Replace config-external with a JSON file for Galera

Change-Id: I82abc9a31571376679c4f463f5a6ae77a49ec2f6
Partially-Implements: blueprint replace-config-external

ansible/roles/mariadb/tasks/bootstrap.yml

@@ -66,7 +66,7 @@
     insecure_registry: "{{ docker_insecure_registry }}"
     name: mariadb
     image: "{{ mariadb_image_full }}"
-    volumes: "{{ node_config_directory }}/mariadb/:/opt/kolla/mariadb/:ro"
+    volumes: "{{ node_config_directory }}/mariadb/:/opt/kolla/config_files/:ro"
     volumes_from:
       - "mariadb_data"
     env:

ansible/roles/mariadb/tasks/config.yml

@@ -7,3 +7,8 @@
     config_template_dest:
       - "{{ node_templates_directory }}/mariadb/galera.cnf_minimal"
     config_dest: "{{ node_config_directory }}/mariadb/galera.cnf"
+
+- name: Copying Mariadb JSON configuration file
+  template:
+    src: "roles/mariadb/templates/mariadb.json.j2"
+    dest: "{{ node_config_directory }}/mariadb/config.json"

ansible/roles/mariadb/tasks/start.yml

@@ -13,7 +13,7 @@
     insecure_registry: "{{ docker_insecure_registry }}"
     name: mariadb
     image: "{{ mariadb_image_full }}"
-    volumes: "{{ node_config_directory }}/mariadb/:/opt/kolla/mariadb/:ro"
+    volumes: "{{ node_config_directory }}/mariadb/:/opt/kolla/config_files/:ro"
     volumes_from:
       - "mariadb_data"
     env:

ansible/roles/mariadb/templates/mariadb.json.j2

@@ -0,0 +1,12 @@
+{% set mysql_dir = 'mysql/conf.d' if kolla_base_distro in ['ubuntu', 'debian'] else 'my.cnf.d' %}
+{
+    "command": "/usr/bin/mysqld_safe",
+    "config_files": [
+        {
+            "source": "/opt/kolla/config_files/galera.cnf",
+            "dest": "/etc/{{ mysql_dir }}/galera.cnf",
+            "owner": "mysql",
+            "perm": "0600"
+        }
+    ]
+}

docker/mariadb/start.sh

@@ -2,16 +2,14 @@
 
 set -o errexit
 
-CMD="/usr/bin/mysqld_safe"
-ARGS=""
-
-# loading common functions
+# Loading common functions
 source /opt/kolla/kolla-common.sh
 
-# Execute config strategy
-set_configs
+# Generate run command
+python /opt/kolla/set_configs.py
+CMD=$(cat /command_options)
 
-# loading functions
+# Loading functions
 source /opt/kolla/config/config-galera.sh
 
 chown mysql: /var/lib/mysql
@@ -22,6 +20,9 @@ if [[ "${!KOLLA_BOOTSTRAP[@]}" ]] && [[ ! -e /var/lib/mysql/cluster.exists ]]; t
     touch /var/lib/mysql/cluster.exists
     populate_db
     bootstrap_db
+    exec $CMD $ARGS
+    exit 0
 fi
 
-exec $CMD $ARGS
+echo "Running command: ${CMD}"
+exec $CMD