create tasks for cron extension

roles/common/tasks/postgres_cron.yml

@@ -8,6 +8,14 @@
     state: latest
     update_cache: yes
 
+- name: "Stop postgresql service"
+  tags:
+    - install
+    - timescaledb_install
+  systemd:
+    name: postgresql
+    state: stop
+
 - name: "Add pg_cron to shared_preload_libraries"
   tags:
     - install
@@ -25,7 +33,7 @@
     dest: /etc/postgresql/{{ postgresql_version }}/main/postgresql.conf
     line: "cron.database_name = '{{ timescaledb_database_name }}'"
 
-- name: "Define cron database name"
+- name: "Define cron timezone"
   tags:
     - install
     - timescaledb_install    
@@ -47,11 +55,11 @@
     - timescaledb_install
   postgresql_query:
     db: "{{ timescaledb_database_name }}"
-    login_user: "postgres"
-    login_password: "{{ postgresql_admin_password }}"
+    login_user: "{{ timescaledb_database_user }}"
+    login_password: "{{ timescaledb_database_password }}"
+    login_host: "{{ lxc_ip }}"
     query:
       - CREATE EXTENSION pg_cron;
-      - GRANT USAGE ON SCHEMA cron TO {{ timescaledb_database_user }};
 
 - name: "Restart postgresql service"
   tags: