db_setup: refactor database setup to a common file

This patch refactors the database creation to db_setup.yml which
will eventually be managed by openstack-ansible-tests.

This also re-orders the mq_setup to be done earlier so these system
level dependencies are ready before service activation.

We have been using run_once only for keystone role. As we have a
keystone group in the inventory, we re replacing run_once for the
conditionals to match the pattern across all the other roles.

Change-Id: Idb5ea861a87fe077f7c716f1157acd8e39257c5b

defaults/main.yml

@@ -468,6 +468,7 @@ keystone_uwsgi_init_overrides: {}
 ## Service Name-Group Mapping
 keystone_services:
   keystone-wsgi-public:
+    group: keystone_all
     service_name: "keystone-wsgi-public"
     init_config_overrides: "{{ keystone_uwsgi_init_overrides }}"
     execstarts: "{{ keystone_uwsgi_bin }}/uwsgi --autoload --ini /etc/uwsgi/keystone-wsgi-public.ini"

tasks/db_setup.yml

@@ -0,0 +1,41 @@
+---
+# Copyright 2019, VEXXHOST, 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.
+
+# WARNING:
+# This file is maintained in the openstack-ansible-tests repository.
+# https://git.openstack.org/cgit/openstack/openstack-ansible-tests/tree/sync/tasks/db_setup.yml
+# If you need to modify this file, update the one in the openstack-ansible-tests
+# repository. Once it merges there, the changes will automatically be proposed to
+# all the repositories which use it.
+
+- name: Setup Database Service (MariaDB)
+  delegate_to: "{{ _oslodb_setup_host }}"
+  tags:
+    - common-mariadb
+  block:
+    - name: Create database for service
+      mysql_db:
+        name: "{{ item.name }}"
+      loop: "{{ _oslodb_databases }}"
+
+    - name: Grant access to the database for the service
+      mysql_user:
+        name: "{{ item.1.username }}"
+        password: "{{ item.1.password }}"
+        host: "{{ item.1.host | default('%') }}"
+        priv: "{{ item.0.name }}.*:{{ item.1.priv | default('ALL') }}"
+        append_privs: yes
+      loop: "{{ _oslodb_databases | subelements('users') }}"
+      no_log: true

tasks/keystone_db_sync.yml

@@ -13,34 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-- name: Create DB for service
-  mysql_db:
-    login_user: "{{ galera_root_user }}"
-    login_password: "{{ galera_root_password }}"
-    login_host: "{{ keystone_galera_address }}"
-    login_port: "{{ keystone_galera_port }}"
-    name: "{{ keystone_galera_database }}"
-    state: "present"
-  delegate_to: "{{ keystone_db_setup_host }}"
-  no_log: True
-
-- name: Grant access to the DB for the service
-  mysql_user:
-    login_user: "{{ galera_root_user }}"
-    login_password: "{{ galera_root_password }}"
-    login_host: "{{ keystone_galera_address }}"
-    login_port: "{{ keystone_galera_port }}"
-    name: "{{ keystone_galera_user }}"
-    password: "{{ keystone_container_mysql_password }}"
-    host: "{{ item }}"
-    state: "present"
-    priv: "{{ keystone_galera_database }}.*:ALL"
-  delegate_to: "{{ keystone_db_setup_host }}"
-  with_items:
-    - "localhost"
-    - "%"
-  no_log: True
-
 - name: Check current state of Keystone DB
   command: "{{ keystone_bin }}/keystone-manage db_sync --check"
   become: yes

tasks/main.yml

@@ -48,6 +48,40 @@
   tags:
     - always
 
+- import_tasks: db_setup.yml
+  when:
+    - "keystone_services['keystone-wsgi-public']['group'] in group_names"
+    - "inventory_hostname == ((groups[keystone_services['keystone-wsgi-public']['group']] | intersect(ansible_play_hosts)) | list)[0]"
+  vars:
+    _oslodb_setup_host: "{{ keystone_db_setup_host }}"
+    _oslodb_databases:
+      - name: "{{ keystone_galera_database }}"
+        users:
+          - username: "{{ keystone_galera_user }}"
+            password: "{{ keystone_container_mysql_password }}"
+  tags:
+    - common-db
+    - keystone-config
+
+- import_tasks: mq_setup.yml
+  when:
+    - "keystone_services['keystone-wsgi-public']['group'] in group_names"
+    - "inventory_hostname == ((groups[keystone_services['keystone-wsgi-public']['group']] | intersect(ansible_play_hosts)) | list)[0]"
+  vars:
+    _oslomsg_rpc_setup_host: "{{ keystone_oslomsg_rpc_setup_host }}"
+    _oslomsg_rpc_userid: "{{ keystone_oslomsg_rpc_userid }}"
+    _oslomsg_rpc_password: "{{ keystone_oslomsg_rpc_password }}"
+    _oslomsg_rpc_vhost: "{{ keystone_oslomsg_rpc_vhost }}"
+    _oslomsg_rpc_transport: "{{ keystone_oslomsg_rpc_transport }}"
+    _oslomsg_notify_setup_host: "{{ keystone_oslomsg_notify_setup_host }}"
+    _oslomsg_notify_userid: "{{ keystone_oslomsg_notify_userid }}"
+    _oslomsg_notify_password: "{{ keystone_oslomsg_notify_password }}"
+    _oslomsg_notify_vhost: "{{ keystone_oslomsg_notify_vhost }}"
+    _oslomsg_notify_transport: "{{ keystone_oslomsg_notify_transport }}"
+  tags:
+    - common-mq
+    - keystone-config
+
 - include_tasks: keystone_pre_install.yml
   tags:
     - keystone-install
@@ -78,7 +112,7 @@
   tags:
     - keystone-config
 
-- include_tasks: keystone_db_setup.yml
+- include_tasks: keystone_db_sync.yml
   when:
     - "keystone_database_enabled | bool"
   tags:
@@ -94,23 +128,6 @@
   tags:
     - keystone-config
 
-- import_tasks: mq_setup.yml
-  run_once: yes
-  vars:
-    _oslomsg_rpc_setup_host: "{{ keystone_oslomsg_rpc_setup_host }}"
-    _oslomsg_rpc_userid: "{{ keystone_oslomsg_rpc_userid }}"
-    _oslomsg_rpc_password: "{{ keystone_oslomsg_rpc_password }}"
-    _oslomsg_rpc_vhost: "{{ keystone_oslomsg_rpc_vhost }}"
-    _oslomsg_rpc_transport: "{{ keystone_oslomsg_rpc_transport }}"
-    _oslomsg_notify_setup_host: "{{ keystone_oslomsg_notify_setup_host }}"
-    _oslomsg_notify_userid: "{{ keystone_oslomsg_notify_userid }}"
-    _oslomsg_notify_password: "{{ keystone_oslomsg_notify_password }}"
-    _oslomsg_notify_vhost: "{{ keystone_oslomsg_notify_vhost }}"
-    _oslomsg_notify_transport: "{{ keystone_oslomsg_notify_transport }}"
-  tags:
-    - common-mq
-    - keystone-config
-
 - include_tasks: keystone_ssl.yml
   tags:
     - keystone-config