Chapter 18. Upgrading a standard overcloud

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. Run the upgrade preparation command:

   $ openstack overcloud upgrade prepare \
       --stack STACK NAME \
       --templates \
       -e ENVIRONMENT FILE
       …​
       -e /home/stack/templates/upgrades-environment.yaml \
       -e /home/stack/templates/rhsm.yaml \
       -e /home/stack/containers-prepare-parameter.yaml \
       -e /usr/share/openstack-tripleo-heat-templates/environments/services/neutron-ovs.yaml \
       …​

   Include the following options relevant to your environment:

   • The environment file (upgrades-environment.yaml) with the upgrade-specific parameters (-e).
   • The environment file (rhsm.yaml) with the registration and subscription parameters (-e).
   • The environment file (containers-prepare-parameter.yaml) with your new container image locations (-e). In most cases, this is the same environment file that the undercloud uses.
   • The environment file (neutron-ovs.yaml) to maintain OVS compatibility.
   • Any custom configuration environment files (-e) relevant to your deployment.
   • If applicable, your custom roles (roles_data) file using --roles-file.
   • If applicable, your composable network (network_data) file using --networks-file.
   • If you use a custom stack name, pass the name with the --stack option.
3. Wait until the upgrade preparation completes.

4. Download the container images:

   $ openstack overcloud external-upgrade run --stack STACK NAME --tags container_image_prepare

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. On the undercloud node, identify the bootstrap Controller node:

   $ tripleo-ansible-inventory --list [--stack <stack_name>] |jq .overcloud_Controller.hosts[0]

   • Replace <stack_name> with the name of your stack.

3. Upgrade the bootstrap Controller node:

   1. Perform a Leapp upgrade of the operating system on the bootstrap Controller node:

      $ openstack overcloud upgrade run [--stack <stack>] --tags system_upgrade --limit <bootstrap_controller_node>

      • Replace <bootstrap_controller_node> with the host name of the bootstrap Controller node in your environment, for example, overcloud-controller-0.

      • If you are not using the default overcloud stack name, overcloud, include the --stack optional argument and replace <stack> with the name of your overcloud stack.

        The bootstrap Controller node is rebooted as part of the Leapp upgrade.

   2. Copy the latest version of the database from an existing node to the bootstrap node:

      $ openstack overcloud external-upgrade run [--stack <stack>] --tags system_upgrade_transfer_data

      Important

      This command causes an outage on the control plane. You cannot perform any standard operations on the overcloud until the RHOSP upgrade is complete and the control plane is active again.

   3. Launch temporary 16.2 containers on Compute nodes to help facilitate workload migration when you upgrade Compute nodes at a later step:

      $ openstack overcloud upgrade run --stack <stack> --playbook upgrade_steps_playbook.yaml --tags nova_hybrid_state --limit all

   4. Upgrade the overcloud with no tags:

      $ openstack overcloud upgrade run --stack <stack> --limit <bootstrap_controller_node>

   5. Verify that after the upgrade, the new Pacemaker cluster is started and that the control plane services such as galera, rabbit, haproxy, and redis are running:

      $ sudo pcs status

4. Upgrade the next Controller node:

   1. Verify that the old cluster is no longer running:

      $ sudo pcs status

      An error similar to the following is displayed when the cluster is not running:

      Error: cluster is not currently running on this node

   2. Perform a Leapp upgrade of the operating system on the Controller node:

      $ openstack overcloud upgrade run --stack <stack> --tags system_upgrade --limit <controller_node>

      • Replace <controller_node> with the host name of the Controller node to upgrade, for example, overcloud-controller-1.

        The Controller node is rebooted as a part of the Leapp upgrade.

   3. Upgrade the Controller node, adding it to the previously upgraded nodes in the new Pacemaker cluster:

      $ openstack overcloud upgrade run --stack <stack> --limit <bootstrap_controller_node,controller_node_1,controller_node_n>

      • Replace <bootstrap_controller_node,controller_node_1,controller_node_n> with a comma-separated list of the Controller nodes that you have upgraded so far, and the additional Controller node that you want to add to the Pacemaker cluster, for example, overcloud-controller-0,overcloud-controller-1, overcloud-controller-2.

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. Identify the bootstrap Controller node by running the following command on the undercloud node:

   $ tripleo-ansible-inventory --list [--stack <stack_name>] |jq .overcloud_Controller.hosts[0]

   • Optional: Replace <stack_name> with the name of the stack. If not specified, the default is overcloud.

3. Upgrade the bootstrap Controller node:

   1. Run the external upgrade command with the ceph_systemd tag:

      $ openstack overcloud external-upgrade run [--stack <stack_name>] --tags ceph_systemd -e ceph_ansible_limit=overcloud-controller-0

      Replace <stack_name> with the name of your stack.

      This command performs the following functions:

      • Changes the systemd units that control the Ceph Storage containers to use Podman management.
      • Limits actions to the selected Controller node using the ceph_ansible_limit variable.

      This step is a preliminary measure to prepare the Ceph Storage services for The leapp upgrade.

   2. Run the upgrade command with the system_upgrade tag:

      $ openstack overcloud upgrade run [--stack <stack_name>] --tags system_upgrade --limit overcloud-controller-0

      This command performs the following actions:

      • Performs a Leapp upgrade of the operating system.

      • Performs a reboot as a part of the Leapp upgrade.

        Important

        The next command causes an outage on the control plane. You cannot perform any standard operations on the overcloud during the next few steps.

   3. Run the external upgrade command with the system_upgrade_transfer_data tag:

      $ openstack overcloud external-upgrade run [--stack <stack_name>] --tags system_upgrade_transfer_data

      This command copies the latest version of the database from an existing node to the bootstrap node.

   4. Run the upgrade command with the nova_hybrid_state tag and run only the upgrade_steps_playbook.yaml playbook:

      $ openstack overcloud upgrade run [--stack <stack_name>] --playbook upgrade_steps_playbook.yaml --tags nova_hybrid_state --limit all

      This command launches temporary 16.2 containers on Compute nodes to help facilitate workload migration when you upgrade Compute nodes at a later step.

   5. Run the upgrade command with no tags:

      $ openstack overcloud upgrade run [--stack <stack_name>] --limit overcloud-controller-0

      This command performs the Red Hat OpenStack Platform upgrade.

      Important

      The control plane becomes active when this command finishes. You can perform standard operations on the overcloud again.

   6. Verify that after the upgrade, the new Pacemaker cluster is started and that the control plane services such as galera, rabbit, haproxy, and redis are running:

      $ sudo pcs status

4. Upgrade the next Controller node:

   1. Verify that the old cluster is no longer running:

      $ sudo pcs status

      An error similar to the following is displayed when the cluster is not running:

      Error: cluster is not currently running on this node

   2. Run the external upgrade command with the ceph_systemd tag:

      $ openstack overcloud external-upgrade run [--stack <stack_name>] --tags ceph_systemd -e ceph_ansible_limit=overcloud-controller-1

      This command performs the following functions:

      • Changes the systemd units that control the Ceph Storage containers to use Podman management.
      • Limits actions to the selected Controller node using the ceph_ansible_limit variable.

      This step is a preliminary measure to prepare the Ceph Storage services for The leapp upgrade.

   3. Run the upgrade command with the system_upgrade tag on the next Controller node:

      $ openstack overcloud upgrade run [--stack <stack_name>] --tags system_upgrade --limit overcloud-controller-1

      This command performs the following actions:

      • Performs a Leapp upgrade of the operating system.
      • Performs a reboot as a part of the Leapp upgrade.

   4. Run the upgrade command with no tags:

      $ openstack overcloud upgrade run [--stack <stack_name>] --limit overcloud-controller-0,overcloud-controller-1

      This command performs the Red Hat OpenStack Platform upgrade. In addition to this node, include the previously upgraded bootstrap node in the --limit option.

5. Upgrade the final Controller node:

   1. Verify that the old cluster is no longer running:

      $ sudo pcs status

      An error similar to the following is displayed when the cluster is not running:

      Error: cluster is not currently running on this node

   2. Run the external upgrade command with the ceph_systemd tag:

      $ openstack overcloud external-upgrade run [--stack <stack_name>] --tags ceph_systemd -e ceph_ansible_limit=overcloud-controller-2

      This command performs the following functions:

      • Changes the systemd units that control the Ceph Storage containers to use Podman management.
      • Limits actions to the selected Controller node using the ceph_ansible_limit variable.

      This step is a preliminary measure to prepare the Ceph Storage services for The leapp upgrade.

   3. Run the upgrade command with the system_upgrade tag:

      $ openstack overcloud upgrade run [--stack <stack_name>] --tags system_upgrade --limit overcloud-controller-2

      This command performs the following actions:

      • Performs a Leapp upgrade of the operating system.
      • Performs a reboot as a part of the Leapp upgrade.

   4. Run the upgrade command with no tags:

      $ openstack overcloud upgrade run [--stack <stack_name>] --limit overcloud-controller-0,overcloud-controller-1,overcloud-controller-2

      This command performs the Red Hat OpenStack Platform upgrade. Include all Controller nodes in the --limit option.

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. Select a Ceph Storage node and upgrade the operating system:

   1. Run the external upgrade command with the ceph_systemd tag:

      $ openstack overcloud external-upgrade run --stack STACK NAME --tags ceph_systemd -e ceph_ansible_limit=overcloud-cephstorage-0

      This command performs the following functions:

      • Changes the systemd units that control the Ceph Storage containers to use Podman management.
      • Limits actions to the selected node using the ceph_ansible_limit variable.

      This step is a preliminary measure to prepare the Ceph Storage services for The leapp upgrade.

   2. Run the upgrade command with the system_upgrade tag:

      $ openstack overcloud upgrade run --stack STACK NAME --tags system_upgrade --limit overcloud-cephstorage-0

      This command performs the following actions:

      • Performs a Leapp upgrade of the operating system.
      • Performs a reboot as a part of the Leapp upgrade.

   3. Run the upgrade command with no tags:

      $ openstack overcloud upgrade run --stack STACK NAME --limit overcloud-cephstorage-0

      This command runs the config-download playbooks and configures the composable services on the Ceph Storage node. This step does not upgrade the Ceph Storage nodes to Red Hat Ceph Storage 4. The Red Hat Ceph Storage 4 upgrade occurs in a later procedure.

3. Select the next Ceph Storage node and upgrade the operating system:

   1. Run the external upgrade command with the ceph_systemd tag:

      $ openstack overcloud external-upgrade run --stack STACK NAME --tags ceph_systemd -e ceph_ansible_limit=overcloud-cephstorage-1

      This command performs the following functions:

      • Changes the systemd units that control the Ceph Storage containers to use Podman management.
      • Limits actions to the selected node using the ceph_ansible_limit variable.

      This step is a preliminary measure to prepare the Ceph Storage services for The leapp upgrade.

   2. Run the upgrade command with the system_upgrade tag:

      $ openstack overcloud upgrade run --stack STACK NAME --tags system_upgrade --limit overcloud-cephstorage-1

      This command performs the following actions:

      • Performs a Leapp upgrade of the operating system.
      • Performs a reboot as a part of the Leapp upgrade.

   3. Run the upgrade command with no tags:

      $ openstack overcloud upgrade run --stack STACK NAME --limit overcloud-cephstorage-1

      This command runs the config-download playbooks and configures the composable services on the Ceph Storage node. This step does not upgrade the Ceph Storage nodes to Red Hat Ceph Storage 4. The Red Hat Ceph Storage 4 upgrade occurs in a later procedure.

4. Select the final Ceph Storage node and upgrade the operating system:

   1. Run the external upgrade command with the ceph_systemd tag:

      $ openstack overcloud external-upgrade run --stack STACK NAME --tags ceph_systemd -e ceph_ansible_limit=overcloud-cephstorage-2

      This command performs the following functions:

      • Changes the systemd units that control the Ceph Storage containers to use Podman management.
      • Limits actions to the selected node using the ceph_ansible_limit variable.

      This step is a preliminary measure to prepare the Ceph Storage services for The leapp upgrade.

   2. Run the upgrade command with the system_upgrade tag:

      $ openstack overcloud upgrade run --stack STACK NAME --tags system_upgrade --limit overcloud-cephstorage-2

      This command performs the following actions:

      • Performs a Leapp upgrade of the operating system.
      • Performs a reboot as a part of the Leapp upgrade.

   3. Run the upgrade command with no tags:

      $ openstack overcloud upgrade run --stack STACK NAME --limit overcloud-cephstorage-2

      This command runs the config-download playbooks and configures the composable services on the Ceph Storage node. This step does not upgrade the Ceph Storage nodes to Red Hat Ceph Storage 4. The Red Hat Ceph Storage 4 upgrade occurs in a later procedure.

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. Migrate your instances. For more information on migration strategies, see Migrating virtual machines between Compute nodes.

3. Run the upgrade command with the system_upgrade tag:

   $ openstack overcloud upgrade run --stack STACK NAME --tags system_upgrade --limit overcloud-compute-0

   This command performs the following actions:

   • Performs a Leapp upgrade of the operating system.
   • Performs a reboot as a part of the Leapp upgrade.

4. Run the upgrade command with no tags:

   $ openstack overcloud upgrade run --stack STACK NAME --limit overcloud-compute-0

   This command performs the Red Hat OpenStack Platform upgrade.

5. To upgrade multiple Compute nodes in parallel, set the --limit option to a comma-separated list of nodes that you want to upgrade. First perform the system_upgrade task:

   $ openstack overcloud upgrade run --stack STACK NAME --tags system_upgrade --limit overcloud-compute-0,overcloud-compute-1,overcloud-compute-2

   Then perform the standard OpenStack service upgrade:

   $ openstack overcloud upgrade run --stack STACK NAME  --limit overcloud-compute-0,overcloud-compute-1,overcloud-compute-2

Procedure

1. Source the stackrc file:

   $ source ~/stackrc

2. Edit the containers-prepare-parameter.yaml file and remove the following parameters and their values:

   • ceph3_namespace
   • ceph3_tag
   • ceph3_image
   • name_prefix_stein
   • name_suffix_stein
   • namespace_stein
   • tag_stein
3. To re-enable fencing in your overcloud, set the EnableFencing parameter to true in the fencing.yaml environment file.

4. Run the upgrade finalization command:

   $ openstack overcloud upgrade converge \
       --stack STACK NAME \
       --templates \
       -e ENVIRONMENT FILE
       …​
       -e /home/stack/templates/upgrades-environment.yaml \
       -e /home/stack/templates/rhsm.yaml \
       -e /home/stack/containers-prepare-parameter.yaml \
       -e /usr/share/openstack-tripleo-heat-templates/environments/services/neutron-ovs.yaml \
       …​

   Include the following options relevant to your environment:

   • The environment file (upgrades-environment.yaml) with the upgrade-specific parameters (-e).
   • The environment file (fencing.yaml) with the EnableFencing parameter set to true.
   • The environment file (rhsm.yaml) with the registration and subscription parameters (-e).
   • The environment file (containers-prepare-parameter.yaml) with your new container image locations (-e). In most cases, this is the same environment file that the undercloud uses.
   • The environment file (neutron-ovs.yaml) to maintain OVS compatibility.
   • Any custom configuration environment files (-e) relevant to your deployment.
   • If applicable, your custom roles (roles_data) file using --roles-file.
   • If applicable, your composable network (network_data) file using --networks-file.
   • If you use a custom stack name, pass the name with the --stack option.
5. Wait until the stack synchronization completes.