Node List Properties

You can specify three node lists when configuring data services:

1. installed_nodes - A property of the resource type. This property is a list of the cluster node names on which the resource type is allowed to be run.

2. nodelist - A property of a resource group. A list of cluster node names where the group can be brought online, in order of preference. These nodes are known as the potential primaries or masters of the resource group. For failover services, you configure only one resource group node list. For scalable services, you configure two resource groups and thus two node lists. One lists the nodes on which the shared addresses are hosted. This list is a failover resource group on which the scalable resources depend. The other is a list of nodes on which the application resources are hosted. The node list for the resource group that contains the shared addresses must be a superset of the node list for the application resources because the application resources depend on the shared addresses.

3. auxnodelist - A property of a resource group that contains shared addresses. This property is a list of physical node IDs that identify cluster nodes that can host the shared address but never serve as primary in the case of failover. These nodes are mutually exclusive with the nodes identified in the node list of the resource group. These auxiliary nodes can never serve as masters of the resource group. This list pertains to scalable services only.