Managing Serviceguard 13th Edition, February 2007

Cluster and Package Maintenance
Reconfiguring a Cluster
Chapter 7 329
NOTE If you add a node to a running cluster that uses VERITAS CVM disk
groups (on systems that support CVM), the disk groups will be available
for import when the node joins the cluster. To add a node to the cluster, it
must already have connectivity to the disk devices for all CVM disk
groups.
Deleting Nodes from the Configuration While the Cluster is
Running
From the System Management Homepage (SMH) choose Tools ->
Serviceguard Manager, then select the cluster and choose
Configuration -> Edit Cluster... -> Nodes. Uncheck the boxes of
nodes you want to remove. The following restrictions apply:
• The node must be halted. See “Removing Nodes from Participation in
a Running Cluster” on page 315.
• If you are using the management-station version of Serviceguard
Manager (rather than the plug-in version that runs under the
System Management Homepage) you cannot delete the session
server node.
• If the node you want to delete is unreachable (disconnected from the
LAN, for example), you can delete the node only if there are no
packages which specify the unreachable node. If there are packages
that depend on the unreachable node, halt the cluster or use
Serviceguard commands as described in the next section.
Using Serviceguard Commands to Delete Nodes from the
Configuration While the Cluster is Running Use the following
procedure to delete a node with HP-UX commands. In this example,
nodes ftsys8, ftsys9 and ftsys10 are already configured in a running
cluster named cluster1, and you are deleting node ftsys10.
NOTE If you want to remove a node from the cluster, issue the cmapplyconf
command from another node in the same cluster. If you try to issue the
command on the node you want removed, you will get an error message.