6.2 Configuring Global Cluster Options

Global cluster options control how the cluster behaves when confronted with certain situations. They are grouped into sets and can be viewed and modified with the cluster management tools like Pacemaker GUI and crm shell. The predefined values can be kept in most cases. However, to make key functions of your cluster work correctly, you need to adjust the following parameters after basic cluster setup:

Modifying Global Cluster Options

  1. Start the Pacemaker GUI and log in to the cluster as described in Section 6.1.1, Logging in to a Cluster.

  2. Select View > Simple Mode.

  3. In the left pane, select CRM Config to view the global cluster options and their current values.

  4. Depending on your cluster requirements, set No Quorum Policy to the appropriate value.

  5. If you need to disable fencing for any reasons, deselect stonith-enabled.

    IMPORTANT: No Support Without STONITH

    A cluster without STONITH enabled is not supported.

  6. Confirm your changes with Apply.

You can at any time switch back to the default values for all options by selecting CRM Config in the left pane and clicking Default.