Specifying Resource Failover Nodes

Start the HA Management Client and log in to the cluster as described in Section 4.1, “Graphical HA Management Client”.

Select the desired resource or group, select Resources+Add New Item, or click the + button.

Choose Location as the resource item type, then click OK.

Specify the ID of the resource constraint. The resource name for the resource you selected should already be displayed in the Resource field.

Click OK to add the constraint. The score will automatically be set to 0 by default to avoid unwanted effects caused by an incomplete rule.

Score indicates the value you are assigning to this resource constraint. Constraints with higher scores are applied before those with lower scores. By creating additional location constraints with different scores for a given resource, you can specify an order for the nodes that a resource will fail over to.

If you need to modify the score, select the added constraint in the left pane of the main window and enter a new Score value in the Attributes section in the right pane.

On the left side of the page, select the resource constraint you just created and click Add Expression.

Select #uname as the Attribute, eq as the Operation, and the server name of the failover node as the Value.

Click OK, then click Apply to save your changes.

Conditional: If you want to specify additional failover nodes for a resource, create additional location constraints by performing Step 1 through Step 9 for each constraint.