Installation guide

Chapter 3. Managing Red Hat Cluster

With Conga

This chapter describes various administrative tasks for managing a Red Hat Cluster and con-

sists of the following sections:

• Section 1, “Starting, Stopping, and Deleting Clusters”

• Section 2, “Managing Cluster Nodes”

• Section 3, “Managing High-Availability Services”

• Section 4, “Diagnosing and Correcting Problems in a Cluster”

1. Starting, Stopping, and Deleting Clusters

You can perform the following cluster-management functions through the luci server component

of Conga:

• Restart a cluster.

• Start a cluster.

• Stop a cluster.

• Delete a cluster.

To perform one of the functions in the preceding list, follow the steps in this section. The starting

point of the procedure is at the cluster tab (at the Choose a cluster to administer page).

1. At the right of the Cluster Name for each cluster listed on the Choose a cluster to admin-

ister page is a drop-down box. By default, the drop-down box is set to Restart this cluster.

Clicking the drop-down box box reveals all the selections available: Restart this cluster,

Stop this cluster/Start this cluster, and Delete this cluster. The actions of each function

are summarized as follows:

• Restart this cluster — Selecting this action causes the cluster to be restarted. You can

select this action for any state the cluster is in.

• Stop this cluster/Start this cluster — Stop this cluster is available when a cluster is

running. Start this cluster is available when a cluster is stopped.

Selecting Stop this cluster shuts down cluster software in all cluster nodes.

Selecting Start this cluster starts cluster software.

• Delete this cluster — Selecting this action halts a running cluster, disables cluster soft-

ware from starting automatically, and removes the cluster configuration file from each