How to Allow md5 Connection for a PostgreSQL User / Role with Ansible?
I'm going to show you a live Playbook with some simple Ansible code.
I'm Luca Berton and welcome to today's episode of Ansible Pilot
Ansible Allow md5 Connection for a PostgreSQL User / Role
community.postgresql.postgresql_pg_hba
- Add, remove or modify a rule in a pg_hba file
Let's talk about the Ansible module postgresql_pg_hba.
The full name is community.postgresql.postgresql_pg_hba, which means that is part of the collection of modules "community.postgresql" maintained by the Ansible Community to interact with PostgreSQL.
The collection is tested with ansible-core version 2.11+, prior versions such as 2.9 or 2.10 are not supported.
The purpose of the module is to Add, remove or modify a rule in a pg_hba file.
This module uses psycopg2, a Python PostgreSQL User library. You must ensure that python3-psycopg2 is installed on the host before using this module.
Links
- [
community.postgresql.postgresql_pg_hba](https://docs.ansible.com/ansible/latest/collections/community/postgresql/postgresql_pg_hba_module.html)
Playbook
Let's jump into a real-life Ansible Playbook to Allow md5 Connection for a PostgreSQL User / Role now called Role.
I'm going to show you how to create a pg_hba.conffile to allow themyuser user/role to connect to the current PostgreSQL server using md5 authentication.
code
``yaml
---
- name: postgresql Playbook
hosts: all
become: true
vars:
db_user: myuser
tasks:
- name: Utility present
ansible.builtin.package:
name: python3-psycopg2
state: present
- name: Allow md5 connection for the db user
community.postgresql.postgresql_pg_hba:
dest: "~/data/pg_hba.conf"
contype: host
databases: all
method: md5
users: "{{ db_user }}"
create: true
become: true
become_user: postgres
notify: Restart service
handlers:
- name: Restart service
ansible.builtin.service:
name: postgresql
state: restarted
`
execution
``bash
$ ansible-playbook -i virtualmachines/demo/inventory postgresql/user_md5.yml
PLAY [postgresql Playbook] **
TASK [Gathering Facts] **
ok: [demo.example.com]
TASK [Utility present]