Installation guide

Chapter 6. Managing Red Hat Cluster With system-config-
cluster
This chapter describes various administrative tasks for managing a Red Hat Cluster and consists of the
following sections:
Section 6.1, “Starting and Stopping the Cluster Software”
Section 6.2, “Managing High-Availability Services”
Section 6.4, “Backing Up and Restoring the Cluster Database”
Section 6.5, “Disabling the Cluster Software”
Section 6.6, “Diagnosing and Correcting Problems in a Cluster”
6.1. Starting and Stopping the Cluster Software
To start the cluster software on a member, type the following commands in this order:
1. service ccsd start
2. service cm an start (or service lock_gulm d start for GULM clusters)
3. service fenced start (DLM clusters only)
4. service clvmd start, if CLVM has been used to create clustered volumes
5. service gfs start, if you are using Red Hat GFS
6. service rgm anager start, if the cluster is running high-availability services (rgm anager)
To stop the cluster software on a member, type the following commands in this order:
1. service rgm anager stop, if the cluster is running high-availability services (rgm anager)
2. service gfs stop, if you are using Red Hat GFS
3. service clvmd stop, if CLVM has been used to create clustered volumes
4. service fenced stop (DLM clusters only)
5. service cman stop (or service lock_gulmd stop for GULM clusters)
6. service ccsd stop
Stopping the cluster services on a member causes its services to fail over to an active member.
6.2. Managing High-Availability Services
You can manage cluster services with the Cluster St atus T ool (Figure 6.1, “Cluster Status T ool”)
through the Cluster Management tab in Cluster Administration GUI.
Chapter 6. Managing Red Hat Cluster With system-config-cluster
75