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4.9 Removing a Cluster Resource
To remove a cluster resource with the Linux HA Management Client, switch to the
Resources view in the left pane, then select the respective resource and click Remove.
NOTE: Removing Referenced Resources
Cluster resources cannot be removed if their ID is referenced by any constraint.
If you cannot delete a resource, check where the resource ID is referenced and
remove the resource from the constraint first.
4.10 Configuring a Cluster Resource
Group
Some cluster resources are dependent on other components or resources, and require
that each component or resource starts in a specific order and runs together on the same
server. To simplify this configuration we support the concept of groups.
Groups have the following properties:
Starting and Stopping Resources
Resources are started in the order they appear in and stopped in the reverse order
which they appear in.
Dependency
If a resource in the group cannot run anywhere, then none of the resources located
after that resource in the group is allowed to run.
Group Contents
Groups may only contain a collection of primitive cluster resources. To refer to
the child of a group resource, use the child’s ID instead of the group’s.
Constraints
Although it is possible to reference the group’s children in constraints, it is usually
preferable to use the group’s name instead.
Configuring Cluster Resources with the GUI 49