This is quick guide howto install PostgreSQL 8.4 (current stable 8.4.7) database server on CentOS, Fedora and Red Hat. Fedora 14, Fedora 13, CentOS 5.5 and Red Hat (RHEL) 5.5 has PostgreSQL 8.4 database server as default so extra repositories is not needed. Personally, I like to use Postgres own repositories, because the latest version of PostgreSQL may be quickly and easily installed. The following commands run as root and postgres user, so “su -” or “sudo -i” first.

Install PostgreSQL 8.4 Database Server Using PostgreSQL’s repositories

Install PostgreSQL repository:


## CentOS
rpm -Uvh http://yum.pgrpms.org/reporpms/8.4/pgdg-centos-8.4-2.noarch.rpm

## Fedora
rpm -Uvh http://yum.pgrpms.org/reporpms/8.4/pgdg-fedora-8.4-2.noarch.rpm

## Red Hat
rpm -Uvh http://yum.pgrpms.org/reporpms/8.4/pgdg-redhat-8.4-2.noarch.rpm

Install postgresql and postgresql-server packages from PostgreSQL’s repositories:

yum install postgresql postgresql-server postgresql-contrib

Alternative PostgreSQL 8.4 Install Method for Fedora 12, Fedora 13, CentOS 5.5, Red Hat (RHEL) 5.5

Install postgresql and postgresql-server packages on CentOS 5.5 and Red Hat (RHEL) 5.5:

yum install postgresql84 postgresql84-server postgresql84-contrib

Install postgresql and postgresql-server packages on Fedora 12 and Fedora 13:

yum install postgresql postgresql-server postgresql-contrib

Configure PostgreSQL 8.4 Database Server

Initialize the cluster first with initdb command:


service postgresql initdb
## OR ##
/etc/init.d/postgresql initdb

Edit /var/lib/pgsql/data/postgresql.conf file:

nano -w /var/lib/pgsql/data/postgresql.conf

Set PostgreSQL server to listen all addresses and Change PostgreSQL port (default is 5432). Add/Uncomment/Edit following lines:


listen_addresses = '*'
port = 5432

Edit /var/lib/pgsql/data/pg_hba.conf file:

nano -w /var/lib/pgsql/data/pg_hba.conf

Add (example) your local network with md5 passwords:


# Local networks
host	all	all	xx.xx.xx.xx/xx	md5
# Example
host	all	all	10.20.4.0/24	md5

Start/Restart PostgreSQL Server:


service postgresql start
## OR ##
/etc/init.d/postgresql start

Change to postgres user:

su postgres

Create test database (as postgres user):

createdb test

Login test database (as postgres user):

psql test

Create New “testuser” Role with Superuser and Password:

CREATE ROLE testuser WITH SUPERUSER LOGIN PASSWORD 'test';

Open PostgreSQL Port (5432) on Iptables Firewall (as root user again)

Edit /etc/sysconfig/iptables file:

nano -w /etc/sysconfig/iptables

Add following line before COMMIT:

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5432 -j ACCEPT

Restart Iptables Firewall:


service iptables restart
## OR ##
/etc/init.d/iptables restart

Test remote connection:

psql -h dbserver -U testuser test