Chapter 7. Configure Red Hat Gluster Storage for Hosted Engine using the Cockpit UI

Important

Ensure that disks specified as part of this deployment process do not have any partitions or labels.

  1. Log into the Cockpit UI

    Browse to the Cockpit management interface of the first virtualization host, for example, https://node1.example.com:9090/, and log in with the credentials you created in Chapter 5, Install Host Physical Machines.

  2. Start the deployment wizard

    Click Virtualization > Hosted Engine, select Hosted Engine with Gluster, and click Start. The deployment wizard appears.

    Hosted Engine Setup screen with the Hosted Engine with Gluster radio button selected
  3. Deployment wizard: Specify storage hosts

    Specify the back-end gluster network addresses (not the management network addresses) of the three virtualization hosts. The virtualization host that can SSH using key pairs should be listed first, as it is the host that will run gdeploy and the hosted engine.

    Note

    If you plan to create an arbitrated replicated volume, ensure that you specify the host with the arbiter brick as Host3 on this screen.

    The Hosts tab of the Hosted Engine Setup wizard with example IP addresses in the Host Address fields

    Click Next.

  4. Deployment wizard: Specify packages

    There is no need to install packages. Delete any values from these fields and uncheck the boxes.

    The Packages tab of the Hosted Engine Setup wizard with all values removed from all fields

    Click Next.

  5. Deployment wizard: Specify volumes

    Specify the volumes to be created.

    The Volumes tab of the Hosted Engine Setup wizard with the default values shown
    Name
    Specify the name of the volume to be created.
    Volume Type
    Specify a Replicate volume type. Only replicated volumes are supported for this release.
    Arbiter
    Specify whether to create the volume with an arbiter brick. If this box is checked, the third disk stores only metadata.
    Brick Dirs
    The directory that contains this volume’s bricks.

    The default values are correct for most installations.

  6. Deployment wizard: Specify bricks

    Specify the bricks to be created.

    The Bricks tab of the Hosted Engine Setup wizard with the default values shown
    LV Name
    Specify the name of the logical volume to be created.
    Device
    Specify the raw device you want to use. Red Hat recommends an unpartitioned device.
    Size
    Specify the size of the logical volume to create in GB. Do not enter units, only the number.
    Mount Point
    Specify the mount point for the logical volume. This should match the brick directory that you specified on the previous page of the wizard.
    Thinp
    Specify whether to provision the volume thinly or not. Note that thick provisioning is recommended for the engine volume.
    RAID
    Specify the RAID configuration to use. This should match the RAID configuration of your host. Supported values are raid5, raid6, and jbod.
    Stripe Size
    Specify the RAID stripe size in KB. Do not enter units, only the number. This can be ignored for JBOD configurations.
    Disk Count
    Specify the number of data disks in a RAID volume. This can be ignored for JBOD configurations.
  7. Deployment wizard: Review and edit configuration

    The Review tab of the Hosted Engine Setup wizard with part of the generated deployment configuration file visible
    1. Click Edit to begin editing the generated gdeployConfig.conf file.
    2. (Optional) Configure Transport Layer Security (TLS/SSL)

      This can be configured during or after deployment. If you want to configure TLS/SSL encryption as part of deployment, see one of the following sections:

    3. Review the configuration file

      When you are satisfied with the configuration details, click Save and then click Deploy.

  8. Wait for deployment to complete

    You can watch the deployment process in the text field as the gdeploy process runs using the generated configuration file.

  9. In case of deployment failure

    Example of a failure in gluster deployment using the Cockpit UI

    If deployment fails, click the Redeploy button. This returns you to the Review and edit configuration tab so that you can correct any issues in the generated configuration file before reattempting deployment.

    It may be necessary to clean up previous deployment attempts before you try again. Follow the steps in Chapter 11, Cleaning up Automated Red Hat Gluster Storage Deployment Errors to clean up previous attempts.

  10. The deployment script completes and displays Successfully deployed gluster.

    The final screen of the gluster deployment wizard showing a message that says Successfully deployed Gluster and a button to Continue to Hosted Engine Deployment