Managing HP Serviceguard for Linux, Sixth Edition, August 2006

Building an HA Cluster Configuration
Managing the Running Cluster
Chapter 5172
Managing the Running Cluster
This section describes some approaches to routine management of the
cluster. Additional tools and suggestions are found in Chapter 7, “Cluster
and Package Maintenance.”
Checking Cluster Operation with Serviceguard
Manager
Serviceguard Manager lets you see all the nodes and packages within a
cluster and displays their current status. Refer to the section on “Using
Serviceguard Manager” in Chapter 7. The following are suggested using
Serviceguard Manager:
• Ensure that all configured nodes are running.
• Check that all configured packages are running, and running on the
correct nodes.
• Ensure that the settings on the property sheets for cluster, nodes,
and packages are correct.
When you are sure the cluster is correctly configured, save a copy of the
configuration data in a file for archival purposes. The data in this file can
be compared with later versions of the cluster to understand the changes
that are made over time.
Checking Cluster Operation with Serviceguard
Commands
Serviceguard also provides several commands for control of the cluster:
• cmviewcl checks status of the cluster and many of its components. A
non-root user with the role of Monitor can run this command from a
cluster node or see status information in Serviceguard Manager.
• cmrunnode is used to start a node. A non-root user with the role of
Full Admin, can run this command from a cluster node or through
Serviceguard Manager.