How to Install PostgreSQL on CentOS 7

If you're looking for a reliable and robust database management system, PostgreSQL is an excellent choice. In this article, we'll walk you through the process of installing PostgreSQL on CentOS 7.

There are two methods to install PostgreSQL on CentOS 7: using the official Postgres download page or via the PostgreSQL repository. We'll cover both methods in detail below.

Method 1: Install PostgreSQL from the Official Postgres Download Page

This method gives you more control over which exact Postgres version you want to install on your system and allows you to get the latest version of Postgres if needed. Here's how:

1. Open the official PostgresSQL download page.

2. Select your desired Postgres version and Linux distribution (CentOS 7).

3. Download the installation script provided by Postgres.

4. Run the script on your machine.

Alternatively, you can run individual commands from the script to install Postgres.

Method 2: Install PostgreSQL using the PostgreSQL Repository

This method is a more straightforward way to install Postgres on CentOS 7.

1. Configure PostgreSQL to start automatically on system reboot by running `sudo systemctl enable postgresql` command.

2. Initialize the database using the following command:

```

postgresql-setup --initdb

```

3. Start the database using:

```

systemctl start postgresql

```

Verifying Postgres Installation

After completing the installation, you can check the version of PostgreSQL installed on your system by running:

```

postgres -V

```

At the time of writing, the repository hosts PostgreSQL version 9.2.15. Note that this may not be the latest version available.

In this article, we've covered the steps to install PostgreSQL on CentOS 7 using both methods: from the official Postgres download page and via the PostgreSQL repository. Whether you choose one or both methods, you'll have a reliable and robust database management system up and running in no time.

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