Merge "Add ansible playbook for removing compute"

ansible_tools/README.rst

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+OpenStack-Ansible Operator Ansible Tools
+========================================
+
+These are Ansible playbooks and roles that are designed to
+help OSA operators perform various tasks against their OSA
+environment.

ansible_tools/playbooks/ansible.cfg

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+[defaults]
+# Additional plugins
+lookup_plugins = /etc/ansible/plugins/lookup
+filter_plugins = /etc/ansible/plugins/filter
+action_plugins = /etc/ansible/plugins/action
+library = /etc/ansible/plugins/library
+
+# Fact caching
+gathering = smart
+fact_caching = jsonfile
+fact_caching_connection = /etc/openstack_deploy/ansible_facts
+fact_caching_timeout = 86400
+
+inventory = /opt/openstack-ansible/playbooks/inventory
+host_key_checking = False
+
+# Set color options
+nocolor = 0
+
+# SSH timeout
+timeout = 120
+
+[ssh_connection]
+pipelining = True

ansible_tools/playbooks/remove_compute_node.yml

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+---
+# 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 {{ neutron_agent_list_results.stdout }}
+      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
+
+