Chapter 4. Configuring and Managing Cluster Resources
	3.2. Manual Configuration of a Resource		4.2. Creating Cluster Resources

Configuring and Managing Cluster Resources

Contents

4.1. Graphical HA Management Client
4.2. Creating Cluster Resources
4.3. Configuring Resource Constraints
4.4. Specifying Resource Failover Nodes
4.5. Specifying Resource Failback Nodes (Resource Stickiness)
4.6. Configuring Resource Monitoring
4.7. Starting a New Cluster Resource
4.8. Removing a Cluster Resource
4.9. Configuring a Heartbeat Cluster Resource Group
4.10. Configuring a Heartbeat Clone Resource
4.11. Migrating a Cluster Resource

Abstract

Cluster resources must be created for every resource or application you run on servers in your cluster. Cluster resources can include Web sites, e-mail servers, databases, file systems, virtual machines, and any other server-based applications or services you want to make available to users at all times.

You can either use the graphical HA Management Client utility, or the cibadmin command line utility to create resources.

This chapter introduces the graphical HA Management Client and then covers several topics you need when configuring a cluster: creating resources, configuring constraints, specifying failover nodes and failback nodes, configuring resource monitoring, starting or removing resources, configuring resource groups or clone resources, and migrating resources manually.

Graphical HA Management Client

When starting the Heartbeat GUI, you need to connect to a cluster.

Password for the hacluster User

	Password for the `hacluster` User
The Heartbeat installation creates a linux user named `hacluster`. Prior to using the HA Management Client, you must set the password for the `hacluster` user. To do this, enter passwd hacluster at the command line and enter a password for the `hacluster` user. Do this on every node where you will run the HA Management Client utility.

The Heartbeat installation creates a linux user named hacluster. Prior to using the HA Management Client, you must set the password for the hacluster user. To do this, enter passwd hacluster at the command line and enter a password for the hacluster user.

Do this on every node where you will run the HA Management Client utility.

To start the HA Management Client, enter hb_gui at the command line of a Linux server or workstation. Log in to the cluster by selecting Connection+Login. You are prompted for a username and password.

If you are running the HA Management Client on a Heartbeat cluster server, the server and username fields should already be filled in. If not, specify the server IP address of a cluster server and hacluster as the username.

After being connected, your main window shows the cluster components, resources and constraints:

Depending on which entry you select in the left pane, several tabs appear in the right pane of the main window. For example, if you select the topmost entry, linux-ha, you can access three tabs on the right in the main window, allowing you to view general Information on the cluster or to change certain options and aspects on the Configurations and Advanced tabs.

In the following, find some examples how to create and manage cluster resources with the HA Management Client.