Installation guide

Fig u re 1.8. Accessin g Co n f ig u rat io n In f o rmat io n
The cluster configuration file (/etc/cluster/cluster.conf) is an XML file that describes the
following cluster characteristics:
Cluster name — Displays the cluster name, cluster configuration file revision level, and basic
fence timing properties used when a node joins a cluster or is fenced from the cluster.
Cluster — Displays each node of the cluster, specifying node name, node ID, number of quorum
votes, and fencing method for that node.
Fence Device — Displays fence devices in the cluster. Parameters vary according to the type of
fence device. For example for a power controller used as a fence device, the cluster configuration
defines the name of the power controller, its IP address, login, and password.
Managed Resources — Displays resources required to create cluster services. Managed
resources includes the definition of failover domains, resources (for example an IP address), and
services. Together the managed resources define cluster services and failover behavior of the
cluster services.
1.4 . High-availabilit y Service Management
High-availability service management provides the ability to create and manage high-availability
cluster services in a Red Hat cluster. The key component for high-availability service management in
a Red Hat cluster, rgmanager, implements cold failover for off-the-shelf applications. In a Red Hat
cluster, an application is configured with other cluster resources to form a high-availability cluster
Red Hat Ent erprise Linux 5 Clust er Suit e Overview
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