ansible-role-postgresql/tasks/configure-access.yml

---
- name: Configure accesses on Deb/Ubuntu
  block:
  - name: Give access to the remote postgresql client
    lineinfile: name={{ psql_conf_dir }}/pg_hba.conf regexp="^host.* {{ item.0.name }} {{ item.0.user }} {{ item.1 }}.*$" line="host {{ item.0.name }} {{ item.0.user }} {{ item.1 }} md5" owner=root group=postgres mode='0440'
    with_subelements: 
      - '{{ psql_db_data | default([]) }}'
      - allowed_hosts
    when:
      - psql_listen_on_ext_int
      - psql_db_data is defined
      - item.1 is defined
      - not psql_force_ssl_client_connection
    notify: Reload postgresql
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db' ]

  - name: Give access to the remote postgresql client, force ssl
    lineinfile: name={{ psql_conf_dir }}/pg_hba.conf regexp="^host.* {{ item.0.name }} {{ item.0.user }} {{ item.1 }}.*$" line="hostssl {{ item.0.name }} {{ item.0.user }} {{ item.1 }} md5" owner=root group=postgres mode='0440'
    with_subelements: 
      - '{{ psql_db_data | default([]) }}'
      - allowed_hosts
    when:
      - psql_listen_on_ext_int
      - psql_db_data is defined
      - item.1 is defined
      - psql_force_ssl_client_connection
    notify: Reload postgresql
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db' ]

  # No conditionals, it is needed to perform base backups when the WAL archive is active
  - name: Give local access with replication privileges to the postgres user
    lineinfile: name={{ psql_conf_dir }}/pg_hba.conf regexp="^local replication postgres peer" line="local replication postgres peer"  owner=root group=postgres mode='0440'
    notify: Reload postgresql
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db' ]

  when: ansible_distribution_file_variety == "Debian"

- name: Configure accesses on EL
  block:
  - name: Open the postgresql service to a specific zone.
    firewalld: service=postgresql zone={{ postgresql_firewalld_zone }} permanent=True state=enabled immediate=True
    when:
      - psql_listen_on_ext_int
      - firewalld_enabled
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db', 'firewall', 'iptables_rules' ]

  - name: Give access to the remote postgresql client
    lineinfile: name={{ psql_el_conf_dir }}/pg_hba.conf regexp="^host.* {{ item.0.name }} {{ item.0.user }} {{ item.1 }}.*$" line="host {{ item.0.name }} {{ item.0.user }} {{ item.1 }} md5" owner=root group=postgres mode='0440'
    with_subelements: 
      - '{{ psql_db_data | default([]) }}'
      - allowed_hosts
    when:
      - psql_listen_on_ext_int
      - psql_db_data is defined
      - item.1 is defined
      - not psql_force_ssl_client_connection
    notify: Reload postgresql
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db' ]

  - name: Give access to the remote postgresql client, force ssl
    lineinfile: name={{ psql_el_conf_dir }}/pg_hba.conf regexp="^host.* {{ item.0.name }} {{ item.0.user }} {{ item.1 }}.*$" line="hostssl {{ item.0.name }} {{ item.0.user }} {{ item.1 }} md5" owner=root group=postgres mode='0440'
    with_subelements: 
      - '{{ psql_db_data | default([]) }}'
      - allowed_hosts
    when:
      - psql_listen_on_ext_int
      - psql_db_data is defined
      - item.1 is defined
      - psql_force_ssl_client_connection
    notify: Reload postgresql
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db' ]

  # No conditionals, it is needed to perform base backups when the WAL archive is active
  - name: Remove the ident authentication for the local connections
    lineinfile: name={{ psql_el_conf_dir }}/pg_hba.conf regexp="^local.*?all.*?ident$" state=absent  owner=root group=postgres mode='0440'
    notify: Reload postgresql
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db' ]

  - name: Give local access with replication privileges to the postgres user
    lineinfile: name={{ psql_el_conf_dir }}/pg_hba.conf regexp="^local replication postgres peer" line="local replication postgres peer"  owner=root group=postgres mode='0440'
    notify: Reload postgresql
    tags: [ 'postgresql', 'postgres', 'pg_hba', 'pg_db' ]

  when: ansible_distribution_file_variety == "RedHat"