How To Install PostgreSQL on Debian 9

r00t July 28, 2017

Install PostgreSQL on Debian 9

In this tutorial we will show you how to install PostgreSQL on your Debian 9 server. For those of you who didn’t know, PostgreSQL is a free, open-source object-relational database management system (object-RDBMS), similar to MySQL, and is standards-compliant and extensible. It is commonly used as a back-end for web and mobile applications. PostgreSQL, or ‘Postgres’ as it is nicknamed, adopts the ANSI/ISO SQL standards together, with the revisions.

This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation PostgreSQL on a Debian 9 (Stretch) server.

Install PostgreSQL on Debian 9 Stretch

Step 1. Before we install any software, it’s important to make sure your system is up to date by running these following apt-get commands in the terminal:

Step 2. Installing PostgreSQL server.

PostgreSQL is available in the default repositories. Now, Install PostgreSQL packages using apt-get:

Start the PostgreSQL service also needs to be enabled to start on reboot using the following command:

Now we can confirm the installation using some commands. They are given below:

You should see something like this on the terminal:

Step 3. Access PostgreSQL command prompt.

After installing PostgreSQL database server, by default it creates a user ‘postgres’ with role ‘postgres’. It also creates a system account with same name ‘postgres’. So to connect to postgres server, login to your system as user postgres and connect database:

Now you are logged in to PostgreSQL database server. To check login info use following command from database command prompt:

To disconnect from PostgreSQL database command prompt just type below command and press enter. It will return you back to Ubuntu command prompt:

Create new user and database:

Congratulation’s! You have successfully installed PostgreSQL Server. Thanks for using this tutorial for installing PostgreSQL in Debian 9 Stretch systems. For additional help or useful information, we recommend you to check the official PostgreSQL web site.

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