Installation guide

4. Clicking Go causes a progress page to be displayed. When the action is complete, a page is
displayed showing the list of nodes for the cluster.
4.3. Managing High-Availabilit y Services
You can perform the following management functions for high-availability services through the lu ci
server component of Co n g a:
Configure a service.
Stop or start a service.
Restart a service.
Delete a service
To perform one the functions in the preceding list, follow the steps in this section. The starting point
of the procedure is at the cluster-specific page that you navigate to from Choose a cluster to
administer displayed on the clu st er tab.
1. At the detailed menu for the cluster (below the clu st ers menu), click Services. Clicking
Services causes the display of services for the cluster in the center of the page.
2. At the right of each service listed on the page, click the Ch o o se a t ask drop-down box.
Clicking Ch o o se a t ask drop-down box reveals the following selections depending on if the
service is running:
If service is running — Co n f ig u re t h is service, Rest art t h is service, and St o p t h is
service.
If service is not running — C o n f ig u re t h is service, St art t h is service, and D elet e
t h is service.
The actions of each function are summarized as follows:
Co n f ig u re t h is service — Co n f ig u re t h is service is available when the service is
running or not running. Selecting C o n f ig u re t h is service causes the services
configuration page for the service to be displayed. On that page, you can change the
configuration of the service. For example, you can add a resource to the service. (For
more information about adding resources and services, refer to Section 3.8, “ Adding
Cluster Resources” and Section 3.9, “ Adding a Cluster Service to the Cluster” .) In
addition, a drop-down box on the page provides other functions depending on if the
service is running.
When a service is running, the drop-down box provides the following functions: restarting,
disabling, and relocating the service.
When a service is not running, the drop-down box on the configuration page provides the
following functions: enabling and deleting the service.
If you are making configuration changes, save the changes by clicking Save. Clicking
Save causes a progress page to be displayed. When the change is complete, another
page is displayed showing a list of services for the cluster.
If you have selected one of the functions in the drop-down box on the configuration page,
click Go. Clicking Go causes a progress page to be displayed. When the change is
complete, another page is displayed showing a list of services for the cluster.
Red Hat Ent erprise Linux 5 Clust er Administ rat ion
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