Install CentOS (minimal install).

CentOS installation

Configure network

Run: ip a to find your network adaptor's name. In my case the adaptor is called ens32.

Navigate to /etc/sysconfig/network-scripts/ and open network configuration file with your network adaptor name, i.e. ifcfg-ens32

vi ifcfg-ens32

Edit the file replacing all IP addresses according to your network requirements. 

HWADDR =00:0B:27:A1:DC:1A

Start network:

service network start

Run: ip a again to make sure configuration was applied correctly. You should now have working network connection.

If you need to change anything, modify the same file and run:

service network restart

Install nano editor (optional)

I'm not a big fan of vi. My preferred editor is nano. To install it run:

yum install nano

Change the server hostname

CentOS servers have 3 type of hostnames: static, transient and pretty.

To change all 3 hostnames run:

hostnamectl set-hostname SERVER-NAME

To review the hostnames:
hostnamectl --static
hostnamectl --transient
hostnamectl --pretty

To add the new server hostname to the hosts file, modily: /etc/hosts

Install Apache 

yum install httpd

Enable Apache service to start when booting:

systemctl enable httpd.service

Start Apache service:

systemctl start httpd.service

Other useful commands:
Check if Apache running: sudo systemctl is-active httpd.service
Stop Apache: sudo systemctl stop httpd.service
Restart Apache: sudo systemctl restart httpd.service

Default HTML directory: /var/www/html

Configure firewall to allow HTTP access

firewall-cmd --permanent --zone=public --add-service=http

firewall-cmd --reload

If you now browse to the server's IP address, you should see Apache welcome message.

Apache test page

If you need to temporary disable firewall, run:

systemctl stop firewalld

To start firewall again:

systemctl start firewalld

To check firewall status:

systemctl status firewalld

Install PHP

yum install php

Restart Apache: systemctl restart httpd.service

To test PHP:

Create file /var/www/html/info.php with content:

<?php phpinfo(); ?>

Then browse to
Where - server's IP address

You should get PHP test page:

PHP test page

Install MySQL (MariaDB)

CantOS 7 is now distributing MariaDB instead than MySQL. MariaDB is a community developed fork of MySQL that is designed to be a drop-in replacement for MySQL.

Install MariaDB

yum install mariadb-server

Start the database engine:

systemctl start mariadb

Secure the database:


Just follow the wizard and complete following: setup root password, disable anonymous user, disable root remote login, delete test database, reload privilege tables.

Enable MariaDB to start on boot:

systemctl enable mariadb.service

Other useful MariaDB commands:

Check version:
mysql --version
Connect to console:
mysql -u root -p

Configure firewall to allow remote access to MySQL (MariaDB)

This is only required if you need your databases to be accessible over the network

firewall-cmd --permanent --zone=public --add-service=mysql

firewall-cmd --reload

Install phpMyAdmin (optional)

phpMyAdmin is not included in default CentOS repository therefore we'll nee to add EPEL (Extra Packages for Enterprise Linux) repo.

EPEL can be installed by running:

yum install epel-release

Check repository list and make sure EPEL is now present:

yum repolist

yum repolist

Install phpMyAdmin:

yum install phpmyadmin

Navigate to /etc/httpd/conf.d and edit file phpMyAdmin.conf.
You need to fine lines: Require ip and Allow from, and next to them add new lines with the same test replacing with the IP you will be connecting from.

Restart Apache:

systemctl restart httpd.service

To make sure that phpMyAdmin is working, connect to the server's ip address, adding /phpMyAdmin at the end on the URL (i.e. and you should be greeted with phpMyAdmin login page

phpMyAdmin login page

Install Sendmail (optional)

If you intend to use Sendmail, install it by running:


yum install sendmail

yum install sendmail-cf


To restart Sendmail service:

service sendmail restart


Sendmail path:


Email logs are located in:




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