Getting Started with Job Management Manager › Load Balancing › Special Case Job and Load Balance Group Definitions

Special Case Job and Load Balance Group Definitions

The following are special cases with Job and Load Balance Group definitions:

A node with group definitions and jobs referencing these groups is moved from a cluster to a standalone system:

In the Motif interface, you can create Load Balance group definitions; however, only the local node is available to add to a Load Balance group. If a node is removed from a group, it is temporarily added to the list of Unselected Nodes. However, when the job modification is complete, it is deleted from the available list. In the Configuration CLI interface, any node can be added or removed from a group (see SCHEDULE CONFIG ADD NODE). For scheduling, load balancing is disabled by default on a standalone node. A job can only run on the standalone node.

A node with group definitions and jobs referencing these groups is moved from a cluster to another cluster:

A job referencing a group with nonexistent nodes does not load balance to nodes that do not exist in the current cluster. In the Motif interface, group definitions can be created and deleted. However, only cluster nodes from the new cluster are available to add to any group. If a node from the former cluster is removed from a group, it is temporarily added to the list of Unselected Nodes. However when the job modification is complete, it is deleted from the available list. In the Configuration CLI interface, any node can be added or removed from a group (see SCHEDULE CONFIG ADD NODE). For more information, see the section Scheduling Notes.

A standalone node with no group definitions:

In the Motif interface, you can create group definitions; however, only the local node is available to add to any group. In the Configuration CLI interface, you can add or remove any node from a group (see SCHEDULE CONFIG ADD NODE). Load balancing is disabled by default on a standalone node. A job can only run on the standalone node.

A cluster node with no group definitions:

In the Motif interface, group definitions can be created using nodes available in the cluster to add to any group. In the Configuration CLI interface, any node can be added or removed from a group (see SCHEDULE CONFIG ADD NODE). Load balancing is enabled by default. For more information, see the section Scheduling Notes.