Adding A Gulm Client-Only Member; Deleting A Gulm Client-Only Member - Red Hat ENTERPRISE LINUX 4 - ADMINISTRATION Manual

Chapter 5. Configuring Red Hat Cluster With system-config-cluster
Note
Make sure to configure other parameters that may be affected by changes in this section.
Section 5.1, "Configuration
Refer to

5.5.4. Adding a GULM Client-only Member

The procedure for adding a member to a running GULM cluster depends on the type of GULM node:
either a node that functions only as a GULM client (a cluster member capable of running applications,
but not eligible to function as a GULM lock server) or a node that functions as a GULM lock server.
This procedure describes how to add a member that functions only as a GULM client. To add a
member that functions as a GULM lock server, refer to
Lock Server Member".
To add a member that functions only as a GULM client to an existing cluster that is currently in
operation, follow these steps:
1. At one of the running members, start system-config-cluster (refer to
the Cluster Configuration
configure fencing for it as in
2. Click Send to Cluster to propagate the updated configuration to other running nodes in the
cluster.
3. Use the scp command to send the updated /etc/cluster/cluster.conf file from one of the
existing cluster nodes to the new node.
4. Start cluster services on the new node by running the following commands in this order:
a. service ccsd start
b. service lock_gulmd start
c. service clvmd start, if CLVM has been used to create clustered volumes
d. service gfs start, if you are using Red Hat GFS
e. service rgmanager start, if the cluster is running high-availability services (rgmanager)
5. At system-config-cluster, in the Cluster Configuration Tool tab, verify that the
configuration is correct. At the Cluster Status Tool tab verify that the nodes and services are
running as expected.
Note
Make sure to configure other parameters that may be affected by changes in this section.
Section 5.1, "Configuration
Refer to

5.5.5. Deleting a GULM Client-only Member

The procedure for deleting a member from a running GULM cluster depends on the type of member to
be removed: either a node that functions only as a GULM client (a cluster member capable of running
60
Tasks".
Tool"). At the Cluster Configuration Tool tab, add the node and
Section 5.5.1, "Adding a Member to a New
Tasks".
Section 5.5.6, "Adding or Deleting a GULM
Cluster".
Section 5.2, "Starting