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.

Change-Id: Ibda9982a85b967dac091bdcd0e115b3c6333361b

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/gnocchi_db_setup.yml

@@ -1,46 +0,0 @@
----
-# 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: Create DB for service
-  mysql_db:
-    login_user: "{{ galera_root_user }}"
-    login_password: "{{ galera_root_password }}"
-    login_host: "{{ gnocchi_galera_address }}"
-    name: "{{ gnocchi_galera_database }}"
-    state: "present"
-  delegate_to: "{{ gnocchi_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: "{{ gnocchi_galera_address }}"
-    name: "{{ gnocchi_galera_user }}"
-    password: "{{ gnocchi_container_mysql_password }}"
-    host: "{{ item }}"
-    state: "present"
-    priv: "{{ gnocchi_galera_database }}.*:ALL"
-  delegate_to: "{{ gnocchi_db_setup_host }}"
-  with_items:
-    - "localhost"
-    - "%"
-  no_log: True
-
-- name: Perform a Gnocchi DB sync
-  command: "{{ gnocchi_bin }}/gnocchi-upgrade {{ gnocchi_db_sync_options }}"
-  become: yes
-  become_user: "{{ gnocchi_system_user_name }}"
-  changed_when: false

tasks/gnocchi_db_sync.yml

@@ -0,0 +1,20 @@
+---
+# 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: Perform a Gnocchi DB sync
+  command: "{{ gnocchi_bin }}/gnocchi-upgrade {{ gnocchi_db_sync_options }}"
+  become: yes
+  become_user: "{{ gnocchi_system_user_name }}"
+  changed_when: false

tasks/main.yml

@@ -25,6 +25,20 @@
   tags:
     - always
 
+- import_tasks: db_setup.yml
+  when:
+    - inventory_hostname == groups['gnocchi_all'][0]
+  vars:
+    _oslodb_setup_host: "{{ gnocchi_db_setup_host }}"
+    _oslodb_databases:
+      - name: "{{ gnocchi_galera_database }}"
+        users:
+          - username: "{{ gnocchi_galera_user }}"
+            password: "{{ gnocchi_container_mysql_password }}"
+  tags:
+    - common-db
+    - gnocchi-config
+
 - import_tasks: gnocchi_pre_install.yml
   tags:
     - gnocchi-install
@@ -89,7 +103,7 @@
 
 # N.B. Must occur after identity setup, as this may perform calls to Swift.
 #      Similarly, when using Ceph, must occur after Ceph setup.
-- import_tasks: gnocchi_db_setup.yml
+- import_tasks: gnocchi_db_sync.yml
   when:
     - inventory_hostname == groups['gnocchi_all'][0]
     - not gnocchi_identity_only | bool