Chapter 6. Upgrading the Overcloud

This process upgrades the overcloud.

Prerequisites

  • You have upgraded the undercloud to the latest version.
  • You have prepared your custom environment files to accommodate the changes in the upgrade.

6.1. Running the overcloud upgrade preparation

The upgrade requires running openstack overcloud upgrade prepare command, which performs the following tasks:

  • Updates the overcloud plan to OpenStack Platform 13
  • Prepares the nodes for the upgrade

Procedure

  1. Source the stackrc file: 

    $ source ~/stackrc

  2. Run the upgrade preparation command: 

    $ openstack overcloud upgrade prepare \
    --templates \
    -e /home/stack/templates/overcloud_images.yaml \
    -e <ENVIRONMENT FILE>

    Include the following options relevant to your environment:

    • Custom configuration environment files (-e)
    • The environment file with your new container image locations (-e). Note that the upgrade command might display a warning about using the --container-registry-file. You can ignore this warning as this option is deprecated in favor of using -e for the container image environment file.
    • If applicable, your custom roles (roles_data) file using --roles-file.
    • If applicable, your composable network (network_data) file using --networks-file.
  3. Wait until the upgrade preparation completes.

6.2. Upgrading all Controller nodes

This process upgrades all the Controller nodes to OpenStack Platform 13. The process involves running the openstack overcloud upgrade run command and including the --nodes Controller option to restrict operations to the Controller nodes only.

Procedure

  1. Source the stackrc file: 

    $ source ~/stackrc

  2. Run the upgrade command: 

    $ openstack overcloud upgrade run --nodes Controller
    • If using a custom stack name, pass the name with the --stack option.
  3. Wait until the Controller node upgrade completes.

6.3. Upgrading all Compute nodes

This process upgrades all remaining Compute nodes to OpenStack Platform 13. The process involves running the openstack overcloud upgrade run command and including the --nodes Compute option to restrict operations to the Compute nodes only.

Procedure

  1. Source the stackrc file: 

    $ source ~/stackrc

  2. Run the upgrade command: 

    $ openstack overcloud upgrade run --nodes Compute
    • If using a custom stack name, pass the name with the --stack option.
  3. Wait until the Compute node upgrade completes.

6.4. Upgrading all Ceph Storage nodes

This process upgrades the Ceph Storage nodes. The process involves:

  • Running the openstack overcloud upgrade run command and including the --nodes CephStorage option to restrict operations to the Ceph Storage nodes only.
  • Running the openstack overcloud ceph-upgrade run command to perform an upgrade to a containerized Red Hat Ceph Storage 3 cluster.

Procedure

  1. Source the stackrc file: 

    $ source ~/stackrc

  2. Run the upgrade command: 

    $ openstack overcloud upgrade run --nodes CephStorage
    • If using a custom stack name, pass the name with the --stack option.
  3. Wait until the node upgrade completes.

  4. Run the Ceph Storage upgrade command. For example: 

    $ openstack overcloud ceph-upgrade run \
    --templates \
    -e /home/stack/templates/overcloud_images.yaml \
    -e /usr/share/openstack-tripleo-heat-templates/environments/ceph-ansible/ceph-ansible.yaml \
    -e /home/stack/templates/ceph-customization.yaml \
    -e <ENVIRONMENT FILE>

    Include the following options relevant to your environment:

    • Custom configuration environment files (-e). For example:

      • The environment file with your container image locations (overcloud_images.yaml). Note that the upgrade command might display a warning about using the --container-registry-file. You can ignore this warning as this option is deprecated in favor of using -e for the container image environment file.
      • The relevant environment files for your Ceph Storage nodes.
      • Any additional environment files relevant to your environment.
    • If using a custom stack name, pass the name with the --stack option.
    • If applicable, your custom roles (roles_data) file using --roles-file.
    • If applicable, your composable network (network_data) file using --networks-file.
  5. Wait until the Ceph Storage node upgrade completes.

6.5. Finalizing the upgrade

The upgrade requires a final step to update the overcloud stack. This ensures the stack’s resource structure aligns with a regular deployment of OpenStack Platform 13 and allows you to perform standard openstack overcloud deploy functions in the future.

Procedure

  1. Source the stackrc file: 

    $ source ~/stackrc

  2. Run the upgrade finalization command: 

    $ openstack overcloud upgrade converge \
    --templates \
    -e <ENVIRONMENT FILE>

    Include the following options relevant to your environment:

    • Custom configuration environment files (-e).
    • If using a custom stack name, pass the name with the --stack option.
    • If applicable, your custom roles (roles_data) file using --roles-file.
    • If applicable, your composable network (network_data) file using --networks-file.
  3. Wait until the upgrade finalization completes.