[postgresql] dont restart postgres, only reload it

host_vars/gulp.cachan-adm.crans.org.yml

@@ -13,6 +13,7 @@ debian_mirror: http://172.17.10.202/debian
 loc_psql:
   subnets:
     - 172.17.10.0/24
+    - fd00:0:0:3010::/64
   version: 11
   hosts:
     - { db: re2o, user: re2o }

roles/postgresql/handlers/main.yml

 ---
-- name: restart postgresql
-  systemd:
-    name: postgresql@{{ psql.version }}-main
-    state: restarted
-    enabled: true
+- name: reload postgresql
+  command: /usr/bin/pg_ctlcluster {{ psql.version }} main reload

roles/postgresql/tasks/main.yml

@@ -36,7 +36,7 @@
     owner: postgres
     group: postgres
   notify:
-    - restart postgresql
+    - reload postgresql
 
 - name: Master of configuration of postgresql {{ psql.version }}
   template:
@@ -49,5 +49,5 @@
    - pg_hba.conf
    - pg_ident.conf
   notify:
-    - restart postgresql
+    - reload postgresql
   when: 'not(psql.replica | default(False))'