Installing PostgreSQL on CentOS 7 using Yum

   

PostgreSQL is a powerful open-source relational database management system known for its robustness and extensibility. It is widely used by developers and organizations for managing structured data efficiently. In this guide, we will walk you through the steps to install PostgreSQL on a CentOS 7 server using the yum package manager.

Step 1: Update Package Repositories:

Before installing any new software, it's essential to update the package repositories to ensure that you have the latest information about available packages. You can do this by running the following command in your terminal:

sudo yum update

Step 2: Install PostgreSQL Server:

To install PostgreSQL on CentOS 7, you can use the yum package manager. PostgreSQL packages are available in the default CentOS repositories, so you can install them with a single command :

sudo yum install postgresql-server postgresql-contrib

This command will install both the PostgreSQL server and additional contributed modules that enhance PostgreSQL's functionality.

Step 3: Initialize the Database:

After installing the PostgreSQL server, you need to initialize the database cluster. You can do this by running the following command :

sudo postgresql-setup initdb

This command will create the necessary directory structure and initialize the PostgreSQL database cluster.

Step 4: Start PostgreSQL Service:

Once the database cluster is initialized, you can start the PostgreSQL service using the following command :

sudo systemctl start postgresql

This command will start the PostgreSQL service, allowing you to interact with the database server.

Step 5: Enable PostgreSQL Service (Optional):

If you want PostgreSQL to start automatically whenever the system boots, you can enable the PostgreSQL service using the following command :

sudo systemctl enable postgresql

Enabling the PostgreSQL service ensures that it starts automatically on system startup.

Conclusion:

In this guide, we have demonstrated how to install PostgreSQL on CentOS 7 using the yum package manager. By following these steps, you can set up a PostgreSQL database server on your CentOS 7 system and start working with PostgreSQL databases.