Some code cleanup.

tasks/postgresql-config.yml

@@ -1,40 +1,56 @@
 ---
-- name: Data directory for Deb/Ubuntu
+- name: postgresql-config | Data directory for Deb/Ubuntu
-  block: 
-  - name: Check if the new postgresql data directory exists
-    stat: path={{ psql_data_dir }}
-    register: postgresql_data_dir
-
-  - name: Stop the postgresql service while reconfiguring the data directory
-    service: name=postgresql state=stopped
-    when: postgresql_data_dir.stat.isdir is not defined
-
-  - name: Create the postgresql data directory if it is not in the default place
-    file: dest={{ psql_data_dir }} owner=postgres group=postgres mode=700 recurse=yes state=directory
-
-  - name: Set the postgresql data dir if it is different from the default
-    become: True
-    become_user: postgres
-    action: configfile path={{ psql_conf_dir }}/postgresql.conf key=data_directory value="'{{ psql_data_dir }}'"
-
-  - name: Copy the postgresql data directory into the new place
-    shell: '[ "/var/lib/postgresql/{{ psql_version }}/main" != "{{ psql_data_dir }}" ] && cp -a /var/lib/postgresql/{{ psql_version }}/main/* {{ psql_data_dir }}'
-    args:
-      creates: '{{ psql_data_dir }}/main/base'
-    when: postgresql_data_dir.stat.isdir is not defined
-
-  - name: Start the postgresql service that will use the new data directory
-    service: name=postgresql state=started 
-    when: postgresql_data_dir.stat.isdir is not defined
-
   when:
     - psql_use_alternate_data_dir
     - ansible_distribution_file_variety == "Debian"
-  tags: [ 'postgresql', 'postgres', 'pg_conf' ]
+  tags: ['postgresql', 'postgres', 'pg_conf']
-
-- name: Configuration of Deb/Ubuntu systems
   block:
-  - name: Set some postgresql configuration parameters that require a db restart
+    - name: postgresql-config | Check if the new postgresql data directory exists
+      ansible.builtin.stat:
+        path: "{{ psql_data_dir }}"
+      register: postgresql_data_dir
+
+    - name: postgresql-config | Stop the postgresql service while reconfiguring the data directory
+      ansible.builtin.service:
+        name: postgresql
+        state: stopped
+      when: postgresql_data_dir.stat.isdir is not defined
+
+    - name: postgresql-config | Create the postgresql data directory if it is not in the default place
+      ansible.builtin.file:
+        dest: "{{ psql_data_dir }}"
+        owner: postgres
+        group: postgres
+        mode: '700'
+        state: directory
+        recurse: true
+
+    - name: postgresql-config | Set the postgresql data dir if it is different from the default
+      become: true
+      become_user: postgres
+      community.postgresql.postgresql_set:
+        name: data_directory
+        value: "'{{ psql_data_dir }}'"
+
+    - name: postgresql-config | Copy the postgresql data directory into the new place
+      ansible.builtin.shell:
+        cmd: |
+          if [ "/var/lib/postgresql/{{ psql_version | quote }}/main" != "{{ psql_data_dir | quote }}" ] ; then
+            cp -a /var/lib/postgresql/{{ psql_version | quote }}/main/* {{ psql_data_dir | quote }}
+          fi
+      args:
+        creates: '{{ psql_data_dir }}/main/base'
+      when: postgresql_data_dir.stat.isdir is not defined
+
+    - name: postgresql-config | Start the postgresql service that will use the new data directory
+      ansible.builtin.service:
+        name: postgresql
+        state: started
+      when: postgresql_data_dir.stat.isdir is not defined
+
+- name: postgresql-config | Configuration of Deb/Ubuntu systems
+  block:
+  - name: postgresql-config | Set some postgresql configuration parameters that require a db restart
     become: True
     become_user: postgres
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key={{ item.name }} value="{{ item.value }}"
@@ -43,7 +59,7 @@
     notify: Restart postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Set the postgresql logging configuration parameters
+  - name: postgresql-config | Set the postgresql logging configuration parameters
     become: True
     become_user: postgres
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key={{ item.name }} value="{{ item.value }}"
@@ -52,7 +68,7 @@
     notify: Reload postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_conf_log' ]
 
-  - name: Set the postgresql autovacuum configuration parameters
+  - name: postgresql-config | Set the postgresql autovacuum configuration parameters
     become: True
     become_user: postgres
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key={{ item.name }} value="{{ item.value }}"
@@ -61,52 +77,52 @@
     notify: Reload postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_conf_autovacuum' ]
 
-  - name: Set the postgresql listen port
+  - name: postgresql-config | Set the postgresql listen port
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key=port value="{{ psql_db_port }}"
     register: restart_postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: We want postgres listen on the public IP
+  - name: postgresql-config | We want postgres listen on the public IP
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key=listen_addresses value="'*'"
     register: restart_postgresql
     when:
       - psql_listen_on_ext_int
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: If postgresql is only accessed from localhost make it listen only on the localhost interface
+  - name: postgresql-config | If postgresql is only accessed from localhost make it listen only on the localhost interface
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key=listen_addresses value="'localhost'"
     register: restart_postgresql
     when:
       - not psql_listen_on_ext_int
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Log the connections
+  - name: postgresql-config | Log the connections
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key=log_connections value="on"
     register: restart_postgresql
     when: psql_db_data is defined
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Log the disconnections
+  - name: postgresql-config | Log the disconnections
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key=log_disconnections value="on"
     register: restart_postgresql
     when: psql_db_data is defined
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Log the hostnames
+  - name: postgresql-config | Log the hostnames
     action: configfile path={{ psql_conf_dir }}/postgresql.conf key=log_hostname value="on"
     register: restart_postgresql
     when:
       - psql_listen_on_ext_int
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Set the correct permissions to the postgresql files
+  - name: postgresql-config | Set the correct permissions to the postgresql files
     file: dest={{ psql_conf_dir }}/{{ item }} owner=root group=postgres mode=0640
     with_items:
       - pg_hba.conf
       - postgresql.conf
     tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_conf' ]
 
-  - name: Restart the postgresql server after changing parameters that need a restart
+  - name: postgresql-config | Restart the postgresql server after changing parameters that need a restart
     service: name=postgresql state=restarted
     when:
       - restart_postgresql is defined and restart_postgresql is changed
@@ -115,40 +131,40 @@
 
   when: ansible_distribution_file_variety == "Debian"
 
-- name: Data directory for EL
+- name: postgresql-config | Data directory for EL
   block: 
   - name: Check if the new postgresql data directory exists
     stat: path={{ psql_el_data_dir }}
     register: postgresql_data_dir
 
-  - name: Stop the postgresql service while reconfiguring the data directory
+  - name: postgresql-config | Stop the postgresql service while reconfiguring the data directory
     service: name='postgresql-{{ psql_version }}' state=stopped
     when: postgresql_data_dir.stat.isdir is not defined
 
-  - name: Create the postgresql data directory if it is not in the default place
+  - name: postgresql-config | Create the postgresql data directory if it is not in the default place
     file: dest={{ psql_el_data_dir }} owner=postgres group=postgres mode=700 recurse=yes state=directory
 
-  - name: Set the postgresql data dir if it is different from the default
+  - name: postgresql-config | Set the postgresql data dir if it is different from the default
-    become: True
+    become: true
     become_user: postgres
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key=data_directory value="'{{ psql_el_data_dir }}'"
 
-  - name: Copy the postgresql data directory into the new place
+  - name: postgresql-config | Copy the postgresql data directory into the new place
     shell: '[ "/var/lib/pgsql/{{ psql_version }}/data" != "{{ psql_el_data_dir }}" ] && cp -a /var/lib/pgsql/{{ psql_version }}/data/* {{ psql_el_data_dir }}'
     args:
       creates: '{{ psql_el_data_dir }}/base'
     when: postgresql_data_dir.stat.isdir is not defined
 
-  - name: Fix the SELinux context for the new data directory
+  - name: postgresql-config | Fix the SELinux context for the new data directory
     sefcontext:
       target: '{{ psql_el_base_dir }}(/.*)?'
       setype: postgresql_db_t
       state: present
 
-  - name: Restore the SELinux context
+  - name: postgresql-config | Restore the SELinux context
     command: restorecon -vR {{ psql_el_base_dir }}
 
-  - name: Start the postgresql service that will use the new data directory
+  - name: postgresql-config | Start the postgresql service that will use the new data directory
     service: name='postgresql-{{ psql_version }}' state=started 
     when: postgresql_data_dir.stat.isdir is not defined
 
@@ -157,21 +173,21 @@
     - ansible_distribution_file_variety == "RedHat"
   tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-- name: Configuration of EL systems
+- name: postgresql-config | Configuration of EL systems
   block:
-  - name: Create the postgresql log directory
+  - name: postgresql-config | Create the postgresql log directory
     file: dest={{ psql_log_dir }} state=directory owner=postgres group=postgres mode='0750'
 
-  - name: Fix the SELinux context for the postgresql log directory
+  - name: postgresql-config | Fix the SELinux context for the postgresql log directory
     sefcontext:
       target: '{{ psql_log_dir }}(/.*)?'
       setype: postgresql_db_t
       state: present
 
-  - name: Fix the SELinux context for the postgresql log directory
+  - name: postgresql-config | Fix the SELinux context for the postgresql log directory
     command: restorecon -vR {{ psql_log_dir }}
 
-  - name: Set some postgresql configuration parameters that require a db restart
+  - name: postgresql-config | Set some postgresql configuration parameters that require a db restart
     become: True
     become_user: postgres
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key={{ item.name }} value="{{ item.value }}"
@@ -180,7 +196,7 @@
     notify: Restart postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Set the postgresql logging configuration parameters
+  - name: postgresql-config | Set the postgresql logging configuration parameters
     become: True
     become_user: postgres
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key={{ item.name }} value="{{ item.value }}"
@@ -189,7 +205,7 @@
     notify: Reload postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_conf_log' ]
 
-  - name: Set the postgresql autovacuum configuration parameters
+  - name: postgresql-config | Set the postgresql autovacuum configuration parameters
     become: True
     become_user: postgres
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key={{ item.name }} value="{{ item.value }}"
@@ -198,52 +214,52 @@
     notify: Reload postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_conf_autovacuum' ]
 
-  - name: Set the postgresql listen port
+  - name: postgresql-config | Set the postgresql listen port
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key=port value="{{ psql_db_port }}"
     register: restart_postgresql
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: We want postgres listen on the public IP
+  - name: postgresql-config | We want postgres listen on the public IP
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key=listen_addresses value="'*'"
     register: restart_postgresql
     when:
       - psql_listen_on_ext_int
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: If postgresql is only accessed from localhost make it listen only on the localhost interface
+  - name: postgresql-config | If postgresql is only accessed from localhost make it listen only on the localhost interface
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key=listen_addresses value="'localhost'"
     register: restart_postgresql
     when:
       - not psql_listen_on_ext_int
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Log the connections
+  - name: postgresql-config | Log the connections
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key=log_connections value="on"
     register: restart_postgresql
     when: psql_db_data is defined
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Log the disconnections
+  - name: postgresql-config | Log the disconnections
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key=log_disconnections value="on"
     register: restart_postgresql
     when: psql_db_data is defined
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Log the hostnames
+  - name: postgresql-config | Log the hostnames
     action: configfile path={{ psql_el_conf_dir }}/postgresql.conf key=log_hostname value="on"
     register: restart_postgresql
     when:
       - psql_listen_on_ext_int
     tags: [ 'postgresql', 'postgres', 'pg_conf' ]
 
-  - name: Set the correct permissions to the postgresql files
+  - name: postgresql-config | Set the correct permissions to the postgresql files
     file: dest={{ psql_el_conf_dir }}/{{ item }} owner=root group=postgres mode=0640
     with_items:
       - pg_hba.conf
       - postgresql.conf
     tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_conf' ]
 
-  - name: Restart the postgresql server after changing parameters that need a restart
+  - name: postgresql-config | Restart the postgresql server after changing parameters that need a restart
     service: name='postgresql-{{ psql_version }}' state=restarted
     when:
       - restart_postgresql is defined and restart_postgresql is changed

tasks/postgresql-streaming-replication.yml

@@ -1,173 +1,178 @@
 ---
-- name: Configuration of the streaming replication
+- name: postgresql-streaming-replication | Configuration of the streaming replication
-  block:
+  become: true
-  - name: Create the replication user
-    postgresql_user:
-      name: '{{ psql_streaming_replication_user }}'
-      role_attr_flags: "REPLICATION"
-      password: '{{ psql_streaming_replication_pwd }}'
-      encrypted: yes
-      state: present
-
-  - name: Setup the streaming replication on the primary
-    postgresql_set:
-      name: '{{ item.name }}'
-      value: "{{ item.value }}"
-    loop: '{{ psql_streaming_replication_config }}'
-    when: postgresql_streaming_replication_primary_node == ansible_fqdn
-    notify: Restart postgresql
-
-  - meta: flush_handlers
-
-  become: True
   become_user: postgres
-  tags: [ 'postgresql', 'postgres', 'pg_conf', 'postgresql_replication' ]
+  tags: ['postgresql', 'postgres', 'pg_conf', 'postgresql_replication']
-
-- name: Configure the streaming replication user on deb systems
   block:
-  - name: Configure the replication user permissions on deb
+    - name: postgresql-streaming-replication | Create the replication user
-    postgresql_pg_hba:
+      community.postgresql.postgresql_user:
-      dest: '{{ psql_conf_dir }}/pg_hba.conf'
+        name: '{{ psql_streaming_replication_user }}'
-      contype: host
+        role_attr_flags: "REPLICATION"
-      users: '{{ psql_streaming_replication_user }}'
+        password: '{{ psql_streaming_replication_pwd }}'
-      address: '{{ item }}'
+        encrypted: true
-      databases: 'replication'
+        state: present
-      #method: 'scram-sha-256'
-      method: 'md5'
-      state: present
-    loop: '{{ psql_streaming_replication_hosts }}'
-    notify: Reload postgresql
-    when: not psql_enable_ssl
 
-  - name: Configure the replication user permissions on deb
+    - name: postgresql-streaming-replication | Setup the streaming replication on the primary
-    postgresql_pg_hba:
+      community.postgresql.postgresql_set:
-      dest: '{{ psql_conf_dir }}/pg_hba.conf'
+        name: '{{ item.name }}'
-      contype: hostssl
+        value: "{{ item.value }}"
-      users: '{{ psql_streaming_replication_user }}'
+      loop: '{{ psql_streaming_replication_config }}'
-      address: '{{ item }}'
+      when: postgresql_streaming_replication_primary_node == ansible_fqdn
-      databases: 'replication'
+      notify: Restart postgresql
-      #method: 'scram-sha-256'
-      method: 'md5'
-      state: present
-    loop: '{{ psql_streaming_replication_hosts }}'
-    notify: Reload postgresql
-    when: psql_enable_ssl
 
-  - meta: flush_handlers
+    - name: postgresql-streaming-replication | Flush flush_handlers restart PostgreSQL
+      ansible.builtin.meta: flush_handlers
 
+- name: postgresql-streaming-replication | Configure the streaming replication user on deb systems
   when: ansible_distribution_file_variety == "Debian"
-  tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_hba', 'postgresql_replication' ]
+  tags: ['postgresql', 'postgres', 'pg_conf', 'pg_hba', 'postgresql_replication']
-
-- name: Configure the streaming replication user on EL
   block:
-  - name: Configure the replication user permissions on EL
+    - name: postgresql-streaming-replication | Configure the replication user permissions on deb
-    postgresql_pg_hba:
+      community.postgresql.postgresql_pg_hba:
-      dest: '{{ psql_el_conf_dir }}/pg_hba.conf'
+        dest: '{{ psql_conf_dir }}/pg_hba.conf'
-      contype: host
+        contype: host
-      users: '{{ psql_streaming_replication_user }}'
+        users: '{{ psql_streaming_replication_user }}'
-      address: '{{ item }}'
+        address: '{{ item }}'
-      databases: 'replication'
+        databases: 'replication'
-      #method: 'scram-sha-256'
+        # method: 'scram-sha-256'
-      method: 'md5'
+        method: 'md5'
-      state: present
+        state: present
-    loop: '{{ psql_streaming_replication_hosts }}'
+      loop: '{{ psql_streaming_replication_hosts }}'
-    notify: Reload postgresql
+      notify: Reload postgresql
-    when: not psql_enable_ssl
+      when: not psql_enable_ssl
 
-  - name: Configure the replication user permissions on EL
+    - name: postgresql-streaming-replication | Configure the replication user permissions on deb
-    postgresql_pg_hba:
+      community.postgresql.postgresql_pg_hba:
-      dest: '{{ psql_el_conf_dir }}/pg_hba.conf'
+        dest: '{{ psql_conf_dir }}/pg_hba.conf'
-      contype: hostssl
+        contype: hostssl
-      users: '{{ psql_streaming_replication_user }}'
+        users: '{{ psql_streaming_replication_user }}'
-      address: '{{ item }}'
+        address: '{{ item }}'
-      databases: 'replication'
+        databases: 'replication'
-      #method: 'scram-sha-256'
+        # method: 'scram-sha-256'
-      method: 'md5'
+        method: 'md5'
-      state: present
+        state: present
-    loop: '{{ psql_streaming_replication_hosts }}'
+      loop: '{{ psql_streaming_replication_hosts }}'
-    notify: Reload postgresql
+      notify: Reload postgresql
-    when: psql_enable_ssl
+      when: psql_enable_ssl
 
-  - meta: flush_handlers
+    - name: postgresql-streaming-replication | Flush flush_handlers reload PostgreSQL
+      ansible.builtin.meta: flush_handlers
 
+- name: postgresql-streaming-replication | Configure the streaming replication user on EL
   when: ansible_distribution_file_variety == "RedHat"
-  tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_hba', 'postgresql_replication' ]
+  tags: ['postgresql', 'postgres', 'pg_conf', 'pg_hba', 'postgresql_replication']
-
-- name: Manage the replica initialization
   block:
-  - name: Set some paths when it is a deb based system
+    - name: postgresql-streaming-replication | Configure the replication user permissions on EL
-    set_fact:
+      community.postgresql.postgresql_pg_hba:
-      postgresql_user_home: '/var/lib/postgresql'
+        dest: '{{ psql_el_conf_dir }}/pg_hba.conf'
-      postgresql_active_data_dir: '{{ psql_data_dir }}'
+        contype: host
-    when: ansible_distribution_file_variety == "Debian"
+        users: '{{ psql_streaming_replication_user }}'
+        address: '{{ item }}'
+        databases: 'replication'
+        # method: 'scram-sha-256'
+        method: 'md5'
+        state: present
+      loop: '{{ psql_streaming_replication_hosts }}'
+      notify: Reload postgresql
+      when: not psql_enable_ssl
 
-  - name: Set some paths it is a EL based system
+    - name: postgresql-streaming-replication | Configure the replication user permissions on EL
-    set_fact:
+      community.postgresql.postgresql_pg_hba:
-      postgresql_user_home: '/var/lib/pgsql'
+        dest: '{{ psql_el_conf_dir }}/pg_hba.conf'
-      postgresql_active_data_dir: '{{ psql_el_data_dir }}'
+        contype: hostssl
-    when: ansible_distribution_file_variety == "RedHat"
+        users: '{{ psql_streaming_replication_user }}'
+        address: '{{ item }}'
+        databases: 'replication'
+        # method: 'scram-sha-256'
+        method: 'md5'
+        state: present
+      loop: '{{ psql_streaming_replication_hosts }}'
+      notify: Reload postgresql
+      when: psql_enable_ssl
 
-  - name: Create the .pgpass file inside the postgresql home {{ postgresql_user_home }}
+    - name: postgresql-streaming-replication | Flush flush_handlers reload PostgreSQL
-    become: True
+      ansible.builtin.meta: flush_handlers
-    become_user: postgres
-    copy:
-      content: "{{ postgresql_streaming_replication_primary_node }}:{{ psql_db_port }}:replication:{{ psql_streaming_replication_user }}:{{ psql_streaming_replication_pwd }}"
-      dest: '{{ postgresql_user_home }}/.pgpass'
-      mode: '0400'
-
-  - name: Check if a replica is already enabled
-    stat:
-      path: '{{ postgresql_active_data_dir }}/standby.signal'
-    register: standby_signal_file
-
-  - debug:
-      msg: 'Replica file: {{ postgresql_active_data_dir }}/standby.signal'
-
-  - name: Stop the postgresql service on deb systems
-    service:
-      name: postgresql
-      state: stopped
-    when:
-      - ansible_distribution_file_variety == "Debian"
-      - not standby_signal_file.stat.exists
-
-  - name: Stop the postgresql service on EL systems
-    service:
-      name: 'postgresql-{{ psql_version }}'
-      state: stopped
-    when:
-      - ansible_distribution_file_variety == "RedHat"
-      - not standby_signal_file.stat.exists
-
-  - name: Remove the data directory contents {{ postgresql_active_data_dir }}
-    become: True
-    become_user: postgres
-    file:
-      dest: '{{ postgresql_active_data_dir }}'
-      state: absent
-    when: not standby_signal_file.stat.exists
-
-  - name: Run the pg_basebackup command that starts the replica
-    become: True
-    become_user: postgres
-    shell:  /usr/bin/pg_basebackup -h {{ postgresql_streaming_replication_primary_node }} -p {{ psql_db_port }} -U {{ psql_streaming_replication_user }} -D {{ postgresql_active_data_dir }} -Fp -R -Xs -P -w
-    when: not standby_signal_file.stat.exists
-
-  - name: Start the postgresql service
-    service:
-      name: postgresql
-      state: started
-    when:
-      - ansible_distribution_file_variety == "Debian"
-      - not standby_signal_file.stat.exists
-
-  - name: Start the postgresql service on EL systems
-    service:
-      name: 'postgresql-{{ psql_version }}'
-      state: started
-    when:
-      - ansible_distribution_file_variety == "RedHat"
-      - not standby_signal_file.stat.exists
 
+- name: postgresql-streaming-replication | Manage the replica initialization
   when: postgresql_streaming_replication_primary_node != ansible_fqdn
-  tags: [ 'postgresql', 'postgres', 'pg_conf', 'postgresql_replication' ]
+  tags: ['postgresql', 'postgres', 'pg_conf', 'postgresql_replication']
+  block:
+    - name: postgresql-streaming-replication | Set some paths when it is a deb based system
+      ansible.builtin.set_fact:
+        postgresql_user_home: '/var/lib/postgresql'
+        postgresql_active_data_dir: '{{ psql_data_dir }}'
+      when: ansible_distribution_file_variety == "Debian"
+
+    - name: postgresql-streaming-replication | Set some paths it is a EL based system
+      ansible.builtin.set_fact:
+        postgresql_user_home: '/var/lib/pgsql'
+        postgresql_active_data_dir: '{{ psql_el_data_dir }}'
+      when: ansible_distribution_file_variety == "RedHat"
+
+    - name: postgresql-streaming-replication | Create the .pgpass file inside the postgresql home {{ postgresql_user_home }}
+      become: true
+      become_user: postgres
+      ansible.builtin.template:
+        src: replica_pgpass.j2
+        dest: '{{ postgresql_user_home }}/.pgpass'
+        mode: '0400'
+
+    - name: postgresql-streaming-replication | Check if a replica is already enabled
+      ansible.builtin.stat:
+        path: '{{ postgresql_active_data_dir }}/standby.signal'
+      register: standby_signal_file
+
+    - name: postgresql-streaming-replication | Prnt the replica file
+      ansible.builtin.debug:
+        msg: 'Replica file: {{ postgresql_active_data_dir }}/standby.signal'
+
+    - name: postgresql-streaming-replication | Stop the postgresql service on deb systems
+      ansible.builtin.service:
+        name: postgresql
+        state: stopped
+      when:
+        - ansible_distribution_file_variety == "Debian"
+        - not standby_signal_file.stat.exists
+
+    - name: postgresql-streaming-replication | Stop the postgresql service on EL systems
+      ansible.builtin.service:
+        name: 'postgresql-{{ psql_version }}'
+        state: stopped
+      when:
+        - ansible_distribution_file_variety == "RedHat"
+        - not standby_signal_file.stat.exists
+
+    - name: postgresql-streaming-replication | Remove the data directory contents {{ postgresql_active_data_dir }}
+      become: true
+      become_user: postgres
+      ansible.builtin.file:
+        dest: '{{ postgresql_active_data_dir }}'
+        state: absent
+      when: not standby_signal_file.stat.exists
+
+    - name: postgresql-streaming-replication | Run the pg_basebackup command that starts the replica
+      become: true
+      become_user: postgres
+      ansible.builtin.shell: >
+        /usr/bin/pg_basebackup -h {{ postgresql_streaming_replication_primary_node }}
+        -p {{ psql_db_port }} -U {{ psql_streaming_replication_user }}
+        -D {{ postgresql_active_data_dir }} -Fp -R -Xs -P -w
+      args:
+        creates: '{{ postgresql_active_data_dir }}'
+      when: not standby_signal_file.stat.exists
+
+    - name: postgresql-streaming-replication | Start the postgresql service
+      ansible.builtin.service:
+        name: postgresql
+        state: started
+      when:
+        - ansible_distribution_file_variety == "Debian"
+        - not standby_signal_file.stat.exists
+
+    - name: postgresql-streaming-replication | Start the postgresql service on EL systems
+      ansible.builtin.service:
+        name: 'postgresql-{{ psql_version }}'
+        state: started
+      when:
+        - ansible_distribution_file_variety == "RedHat"
+        - not standby_signal_file.stat.exists

templates/replica_pgpass.j2

@@ -0,0 +1 @@
+{{ postgresql_streaming_replication_primary_node }}:{{ psql_db_port }}:replication:{{ psql_streaming_replication_user }}:{{ psql_streaming_replication_pwd }}