PostgreSQL 9.5 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 for installing PostgreSQL on CentOS, RHEL and Fedora Systems.
Adding PostgreSQL Yum Repository
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 http://yum.postgresql.org/9.5/redhat/rhel-7-x86_64/pgdg-centos95-9.5-2.noarch.rpm CentOS/RHEL 6 # rpm -Uvh http://yum.postgresql.org/9.5/redhat/rhel-6-x86_64/pgdg-redhat95-9.5-2.noarch.rpm CentOS/RHEL 5 # rpm -Uvh http://yum.postgresql.org/9.5/redhat/rhel-5-x86_64/pgdg-redhat95-9.5-2.noarch.rpm Fedora 23: # rpm -Uvh http://yum.postgresql.org/9.5/fedora/fedora-23-x86_64/pgdg-fedora95-9.5-3.noarch.rpm Fedora 22 # rpm -Uvh http://yum.postgresql.org/9.5/fedora/fedora-22-x86_64/pgdg-fedora95-9.5-3.noarch.rpm Fedora 21 # rpm -Uvh http://yum.postgresql.org/9.5/fedora/fedora-21-x86_64/pgdg-fedora95-9.5-2.noarch.rpm
For more details visit PostgreSQL repositories link page where you can get repository package rpm for various operating systems.
Installing PostgreSQL Server
After enabling PostgreSQL yum repository in your system use following command to installPostgreSQL 9.5 on your system with yum package manager.
# yum install postgresql95-server postgresql95
Initializing PGDATA
After installing PostgreSQL server, It’s required to initialize it before using first time. To initialize database use below command.
由於版本問題，可能下面的初始化方法不正確，請用第二個:
# /usr/pgsql-9.5/bin/postgresql95-setup initdb
service postgresql-9.5 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/9.5/data/
Start PostgreSQL Server
To start PostgreSQL service using following command as per your operating systems. Also enable PostgreSQL service to auto start on system boot.
For CentOS/RHEL 7 and Fedora 23
# systemctl start postgresql-9.5 # systemctl enable postgresql-9.5
For CentOS/RHEL 6/5 and Fedora 22/21
# service postgresql-9.5 start # chkconfig postgresql-9.5 on
Verify PostgreSQL Installation
After completing above steps, you have installed PostgreSQL 9.5 on your server, Let’s login to postfix to verify that installation completed successfully.
# su - postgres
Use psql command to access PostgreSQL prompt with admin privileges.
$ psql psql (9.5.0) Type "help" for help. postgres=#
You may create 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 9.5 on CentOS/RHEL 7/6/5 and Fedora 23/22/21 systems.