Installing PostgreSQL on CentOS: A Step-by-Step Guide

Learn how to install PostgreSQL on CentOS with a step-by-step guide. Improve your server's capabilities with this easy-to-follow tutorial.

Updated: 22 Mar, 23 by Susith Nonis 4 Min

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PostgreSQL is a powerful open-source relational database management system that is used in a wide range of applications. It provides advanced features such as transaction handling, concurrency, and data integrity, making it a popular choice for developers and businesses. If you're running CentOS and want to use PostgreSQL, you'll need to install it on your server. This step-by-step guide will walk you through installing PostgreSQL on CentOS so that you can take advantage of its many benefits.

PostgreSQL is a popular open-source relational database management system widely used in the industry. It is known for its ability to handle complex data and its support for advanced features such as transaction handling, data integrity, and concurrency. PostgreSQL is also highly extensible and customizable, making it a flexible tool for businesses and developers. It is distributed under the PostgreSQL License, which allows for free use and modification of the software.

To use PostgreSQL on CentOS, you'll need to install it on your server. Once installed, you can use the psql command-line interface or a GUI tool like pgAdmin to manage your PostgreSQL databases. CentOS provides a robust and secure platform for running PostgreSQL, allowing you to take advantage of its many features and benefits. By following the step-by-step guide for installing PostgreSQL on CentOS, you can improve the capabilities of your server and streamline your data management processes.

  • Connect to your CentOS server using SSH.
  • Update the system by running the command: 

sudo yum update

  • Install the PostgreSQL server by running the command:

sudo yum install postgresql-server postgresql-contrib

  • Initialize the PostgreSQL database by running the command:

sudo postgresql-setup initdb

  • Start the PostgreSQL service by running the command:

sudo systemctl start postgresql

  • Configure PostgreSQL to start automatically at boot time by running the command:

sudo systemctl enable postgresql

  • Set the password for the default PostgreSQL user (postgres) by running the command:

sudo passwd postgres

  • Enter and confirm the password when prompted.
  • Switch to the postgres user by running the command:

sudo su – postgres

  • Access the PostgreSQL prompt by running the command:

psql

  • Create a new PostgreSQL user by running the command:

CREATE USER [username] WITH PASSWORD '[password]';

  • Replace [username] and [password] with your preferred values.
  • Create a new PostgreSQL database by running the command:

CREATE DATABASE [database name];

  • Replace [database name] with your preferred database name.
  • Grant the new user access to the new database by running the command:

GRANT ALL PRIVILEGES ON DATABASE [database name] TO [username];

  • Exit the PostgreSQL prompt by running the command:

\q

  • Exit the postgres user by running the command:

exit

Congratulations! You have successfully installed PostgreSQL on CentOS and created a new user and database.

Installing PostgreSQL on CentOS is a simple process that can be done by following the steps above. PostgreSQL is an open-source and powerful relational database management system widely used by developers and organizations. By installing PostgreSQL on CentOS, you can leverage its numerous features, high performance, and scalability to develop and deploy robust applications. With the right installation and configuration, you can use PostgreSQL to power your database-driven applications, store and retrieve data efficiently, and take advantage of its incredible flexibility and extensibility.

  • PostgreSQL is a powerful open-source database management system that supports advanced features such as triggers, views, and transactions.
  • CentOS is a popular Linux distribution known for its stability, security, and compatibility with various software packages.
  • Installing PostgreSQL on CentOS is a straightforward process that involves downloading the necessary packages and configuring the database settings.
  • The benefits of using PostgreSQL on CentOS include improved application performance, scalability, and reliability.

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PostgreSQL is lightweight and can run on a system with minimal resources. However, it is recommended to have at least 1GB of RAM and 10GB of disk space available for optimal performance.

After installation, you can access the PostgreSQL database by logging in to the server and using the command-line interface or connecting to the server using a graphical user interface tool.

Yes, multiple versions of PostgreSQL can be installed on a CentOS server by carefully managing the installation, configuration, and port numbers to prevent conflicts between the different PostgreSQL instances.

To secure your PostgreSQL installation, you should use strong passwords, limit access to the server, configure the firewall to allow only necessary traffic, enable SSL encryption, and regularly patch and update the server.

Yes, PostgreSQL has drivers and connectors for the most popular programming languages and web frameworks, including Java, Python, Ruby, Node.js, and PHP. People also read: 

Susith Nonis

Susith Nonis

I'm fascinated by the IT world and how the 1's and 0's work. While I venture into the world of Technology, I try to share what I know in the simplest way with you. Not a fan of coffee, a travel addict, and a self-accredited 'master chef'.