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 6.6, “ Disabling the Cluster Software”
Section 6.7, “ Diagnosing and Correcting Problems in a Cluster”
Note
While system-config-cluster provides several convenient tools for configuring and
managing a Red Hat Cluster, the newer, more comprehensive tool, Co n g a, provides more
convenience and flexibility than system-config-cluster. You may want to consider using
Co n g a instead (refer to Chapter 3, Configuring Red Hat Cluster With Conga and Chapter 4,
Managing Red Hat Cluster With Conga).
6.1. St art ing and St opping t he Clust er Soft ware
To start the cluster software on a member, type the following commands in this order:
1. service cman start
2. service clvmd start, if CLVM has been used to create clustered volumes
3. service gfs start, if you are using Red Hat GFS
4. service rgmanager start
To stop the cluster software on a member, type the following commands in this order:
1. service rgmanager stop
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 cman stop
Stopping the cluster services on a member causes its services to fail over to an active member.
6.2. Managing High-Availabilit y Services
You can manage cluster services with the Clu st er St at u s T o o l (Figure 6.1, “ Cluster Status Tool” )
through the Clu st er Man ag emen t tab in Cluster Administration GUI.
Red Hat Ent erprise Linux 5 Clust er Administ rat ion
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