alert to remember that the ssh setup has a manual step

defaults/main.yml

@@ -123,7 +123,8 @@ psql_db_pwd: "We cannot save the password into the repository. Use another varia
 #
 # Those need to be installed on the postgresql server.
 #
-pgpool_fixed_version: '=4.1.4-2.pgdg18.04+1'
+pgpool_version: '4.1.4'
+pgpool_fixed_version: '={{ pgpool_version }}-2.pgdg18.04+1'
 postgresql_pgpool_pkgs:
   - 'postgresql-{{ psql_version }}-pgpool2{{ pgpool_fixed_version }}'
 

tasks/postgres_pgpool.yml

@@ -37,6 +37,10 @@
   - name: Create the ssh keys for the recovery user
     user: user={{ pgpool_recovery_user }} generate_ssh_key=yes ssh_key_bits=2048 ssh_key_file=.ssh/id_rsa ssh_key_type=rsa
 
+  - name: Remember to trust the ssh keys between the two nodes
+    debug:
+      msg: "Remember to trust the ssh keys between the two nodes. You have to setup the .ssh/authorized_keys manually for the user {{ pgpool_recovery_user }}"
+
   - name: Install the pgpool recovery and remote restart scripts. They assume that the postgresql hosts can talk to each other
     template: src={{ item.1 }}.j2 dest={{ item.0.backend_data_directory }}/{{ item.1 }} owner=postgres group=postgres mode=0500
     with_nested: 

templates/pgpool.conf.j2

@@ -393,7 +393,11 @@ failback_command = ''
 								   #   %R = new master database cluster path
                                    #   %% = '%' character
 
+{% if pgpool_version is version_compare('4.1.4', '>=')
+failover_on_backend_error = {{ pgpool_fail_over_on_backend_error }}
+{% else %}
 fail_over_on_backend_error = {{ pgpool_fail_over_on_backend_error }}
+{% endif %}
                                    # Initiates failover when reading/writing to the
                                    # backend communication socket fails
                                    # If set to off, pgpool will report an