Managing Serviceguard 11th Edition, Version A.11.16, Second Printing June 2004

Cluster and Package Maintenance
Managing the Cluster and Nodes
Chapter 7294
Adding Previously Configured Nodes to a Running
Cluster
You can use Serviceguard Manager or Serviceguard commands to bring a
configured node up within a running cluster.
Using Serviceguard Manager to Add a Configured Node to the
Cluster
Select the node icon, then right-click to display the action menu. Select
“Run node <hostname>.” The progress window shows messages as the
action takes place. This will also start any packages that are eligible to
run on the node. Click OK on the progress window when the operation is
complete.
Using Serviceguard Commands to Add Previously Configured
Nodes to a Running Cluster
Use the cmrunnode command to add one or more nodes to an already
running cluster. Any node you add must already be a part of the cluster
configuration. The following example adds node ftsys8 to the cluster
that was just started with only nodes ftsys9 and ftsys10:
# cmrunnode -v ftsys8
By default, cmruncl will do network validation, making sure the actual
network setup matches the configured network setup. This is the
recommended method. If you have recently checked the network and find
the check takes a very long time, you can use the -w none option to
bypass the validation.
Since the node's cluster is already running, the node joins the cluster and
packages may be started. If the node does not find its cluster running, or
the node is not part of the cluster configuration, the command fails.
Removing Nodes from Operation in a Running
Cluster
You can use Serviceguard Manager or HP-UX commands to remove
nodes from operation in a cluster. This operation removes the node from
cluster operation by halting the cluster daemon, but it does not modify
the cluster configuration. To remove a node from the cluster
configuration permanently, you must recreate the cluster configuration
file. See the next section.