Managing Serviceguard 12th Edition, March 2006

Building an HA Cluster Configuration
Managing the Running Cluster
Chapter 5 261
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. You can check configuration and
status information using Serviceguard Manager:
• You can see status information on the map. Failover packages are
shown on the map and tree, connected to the node where they are
running. Symbols for multi-node and system multi-node packages
are not shown on the map or tree; instead, their properties are in the
cluster properties, and their command menu is available when the
cluster symbol is selected.
• Configuration and status information is available from the property
sheets for cluster, nodes, and packages.
When you create or modify a package or cluster configuration, you can
start it running, and then save the session a Serviceguard Manager
(.sgm) file. This way, you can archive the package or cluster’s
configuration and healthy running behavior. The data in this file can be
compared with later versions of the cluster to understand the changes
that are made over time. It will be particularly useful in troubleshooting
to compare this file to a problem cluster.
In Serviceguard Manager, you can also use administration commands if
the Session Server node and the target node both have Serviceguard
version A.11.12 or later installed.
Checking Cluster Operation with Serviceguard
Commands
Serviceguard also provides several commands for control of the cluster: