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server when the cluster is first brought up. If the resource Start Mode is set to MANUAL, you can
manually start the resource on a server when you want, instead of having it automatically start when
servers in the cluster are brought up.
With the resource Failover Mode set to AUTO, the resource automatically starts on the next server
in the Assigned Nodes list in the event of a hardware or software failure. If the resource Failover
Mode is set to MANUAL, you can intervene after a failure occurs and before the resource is moved
to another node.
With the resource Failback Mode set to DISABLE, the resource does not fail back to its most
preferred node when the most preferred node rejoins the cluster. If the resource Failback Mode is set
to AUTO, the resource automatically fails back to its most preferred node when the most preferred
node rejoins the cluster. Set the resource Failback Mode to MANUAL to prevent the resource from
moving back to its preferred node when that node is brought back online, until you are ready to
allow it to happen.
The preferred node is the first server in the list of the assigned nodes for the resource.
If you are creating a new cluster resource, the Resource Policies page should already be displayed.
You can start with
Step
4.
1 In the left column of the main iManager page, locate Clusters and then click the Cluster
Options link.
2 Enter the cluster name or browse and select it, check the box next to the resource whose start,
failover, or failback modes you want to view or edit, then click the Properties link.
3 Click the General tab.
4 (Conditional) Check the Resource Follows Master check box if you want to ensure that the
resource runs only on the master node in the cluster.
If the master node in the cluster fails, the resource will fail over to whichever node becomes the
master.
5 (Conditional) Check the Ignore Quorum check box if you don't want the cluster-wide timeout
period and node number limit enforced.
The quorum default values were set when you installed Novell Cluster Services. You can
change the quorum default values by accessing the properties page for the Cluster object.
Checking this box will ensure that the resource is launched immediately on any server in the
Assigned Nodes list as soon as any server in the list is brought online.
6 Choose the Start, Failover, and Failback modes for this resource.
The default for both Start and Failover modes is AUTO, and the default for Failback mode is
DISABLE.
7 Continue with
Assigning Nodes to a
click Next, then continue with
3.7.12 Assigning Nodes to a Resource
If you are creating a new cluster resource, the Preferred Nodes page should already be displayed. If
you are assigning nodes for an existing resource, the Preferred Nodes page will be displayed as part
of the Resource Policies page. You can start with
1 In the left column of the main iManager page, locate Clusters, then click the Cluster Options
link.
Resource, or if you are creating a new cluster resource,
Assigning Nodes to a
Resource.
Step
4.
Installation and Setup
43
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