Cluster resource group exit programs

A cluster resource group exit program is called after a cluster-related event for a CRG occurs.

The exit program is optional for a resilient device CRG but is required for the other CRG types. When a cluster resource group exit program is used, it is called on the occurrence of cluster-wide events, including when:

• A node leaves the cluster unexpectedly.
• A node leaves the cluster as a result of the End Cluster Node (QcstEndClusterNode) API or Remove Cluster Node Entry (QcstRemoveClusterNodeEntry) API.
• The cluster is deleted as a result of the Delete Cluster (QcstDeleteCluster) API.
• A node is activated by the Start Cluster Node (QcstStartClusterNode) API.
• Communication with a partitioned node is re-established.

Exit programs are written or provided by cluster middleware IBM Business Partners and by cluster-aware application program providers.

For detailed information on the cluster resource group exit programs, including what information is passed to them for each action code, see Cluster Resource Group Exit Program in the cluster API documentation.