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Chapter 2. Configure High Availability using Fencing Policies

Fencing allows a cluster to enforce performance and availability policies and react to unexpected host failures by automatically rebooting virtualization hosts.

Several policies specific to Red Hat Gluster Storage must be enabled to ensure that fencing activities do not disrupt storage services in a Red Hat Hyperconverged (RHHI) Infrastructure deployment.

  1. In Red Hat Virtualization Manager, click the Clusters tab.
  2. Click Edit. The Edit Cluster window opens.
  3. Click the Fencing policy tab.
  4. Check the Enable fencing checkbox.

  5. Check the checkboxes for at least the following fencing policies:

    • Skip fencing if gluster bricks are up
    • Skip fencing if gluster quorum not met

    See Appendix A, Fencing Policies for Red Hat Gluster Storage for details on the effects of these policies.

  6. Click OK to save settings.
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