Additional small changes in role/mariadb

- Replace hardcoded haproxy monitor user with variable.
 - Rename mariadb_backup variable to mariadb_backup_possible.
 - Drop creation of monitor user in handlers as this is
   now handled in register.yml for good reason.

Change-Id: I255a79d36ae18ca42d0befd00b235ca509197db3

ansible/roles/mariadb/defaults/main.yml

@@ -113,7 +113,7 @@ mariadb_backup_host: "{{ groups[mariadb_shard_group][0] }}"
 mariadb_backup_database_schema: "PERCONA_SCHEMA"
 mariadb_backup_database_user: "{% if mariadb_loadbalancer == 'haproxy' %}backup{% else %}backup_{{ mariadb_shard_name }}{% endif %}"
 mariadb_backup_type: "full"
-mariadb_backup: "{{ mariadb_loadbalancer != 'haproxy' or inventory_hostname in mariadb_default_database_shard_hosts }}"
+mariadb_backup_possible: "{{ mariadb_loadbalancer != 'haproxy' or inventory_hostname in mariadb_default_database_shard_hosts }}"
 
 ####################
 # Clustercheck

ansible/roles/mariadb/handlers/main.yml

@@ -48,21 +48,6 @@
   no_log: true
   listen: Bootstrap MariaDB cluster
 
-- name: Creating haproxy mysql user
-  become: true
-  kolla_toolbox:
-    module_name: mysql_user
-    module_args:
-      login_host: "{{ api_interface_address }}"
-      login_port: "{{ mariadb_port }}"
-      login_user: "{{ database_user }}"
-      login_password: "{{ database_password }}"
-      name: "{{ mariadb_monitor_user }}"
-      password: ""
-      host: "%"
-      priv: "*.*:USAGE"
-  listen: Bootstrap MariaDB cluster
-
 - name: Restart MariaDB on existing cluster members
   include_tasks: 'restart_services.yml'
   when:

ansible/roles/mariadb/tasks/backup.yml

@@ -20,4 +20,4 @@
       - "kolla_logs:/var/log/kolla/"
   when:
     - inventory_hostname == mariadb_backup_host
-    - mariadb_backup | bool
+    - mariadb_backup_possible | bool

ansible/roles/mariadb/templates/wsrep-notify.sh.j2

@@ -5,7 +5,7 @@ USER={{ database_user }}
 PSWD={{ database_password }}
 HOST={{ api_interface_address }}
 PORT={{ mariadb_port }}
-LB_USER=haproxy
+LB_USER={{ mariadb_monitor_user }}
 
 ENABLE_LB="UPDATE mysql.user SET User='${LB_USER}' WHERE User='${LB_USER}_blocked';"
 DISABLE_LB="UPDATE mysql.user SET User='${LB_USER}_blocked' WHERE User='${LB_USER}';"