How to alter postgres database user with superuser using Ansible
In this article, we will guide you through the process of altering a PostgreSQL database user to grant them superuser privileges using Ansible. Ansible is a powerful automation tool that allows you to automate various tasks, including managing database users and permissions. By following the steps outlined in this article, you will be able to efficiently manage your PostgreSQL database users and their permissions.
Firstly, ensure that you have Ansible installed on your system. You can install Ansible by following the instructions provided on the official Ansible website (https://docs.ansible.com/ansible/latest/user_guide/getting_started.html).
Once Ansible is installed, you need to create an inventory file that contains the details of the PostgreSQL server you want to manage. The inventory file should have the following format:
“`
[postgresql]
pgserver1 ansible_host=192.168.1.1 ansible_user=root
pgserver2 ansible_host=192.168.1.2 ansible_user=root
“`
In this example, we have two PostgreSQL servers with IP addresses 192.168.1.1 and 192.168.1.2, and we are using the root user to connect to the servers.
Next, create a playbook that will alter the PostgreSQL database user to grant them superuser privileges. The playbook should have the following structure:
“`
– name: Alter PostgreSQL user to superuser
hosts: postgresql
become: yes
tasks:
– name: Connect to PostgreSQL server
postgresql_user:
host: “{{ inventory_hostname }}”
port: 5432
username: root
password: root_password
database: postgres
state: present
– name: Grant superuser privileges to the user
postgresql_user:
host: “{{ inventory_hostname }}”
port: 5432
username: root
password: root_password
database: postgres
name: your_username
superuser: yes
state: present
“`
In this playbook, we first connect to the PostgreSQL server using the `postgresql_user` module. Then, we grant superuser privileges to the specified user by setting the `superuser` parameter to `yes`.
To execute the playbook, run the following command:
“`
ansible-playbook -i inventory file_name.yml
“`
Replace `inventory` with the path to your inventory file, and `file_name.yml` with the name of your playbook file.
After executing the playbook, the specified PostgreSQL user will be granted superuser privileges. You can verify this by checking the user’s privileges in the PostgreSQL server using the following SQL command:
“`
SELECT rolname FROM pg_roles WHERE rolsuper;
“`
This article has provided a step-by-step guide on how to alter a PostgreSQL database user to grant them superuser privileges using Ansible. By following these instructions, you can efficiently manage your database users and their permissions, ensuring the security and stability of your PostgreSQL environment.
