kayobe/ansible/overcloud-deprovision.yml

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

- name: Ensure the overcloud controllers are deprovisioned
  hosts: controllers
  vars:
    # Set to False to avoid waiting for the controllers 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
  gather_facts: no
  tasks:
    - name: Check the ironic node's initial provision state
      command: >
        docker exec bifrost_deploy
        bash -c '. env-vars &&
        export OS_URL=$IRONIC_URL &&
        export OS_TOKEN=$OS_AUTH_TOKEN &&
        export BIFROST_INVENTORY_SOURCE=ironic &&
        ansible baremetal
        --connection local
        --inventory /etc/bifrost/inventory/
        -e @/etc/bifrost/bifrost.yml
        -e @/etc/bifrost/dib.yml
        --limit {{ inventory_hostname }}
        -m command
        -a "openstack baremetal node show {% raw %}{{ inventory_hostname }}{% endraw %} -f value -c provision_state"'        
      register: show_result
      changed_when: False
      # We use this convoluted construct to work around Ansible's limitations
      # in evaluation of the delegate_to keyword.
      delegate_to: "{{ item }}"
      with_items:
        - "{{ hostvars[groups['seed'][0]].ansible_host }}"

    - name: Set a fact containing the ironic node's initial provision state
      set_fact:
        initial_provision_state: "{{ show_result.results[0].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 the ironic node is deprovisioned
      command: >
        docker exec bifrost_deploy
        bash -c '. env-vars &&
        export BIFROST_INVENTORY_SOURCE=ironic &&
        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 "ironic node-set-provision-state {% raw %}{{ inventory_hostname }}{% endraw %} deleted"'        
      register: delete_result
      until: "{{ delete_result | success or 'is locked by host' in delete_result.stdout }}"
      retries: "{{ ironic_retries }}"
      delay: "{{ ironic_retry_interval }}"
      when: "{{ initial_provision_state != 'available' }}"
      delegate_to: "{{ item }}"
      with_items:
        - "{{ hostvars[groups['seed'][0]].ansible_host }}"

    - name: Wait for the ironic node to become available
      command: >
        docker exec bifrost_deploy
        bash -c '. env-vars &&
        export OS_URL=$IRONIC_URL &&
        export OS_TOKEN=$OS_AUTH_TOKEN &&
        export BIFROST_INVENTORY_SOURCE=ironic &&
        ansible baremetal
        --connection local
        --inventory /etc/bifrost/inventory/
        -e @/etc/bifrost/bifrost.yml
        -e @/etc/bifrost/dib.yml
        --limit {{ inventory_hostname }}
        -m command
        -a "openstack 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: "{{ item }}"
      with_items:
        - "{{ hostvars[groups['seed'][0]].ansible_host }}"

    - name: Set a fact containing the ironic node's final provision state
      set_fact:
        final_provision_state: "{{ show_result.results[0].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' }}"