Use the utility host for db setup tasks

Move it to the service setup host (defaults to utility[0]) instead
of the galera[0] host, and use galera_address (defaults to internal VIP)
as the endpoint instead of a local connection on the db host.

Change-Id: Ic4a2dfeeb022e1dbe0b1ba8aa0d0dd5feb7a8ffe

defaults/main.yml

@@ -87,13 +87,15 @@ nova_management_address: "127.0.0.1"
 # nova_system_group_gid = <GID>
 
 ## Database info
-nova_db_setup_host: "{{ ('galera_all' in groups) | ternary(groups['galera_all'][0], 'localhost') }}"
+nova_db_setup_host: "{{ openstack_db_setup_host | default('localhost') }}"
+nova_db_setup_python_interpreter: "{{ openstack_db_setup_python_interpreter | default((nova_db_setup_host == 'localhost') | ternary(ansible_playbook_python, ansible_python['executable'])) }}"
 nova_galera_address: "{{ galera_address | default('127.0.0.1') }}"
 nova_galera_user: nova
 nova_galera_database: nova
 nova_db_max_overflow: 10
 nova_db_max_pool_size: 120
 nova_db_pool_timeout: 30
+nova_galera_port: 3306
 # Toggle whether nova connects via an encrypted connection
 nova_galera_use_ssl: "{{ galera_use_ssl | default(False) }}"
 # The path where to store the database server CA certificate

tasks/db_setup.yml

@@ -22,12 +22,16 @@
 
 - name: Setup Database Service (MariaDB)
   delegate_to: "{{ _oslodb_setup_host }}"
+  vars:
+    ansible_python_interpreter: "{{ _oslodb_ansible_python_interpreter }}"
   tags:
     - common-mariadb
   block:
     - name: Create database for service
       mysql_db:
         name: "{{ item.name }}"
+        login_host: "{{ _oslodb_setup_endpoint | default(omit) }}"
+        login_port: "{{ _oslodb_setup_port | default(omit) }}"
       loop: "{{ _oslodb_databases }}"
       no_log: true
 
@@ -38,5 +42,7 @@
         host: "{{ item.1.host | default('%') }}"
         priv: "{{ item.0.name }}.*:{{ item.1.priv | default('ALL') }}"
         append_privs: yes
+        login_host: "{{ _oslodb_setup_endpoint | default(omit) }}"
+        login_port: "{{ _oslodb_setup_port | default(omit) }}"
       loop: "{{ _oslodb_databases | subelements('users') }}"
       no_log: true

tasks/main.yml

@@ -75,6 +75,9 @@
     - "inventory_hostname == ((groups[nova_services['nova-conductor']['group']] | intersect(ansible_play_hosts)) | list)[0]"
   vars:
     _oslodb_setup_host: "{{ nova_db_setup_host }}"
+    _oslodb_ansible_python_interpreter: "{{ nova_db_setup_python_interpreter }}"
+    _oslodb_setup_endpoint: "{{ nova_galera_address }}"
+    _oslodb_setup_port: "{{ nova_galera_port }}"
     _oslodb_databases:
       - name: "{{ nova_galera_database }}"
         users: