Introduction
PostgreSQL is one of the most advanced and popular relational database management systems in the free software world. Its combination of robustness, extensibility, and standards compliance makes it an ideal choice for Linux environments, where it benefits from the stability and security of the kernel and the available administration tools. In this article you will learn how to install, configure, and optimize PostgreSQL on the most used distributions, as well as apply security and monitoring best practices.
Prerequisites
Before you begin, make sure you have root or sudo access on your Linux server. It is recommended to have at least 2 GB of RAM and 20 GB of disk space for a test environment, although in production more resources are required according to the expected load. Verify that your system is up to date by running the update commands corresponding to your distribution. Also, keep a text editor such as nano or vim handy to modify configuration files.
Installation on Ubuntu/Debian
On Debian-based distributions, the process is simple thanks to the official repositories. First update the package index:
sudo apt updatesudo apt upgrade -y
Then install PostgreSQL and the useful contrib package:
sudo apt install postgresql postgresql-contrib -y
The service starts automatically. You can check its status with:
sudo systemctl status postgresql
To access the PostgreSQL command-line interface, switch to the