How to Install PostgreSQL on CentOS/RHEL 7

    RahulBy 2 Mins ReadUpdated:

    PostgreSQL 10 Released. PostgreSQL is an open-source object-relational, highly scalable, SQL-compliant database management system. PostgreSQL is developed at the University of California at Berkeley Computer Science Department. This article will help you to install PostgreSQL 10 on CentOS, RHEL and Fedora Systems.

    Step 1 – Add Postgres Yum Repository

    The first step is to install PostgreSQL repository in your system, Use one of below commands as per your system architecture and operating system.

    ## CentOS/RHEL - 7
rpm -Uvh https://yum.postgresql.org/10/redhat/rhel-7-x86_64/pgdg-centos10-10-2.noarch.rpm

## CentOS/RHEL - 6
rpm -Uvh https://yum.postgresql.org/10/redhat/rhel-6-x86_64/pgdg-redhat10-10-2.noarch.rpm

    For more details visit PostgreSQL repositories link page where you can get repository package rpm for various operating systems.

    Step 2 – Install PostgreSQL 10 Server

    After enabling PostgreSQL yum repository in your system use following command to install PostgreSQL 10 on your system with yum package manager.

    yum install postgresql10-server postgresql10

    Step 3 – Initialize PGDATA

    After installing PostgreSQL server, It’s required to initialize it before using the first time. To initialize database use below command.

    /usr/pgsql-10/bin/postgresql-10-setup initdb

    Above command will take some time to initialize PostgreSQL first time. PGDATA environment variable contains the path of data directory.

    PostgreSQL data directory Path: /var/lib/pgsql/10/data/

    Setp 4 – Start PostgreSQL Server

    To start PostgreSQL service using the following command as per your operating systems. Also, enable PostgreSQL service to autostart on system boot.

    For CentOS/RHEL 7 and Fedora

    systemctl start postgresql-10.service
systemctl enable postgresql-10.service

    For CentOS/RHEL 6 

    service postgresql-10 start
chkconfig postgresql-10 on
    Step 5 – Verify PostgreSQL Installation

    After completing above steps, you have installed PostgreSQL 10 on your server, Let’s log in to postfix to verify that installation completed successfully.

    su - postgres -c "psql"

psql (10.0)
Type "help" for help.
postgres=#

    You may create a password for user postgres for security purpose.

    postgres=# \password postgres

    Congratulation’s! You have successfully installed PostgreSQL Server. Read below article to install phpPgAdmin.

    How to Install phpPgAdmin on CentOS using Yum

    Thanks for using this tutorial for installing PostgreSQL 10 on CentOS/RHEL 7/6 and Fedora 28/27/26 systems.

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    15 Comments

    2. George on

      Hi Rahul,

      Great!
      I can install postgresql in RHEL 7.5!!

      A hard Question: I want to restart my postgresql with “service postgresql restart” command, Should I have root profile? Or with my postgres account?

      Greetings!

      Reply
      • Rahul K. on

        Hi Nikhil, Please use below command ti initialize PostgreSQL database.

        For PostgreSQL 9.6:
        # /usr/pgsql-9.6/bin/postgresql96-setup initdb

        For PostgreSQL 10:
        # /usr/pgsql-10/bin/postgresql-10-setup initdb

        Reply
    5. Dave on

      Nice site. Laid out very well.

      This worked for me in Fedora 25 for PostgreSQL 9.6:

      Initializing PGDATA

      # /usr/pgsql-9.6/bin/postgresql96-setup initdb

      Reply
    8. Ajayakumar BS on

      initdb should be executed as postgres user.
      # su – postgres
      $/usr/pgsql-9.5/bin/initdb -D /var/lib/pgsql/9.5/data

      or

      # service postgresql-9.5 initdb

      Reply
    9. ALZ on

      I was not able to initdb on my CentOS 6.7 with next command:
      > Initializing PGDATA
      # /usr/pgsql-9.5/bin/postgresql95-setup initdb

      instead for me worked following:
      # service postgresql-9.5 initdb

      Reply

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