Cluster Configuration Repository

The Cluster Configuration Repository (CCR) is a private, cluster-wide, distributed database for storing information that pertains to the configuration and state of the cluster. To avoid corrupting configuration data, each node must be aware of the current state of the cluster resources. The CCR ensures that all nodes have a consistent view of the cluster. The CCR is updated when error or recovery situations occur or when the general status of the cluster changes.

The CCR structures contain the following types of information:

• Cluster and node names

• Cluster transport configuration

• The names of Solaris Volume Manager disk sets or Veritas disk groups

• A list of nodes that can master each disk group

• Operational parameter values for data services

• Paths to data service callback methods

• DID device configuration

• Current cluster status