the
cmhaltnode command.
• Check the cluster membership to verify that the node has left the
cluster. You can do this in Serviceguard Manager, or use the
cmviewcl command.
• Start the node. You can use Serviceguard Manager or use the
cmrunnode command.
• To verify that the node has returned to operation, check in
Serviceguard Manager, or use the cmviewcl command again.
4. Bring down the cluster. You can do this in Serviceguard Manager, or
use the cmhaltcl -v -f command.
Additional cluster testing is described in See “Troubleshooting Your
Cluster” on page 405. Refer to Appendix A for a complete list of
Serviceguard commands. Refer to the Serviceguard Manager Help for a
list of Serviceguard Administrative commands.