⁠6.4. Configuring Fencing

If you selected High Availability Controllers / Compute in the Deployment Settings step when creating a deployment, you must manually configure fencing on each of the hosts you assign to the controller deployment role. The following procedure must be performed after you have assigned hosts to deployment roles and before you provision the RHEL OpenStack Platform environment.

Note

For more information about configuring high availability in Red Hat Enterprise Linux 7.2, see High Availability Add-On Reference.

Important

To configure fencing, you must have a fencing device in your RHEL OpenStack Platform environment that you can use to fence the nodes in that environment.

⁠6.4.1. Configuring Fencing on High-Availability Nodes

Configure fencing on hosts that have been assigned to the controller deployment role in deployments where you selected High Availability Controllers / Compute in the Deployment Settings step when creating that deployment.
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Procedure 6.7. Configuring Fencing on High-Availability Nodes

  1. From the title bar in the main screen of the user interface, click Hosts → All hosts.
  2. Click the name of the host to configure.
  3. Click Edit.
  4. Click the Fencing tab.
    ⁠
    The Fencing tab

    Figure 6.9. The Fencing tab

  5. If the message Fencing is disabled. To enable, first you need to add a BMC interface to the Host is displayed, you must manually configure the details of a baseboard management controller network interface controller attached to the host:
    1. Click the Network tab.
    2. Click Add Interface.
    3. Select BMC from the Type list.
    4. Enter the MAC address for the network interface controller in the MAC address field.
    5. Click the Fencing tab.
  6. Select Enable Fencing.
  7. Select IPMI from the Type list.
  8. Enter the IP address of the fencing device in the IP Address field.
  9. Enter the name of the IPMI user on the fencing device in the Username field.
  10. Enter the password by which to authenticate the above user in the Password field.
  11. Select Expose Lanplus to use the lanplus interface.
  12. If you selected the Expose Lanplus check box, enter any options in the Lanplus Options field.
  13. Click Submit.
You have configured fencing for the host, and the settings you specified are applied to the host when you provision RHEL OpenStack Platform.