Managing HP Serviceguard for Linux, Sixth Edition, August 2006

Cluster and Package Maintenance
Managing the Cluster and Nodes
Chapter 7242
Managing the Cluster and Nodes
Managing the cluster involves the following tasks:
• Starting the Cluster When All Nodes are Down
• Adding Previously Configured Nodes to a Running Cluster
• Removing Nodes from Operation in a Running Cluster
• Halting the Entire Cluster
• Reconfiguring a Halted Cluster
Starting the cluster means running the cluster daemon on one or more of
the nodes in a cluster. You use different Serviceguard commands to start
the cluster depending on whether all nodes are currently down (that is,
no cluster daemons are running), or whether you are starting the cluster
daemon on an individual node.
Note the distinction that is made in this chapter between adding an
already configured node to the cluster and adding a new node to the
cluster configuration. An already configured node is one that is already
entered in the cluster configuration file; a new node is added to the
cluster by modifying the cluster configuration file.
NOTE Manually starting or halting the cluster or individual nodes does not
require access to the quorum server, if one is configured. The quorum
server is only used when tie-breaking is needed following a cluster
partition.