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. The installation is quite simple. I will show you through the step by step installation PostgreSQL on CentOS 6.
Install PostgreSQL on CentOS 6
Step 1. First, add the PostgreSQL Yum repository to your system.
## CentOS/RHEL 6, 32-Bit ## rpm -Uvh http://yum.postgresql.org/9.4/redhat/rhel-6-i386/pgdg-centos94-9.4-1.noarch.rpm ## CentOS/RHEL 6, 64-Bit ## rpm -Uvh http://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/pgdg-centos94-9.4-1.noarch.rpm
Step 2. Install the PostgreSQL server.
To install a basic PostgreSQL 9.4 server use the following command:
yum install postgresql94-server postgresql94-contrib
Once the postgresql94-server package is installed, you need to initialize a database:
service postgresql-9.4 initdb
Step 3. Start PostgreSQL.
chkconfig postgresql-9.4 on service postgresql-9.4 start
Step 4. Create a test database and Create new user PostgreSQL.
Once the installation is completed, you can start using the PostgreSQL 9.4 on your CentOS 6 by typing the commands:
su - postgres psql
Create a test database (as postgres user).
createdb idroot
Login test database (as postgres user).
psql idroot
Congratulations! You have successfully installed PostgreSQL. Thanks for using this tutorial for installing PostgreSQL on the CentOS 8 system. For additional help or useful information, we recommend you to check the official PostgreSQL website.