Red Hat CLUSTER SUITE - CONFIGURING AND MANAGING A CLUSTER 2006 Manual page 54

38 Chapter 3. Installing and Configuring Red Hat Cluster Suite Software
Managed Resources — Defines failover domains, resources, and services.
•
Failover Domains — Use this section to configure one or more subsets of cluster
•
nodes used to run a service in the event of a node failure. Failover domains are rep-
resented as subordinate elements under Failover Domains. Using configuration but-
tons at the bottom of the right frame (below Properties), you can create failover do-
mains (when Failover Domains is selected) or edit failover domain properties (when
a failover domain is selected).
Resources — Use this section to configure resources to be managed by the system.
•
Choose from the available list of file systems, IP addresses, NFS mounts and exports,
and user-created scripts and configure them individually. Resources are represented
as subordinate elements under Resources. Using configuration buttons at the bottom
of the right frame (below Properties), you can create resources (when Resources is
selected) or edit resource properties (when a resource is selected).
Services — Use this section to create and configure services that combine cluster
•
resources, nodes, and failover domains as needed. Services are represented as subor-
dinate elements under Services. Using configuration buttons at the bottom of the right
frame (below Properties), you can create services (when Services is selected) or edit
service properties (when a service is selected).
Warning
Do not manually edit the contents of the
ance from an authorized Red Hat representative or unless you fully understand the con-
sequences of editing the
Figure 3-2 shows the hierarchical relationship among cluster configuration components.
The cluster comprises cluster nodes. The cluster nodes are connected to one or more fenc-
ing devices. Nodes can be separated by failover domains to a cluster service. The services
comprise managed resources such as NFS exports, IP addresses, and shared GFS partitions.
The structure is ultimately reflected in the
ture. The Cluster Configuration Tool provides a convenient way to create and manipulate
the
/etc/cluster/cluster.conf
/etc/cluster/cluster.conf
/etc/cluster/cluster.conf
/etc/cluster/cluster.conf
file.
file without guid-
file manually.
XML struc-