remove_compute_node.yml

---
# Copyright 2014, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: Remove a compute node from the OSA environment
  hosts: utility[0]
  user: root
  pre_tasks:
    - name: Fail if host_to_be_removed is not defined
      fail:
        msg: "host_to_be_removed must be defined as ansible user variable"
      when: host_to_be_removed is not defined
    - name: Find ID of the nova-compute service we want to remove
      shell: |
        . {{ ansible_env.HOME }}/openrc
        openstack compute service list | grep {{ host_to_be_removed }} | awk '{print $2}'
      register: results
      changed_when: results.rc == 0 and results.stdout_lines|length > 0
      failed_when: results.rc > 0 or results.stdout_lines|length == 0
    - name: Find ID of the neutron agent service we want to remove
      shell: |
        . {{ ansible_env.HOME }}/openrc
        neutron agent-list | grep {{ host_to_be_removed }} | awk '{print $2}'
      register: neutron_agent_list_results
      changed_when: neutron_agent_list_results.rc == 0
      failed_when: neutron_agent_list_results.rc > 0
  tasks:
    - name: Remove the nova-compute service from compute node
      shell: |
        . {{ ansible_env.HOME }}/openrc
        openstack compute service delete {{ results.stdout }}
      register: compute_delete_result
      changed_when: compute_delete_result.rc
      failed_when: compute_delete_result.rc > 0
    - name: Remove neutron agent service on {{ host_to_be_removed }}
      shell: |
        . {{ ansible_env.HOME }}/openrc
        neutron agent-delete {{ item }}
      with_items: "{{ neutron_agent_list_results.stdout_lines }}"
      register: neutron_delete_results
      changed_when: neutron_delete_results.rc == 0
      failed_when: neutron_delete_results.rc > 0
    - name: Delete the host from the OSA inventory file
      shell: |
         python /opt/openstack-ansible/scripts/inventory-manage.py -r {{ host_to_be_removed }}
      register: inventory_manage_output
      delegate_to: 127.0.0.1
      connection: local
      failed_when : inventory_manage_output.rc > 0