community.general/examples/playbooks/postgresql.yml

##
# Example Ansible playbook that uses the PostgreSQL module.
#
# This installs PostgreSQL on an Ubuntu system, creates a database called
# "myapp" and a user called "django" with password "mysupersecretpassword"
# with access to the "myapp" database.
#
---
- hosts: webservers
  sudo: yes
  gather_facts: no

  tasks:
  - name: ensure apt cache is up to date
    action: apt update_cache=yes
  - name: ensure packages are installed
    action: apt pkg=$item
    with_items:
        - postgresql
        - libpq-dev
        - python-psycopg2

- hosts: webservers
  sudo: yes
  sudo_user: postgres
  gather_facts: no

  vars:
    dbname: myapp
    dbuser: django
    dbpassword: mysupersecreetpassword

  tasks:
  - name: ensure database is created
    action: postgresql_db db=$dbname

  - name: ensure user has access to database
    action: postgresql_user db=$dbname user=$dbuser password=$dbpassword priv=ALL

  - name: ensure user does not have unnecessary privilege
    action: postgresql_user user=$dbuser role_attr_flags=NOSUPERUSER,NOCREATEDB