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. I will show you through the step by step installation PostgreSQL on CentOS 6.
Step 1. First, add 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 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 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
Create test database (as postgres user).
Login test database (as postgres user).
Congratulation’s! You have successfully installed PostgreSQL Server. Thanks for using this tutorial for installing PostgreSQL on CentOS 6 systems.