Managing Serviceguard Eighteenth Edition, September 2010

7 Cluster and Package Maintenance
This chapter describes how to see cluster configuration and status information, how
to start and halt a cluster or an individual node, how to perform permanent
reconfiguration, and how to start, halt, move, and modify packages during routine
maintenance of the cluster. Topics are as follows:
• Reviewing Cluster and Package Status
• Managing the Cluster and Nodes (page 341)
• Managing Packages and Services (page 350)
• Reconfiguring a Cluster (page 359)
• “Configuring a Legacy Package” (page 375)
• Reconfiguring a Package (page 385)
• Responding to Cluster Events (page 397)
• Removing Serviceguard from a System (page 398)
Reviewing Cluster and Package Status
You can check status using Serviceguard Manager or from a cluster node’s command
line.
Reviewing Cluster and Package Status with the cmviewcl Command
Information about cluster status is stored in the status database, which is maintained
on each individual node in the cluster. You can display information contained in this
database by means of the cmviewcl command: cmviewcl -v
NOTE: This section provides examples of the information you can obtain from
cmviewcl; for complete details, see the manpages cmviewcl(1m) and cmviewcl(5).
Note that the -f line option provides information not available with other options.
You can use the cmviewcl command without root access; in clusters running
Serviceguard version A.11.16 or later, grant access by assigning the Monitor role to the
users in question. In earlier versions, allow access by adding <nodename>
<nonrootuser> to the cmclnodelist file.
cmviewcl -v displays information about all the nodes and packages in a running
cluster, together with the settings of parameters that determine failover behavior.
Reviewing Cluster and Package Status 321