Constraint for the DB execution.

defaults/main.yml

@@ -5,3 +5,4 @@ mei_generator_compose_url: 'https://raw.githubusercontent.com/CMCC-Foundation/bl
 #cmmc_mysql_root_password: 'set it in a vault file'
 #cmmc_mysql_password: 'set it in a vault file'
 #mei_generator_db_constraints: '[node.labels.db_data==mei_generator]'
+mei_generator_db_executor: 'docker-exec2.int.d4science.net'

tasks/main.yml

@@ -28,6 +28,13 @@
         state: absent
       delegate_to: localhost
 
+    - name: Add the label that will be used as a constraint for the MySQL DB
+      docker_node:
+        hostname: '{{ mei_generator_db_executor }}'
+        labels:
+          mei_generator_db_data: 'bc_mei_generator'
+        labels_state: 'merge'
+
     - name: Start the MEI Generator stack
       docker_stack:
         name: '{{ mei_generator_docker_stack_name }}'