1.3.4. Cluster Configuration System

1.3.4. Cluster Configuration System

The Cluster Configuration System (CCS) manages the cluster configuration and provides configuration information to other cluster components in a Red Hat cluster. CCS runs in each cluster node and makes sure that the cluster configuration file in each cluster node is up to date. For example, if a cluster system administrator updates the configuration file in Node A, CCS propagates the update from Node A to the other nodes in the cluster (refer to Figure 1.8, “CCS Overview”).

CCS Overview

[D]

Figure 1.8. CCS Overview

Other cluster components (for example, CMAN) access configuration information from the configuration file through CCS (refer to Figure 1.8, “CCS Overview”).

Accessing Configuration Information

[D]

Figure 1.9. Accessing Configuration Information

The cluster configuration file (/etc/cluster/cluster.conf) is an XML file that describes the following cluster characteristics:


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