5.7. Resource Group Creation Example

Use the following procedure to create a resource group using the Cluster Manager CLI:

1. Determine the list of resources that belong to the resource group you are defining. The list of resources that belong to a resource group are the resources that move from one node to another as one unit.

   A resource group that provides NFS services would contain a resource of each of the following types:

   • IP_address

   • volume

   • filesystem

   • NFS

     All resource and resource type dependencies of resources in a resource group must be satisfied. For example, the NFS resource type depends on the filesystem resource type, so a resource group containing a resource of NFS resource type should also contain a resource of filesystem resource type.

2. Determine the failover policy to be used by the resource group.

3. Use the template cluster_mgr script available in the /usr/lib/failsafe/cmgr-templates/cmgr-create-resource_group file.

   This example shows a script that creates a resource group with the following characteristics:

   • The resource group is named nfs-group

   • The resource group is in cluster HA-cluster

   • The resource group uses the failover policy

   • the resource group contains IP_Address, volume, filesystem, and NFS resources

     The following script can be used to create this resource group:

     define resource_group nfs-group in cluster HA-cluster   set failover_policy to n1_n2_ordered   add resource 192.0.2.34 of resource_type IP_address   add resource havol1 of resource_type volume   add resource /hafs1 of resource_type filesystem   add resource /hafs1 of resource_type NFS done

4. Run this script using the -f option of the cluster_mgr command.