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7 In case you need to change the resource order for a group, use the Up and Down
buttons to sort the resources on the Primitive tab.
8 To remove a resource from the group, select the resource on the Primitives tab
and click Remove.
9 Click OK to finish the configuration of that group. The configuration dialog is
closed and the main window shows the modified group.
4.11 Configuring a Clone Resource
You may want certain resources to run simultaneously on multiple nodes in your cluster.
To do this you must configure a resource as a clone. Examples of resources that might
be configured as clones include STONITH and cluster file systems like OCFS2. You
can clone any resource provided it is supported by the resource’s Resource Agent. Clone
resources may even be configured differently depending on which nodes they are
hosted.
There are three types of resource clones:
Anonymous Clones
These are the simplest type of clones. They behave identically anywhere they are
running. Because of this, there can only be one instance of an anonymous clone
active per machine.
Globally Unique Clones
These resources are distinct entities. An instance of the clone running on one node
is not equivalent to another instance on another node; nor would any two instances
on the same node be equivalent.
Stateful Clones
Active instances of these resources are divided into two states, active and passive.
These are also sometimes referred to as primary and secondary, or master and slave.
Stateful clones can be either anonymous or globally unique.
54 High Availability Guide