kayobe/ansible/overcloud-deprovision.yml

---
# Use bifrost to deprovision the overcloud nodes.

- name: Ensure the overcloud nodes are deprovisioned
  hosts: overcloud
  tags:
    - deprovision
  vars:
    # Set to False to avoid waiting for the nodes to become active.
    wait_available: True
    wait_available_timeout: 600
    wait_available_interval: 10
    # List of states from which we can get to available.
    deprovisionable_states:
      - available
      - active
      - error
      - wait call-back
      - deploying
      - deploy failed
    # List of valid states while a node is being deprovisioned.
    deleting_states:
      # The API is asynchronous, so allow the initial state.
      - active
      - deleting
      - cleaning
      - clean wait
    # Retries to use when using Ironic API and hitting node locked errors.
    ironic_retries: 6
    ironic_retry_interval: 5
    seed_host: "{{ groups['seed'][0] }}"
  vars_prompt:
    - name: confirm_deprovision
      prompt: |
        The following hosts will be deprovisioned:
        {{ play_hosts | join(', ') }}
        If you want to proceed type: yes        
      default: "no"
      private: false
  gather_facts: no
  tasks:
    - name: Fail if deprovision is not confirmed
      assert:
        that: confirm_deprovision == 'yes'
        msg: >
          Deprovision has not been confirmed. You must either type 'yes' when
          prompted, or set ``confirm_deprovision=yes``.          

    - name: Check the ironic node's initial provision state
      command: >
        docker exec bifrost_deploy
        bash -c '
        export OS_CLOUD=bifrost &&
        export OS_BAREMETAL_API_VERSION=1.34 &&
        export BIFROST_INVENTORY_SOURCE=ironic &&
        export BIFROST_NODE_NAMES="{{ inventory_hostname }}" &&
        ansible baremetal
        --connection local
        --inventory /etc/bifrost/inventory/
        -e @/etc/bifrost/bifrost.yml
        -e @/etc/bifrost/dib.yml
        --limit {{ inventory_hostname }}
        -m command
        -a "baremetal node show {% raw %}{{ inventory_hostname }}{% endraw %} -f value -c provision_state"'        
      register: show_result
      changed_when: False
      delegate_to: "{{ seed_host }}"
      vars:
        # NOTE: Without this, the seed's ansible_host variable will not be
        # respected when using delegate_to.
        ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"

    - name: Set a fact containing the ironic node's initial provision state
      set_fact:
        initial_provision_state: "{{ show_result.stdout_lines[1] }}"

    - name: Fail if the ironic node is in an unexpected provision state
      fail:
        msg: >
          Ironic node for {{ inventory_hostname }} is in an unexpected
          initial provision state: {{ initial_provision_state }}. Expected
          states are: {{ deprovisionable_states | join(',') }}.          
      when: initial_provision_state not in deprovisionable_states

    - name: Ensure the ironic node is deprovisioned
      command: >
        docker exec bifrost_deploy
        bash -c '
        export OS_CLOUD=bifrost &&
        export BIFROST_INVENTORY_SOURCE=ironic &&
        export BIFROST_NODE_NAMES="{{ inventory_hostname }}" &&
        ansible baremetal -vvvv
        --connection local
        --inventory /etc/bifrost/inventory/
        -e @/etc/bifrost/bifrost.yml
        -e @/etc/bifrost/dib.yml
        --limit {{ inventory_hostname }}
        -m command
        -a "baremetal node undeploy {% raw %}{{ inventory_hostname }}{% endraw %}"'        
      register: delete_result
      until: delete_result is successful or 'is locked by host' in delete_result.stdout
      retries: "{{ ironic_retries }}"
      delay: "{{ ironic_retry_interval }}"
      when: initial_provision_state != 'available'
      delegate_to: "{{ seed_host }}"
      vars:
        # NOTE: Without this, the seed's ansible_host variable will not be
        # respected when using delegate_to.
        ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"

    - name: Wait for the ironic node to become available
      command: >
        docker exec bifrost_deploy
        bash -c '
        export OS_CLOUD=bifrost &&
        export OS_BAREMETAL_API_VERSION=1.34 &&
        export BIFROST_INVENTORY_SOURCE=ironic &&
        export BIFROST_NODE_NAMES="{{ inventory_hostname }}" &&
        ansible baremetal
        --connection local
        --inventory /etc/bifrost/inventory/
        -e @/etc/bifrost/bifrost.yml
        -e @/etc/bifrost/dib.yml
        --limit {{ inventory_hostname }}
        -m command
        -a "baremetal node show {% raw %}{{ inventory_hostname }}{% endraw %} -f value -c provision_state"'        
      register: show_result
      # Wait until the node is no longer in one of the deleting states.
      until: not show_result.stdout_lines[1:] | intersect(deleting_states)
      retries: "{{ wait_available_timeout // wait_available_interval }}"
      delay: "{{ wait_available_interval }}"
      when:
        - wait_available | bool
        - initial_provision_state != 'available'
      changed_when: False
      delegate_to: "{{ seed_host }}"
      vars:
        # NOTE: Without this, the seed's ansible_host variable will not be
        # respected when using delegate_to.
        ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"

    - name: Set a fact containing the ironic node's final provision state
      set_fact:
        final_provision_state: "{{ show_result.stdout_lines[1] }}"
      when:
        - wait_available | bool
        - initial_provision_state != 'available'

    - name: Fail if the ironic node is not available
      fail:
        msg: >
          Ironic node for {{ inventory_hostname }} is in an unexpected
          provision state after deprovisioning.  Ironic provision state:
          {{ final_provision_state }}. Expected: available.          
      when:
        - wait_available | bool
        - initial_provision_state != 'available'
        - final_provision_state != 'available'