Novell LINUX ENTERPRISE 11 - HIGH AVAILABILITY, Manual, Page: 51 / 298

5 Enter a unique ID for the constraint. When modifying existing constraints,
the ID is already defined and is displayed in the configuration dialog.
6 Select the Resource which is the collocation source. The list shows the IDs
of all resources that have been configured for the cluster.
If the constraint cannot be satisfied, the cluster may decide not to allow the
resource to run at all.
7
If you leave both the Resource and the With Resource field empty, you can
also add a resource set by clicking Add > Resource Set. To add a lifetime, just
click Add > Lifetime.
8
In With Resource, define the collocation target. The cluster will decide where
to put this resource first and then decide where to put the resource in the Re-
source field.
9 Define a Score to determine the location relationship between both resources.
Positive values indicate the resources should run on the same node. Negative
values indicate the resources should not run on the same node. Values of
+/-
INFINITY
change
should
to
must
. The score will be combined with other
factors to decide where to put the node.
10
If needed, specify further parameters, like Resource Role.
Depending on the parameters and options you choose, a short Description
explains the effect of the collocational constraint you are configuring.
11
If all parameters are set according to your wishes, click OK to finish the con-
figuration of the constraint. The configuration dialog is closed and the main
window shows the newly added or modified constraint.
Procedure 4.6 Adding or Modifying Ordering Constraints
1 Start the Linux HA Management Client and log in to the cluster as described in
Section 4.1, “Linux HA Management Client” (page 32).
2 In the Linux HA Management Client main window, click Constraints in the left
pane to see the constraints already configured for the cluster.
3 In the left pane, select Constraints and click Add.
Configuring Cluster Resources with the GUI 41