Onlining And Offlining (Loading And Unloading) Cluster Resources From A Cluster Node - Novell OPEN ENTERPRISE SERVER 2 SP 2 - CLUSTER SERVICES 1.8.7 FOR LINUX Manual

Migrating resources lets you balance the load and evenly distribute applications among the servers
in your cluster.
Using iManager
1 In iManager, click Clusters, then click Cluster Manager.
2 Browse to locate and select the Cluster object of the cluster you want to manage.
3 Select the check box next to the resource you want to migrate and click Migrate.
A page appears, displaying a list of possible servers that you can migrate this resource to.
4 Select a server from the list to migrate the resource to, then click OK to migrate the resource to
the selected server.
Using Console Commands
1 As the
cluster migrate resource_name node_name
8.5 Onlining and Offlining (Loading and
Unloading) Cluster Resources from a Cluster
Node
You can start or stop a resource from running on a node by onlining or offlining the resource.
Offlining the resource unloads from the server. It cannot be loaded on any other servers in the cluster
and remains unloaded until you load it again. If you edit a resource that is online, the changes you
made do not take effect until the resource is taken offline and brought online again.
After a cluster resource is enabled, the load and unload scripts take care of starting and stopping the
services or mounting and dismounting the volumes that are configured in the resource. You start
services and mount devices by onlining the resource. You stop services and unmount devices by
offlining the resource. If monitoring is enabled and you start, stop, or restart services outside the
cluster framework while the cluster resource is online, a monitoring failure occurs, which triggers a
failover of the cluster resource.
There are maintenance situations where you might need to control services using the standard
interfaces. In these rare cases, you must first offline the cluster resource, then use non-cluster
methods to start and stop a service or mount and dismount a volume outside the cluster framework.
When you are done, online the cluster resource to resume normal cluster handling.
Using iManager
1 In iManager, select Clusters, then select Cluster Manager.
2 Browse to locate and select the Cluster object of the cluster you want to manage.
A list of resources and resource states displays.
3 Select the check box next to the resource you want to manage, then click Online or click
Offline.
102 OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guide
user, enter the following at the console command prompt of a cluster node:
root