Let’s keep it easy. Linux is one of the best OS for building a server. To build a small Linux web server, you need the following packages – any Linux OS (here, it’s CentOS 7), Apache, MySQL, and PHP. This is why its called LAMP. Sometimes, people add phpMyAdmin to facilitate the MySQL tasks for beginners.
Let me explain step by step. Starting from my test machine, my VM is Centos 7.4 with IP= 192.168.1.100
Install Apache Webserver
CentOS 7 ships with Apache 2.4. It’s a basic package available on CentOS 7. Let’s install it the withfollowingollow command:
yum -y install httpd
You see something like this:
Now, configure your apache to start at boot time
systemctl start httpd.service systemctl enable httpd.service Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service.
If your firewall is activated, please add the following rules to make your servers to be accessible remotely.
firewall-cmd --permanent --zone=public --add-service=http firewall-cmd --permanent --zone=public --add-service=https firewall-cmd --reload
Check if server listening on port 80
[root@osradar-test ~]# netstat -an | grep 80 tcp6 0 0 :::80 :::* LISTEN
Ow!!! Server only listening on TCP6 . It’s not available via IP address. Run this command:
Listen 192.168.1.100:80 ## please put your own IP address
Restart Apache and check netstat
[root@osradar-test conf]# systemctl restart httpd.service [root@osradar-test conf]# netstat -an | grep 80 tcp 0 0 192.168.1.100:80 0.0.0.0:* LISTEN
Everything looks fine. Now, visit your welcome page at http://192.168.1.100. and see the bellow result.
CentOS is using MariaDB instead of MySQL package . MariaDB is open source and fully compatible with MySQL.
Install mariadb-server and client with the following command:
[root@osradar-test conf]# yum install mariadb mariadb-server -y Installed: mariadb.x86_64 1:5.5.56-2.el7 mariadb-server.x86_64 1:5.5.56-2.el7 Dependency Installed: perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 perl-DBD-MySQL.x86_64 0:4.023-5.el7 perl-DBI.x86_64 0:1.627-4.el7 perl-Data-Dumper.x86_64 0:2.145-3.el7 perl-IO-Compress.noarch 0:2.061-2.el7 perl-Net-Daemon.noarch 0:0.48-5.el7 perl-PlRPC.noarch 0:0.2020-14.el7
Enable MySQL service to start at boot and start it now.
systemctl start mariadb.service systemctl enable mariadb.service
Now, set passwords for the MySQL root :
[root@osradar-test conf]# mysql_secure_installation NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MariaDB to secure it, we'll need the current password for the root user. If you've just installed MariaDB, and you haven't set the root password yet, the password will be blank, so you should just press enter here. Enter current password for root (enter for none): <=== just Enter OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MariaDB root user without the proper authorisation. Set root password? [Y/n] y <== set new password New password: Re-enter new password: Password updated successfully! Reloading privilege tables.. ... Success! By default, a MariaDB installation has an anonymous user, allowing anyone to log into MariaDB without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? [Y/n] y <== remove anonymous user ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] n <== allow or not to login with root remotly ... skipping. By default, MariaDB comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] n <== delete test database ... skipping. Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] y <== Reload privileges ... Success! Cleaning up... All done! If you've completed all of the above steps, your MariaDB installation should now be secure. Thanks for using MariaDB! [root@osradar-test conf]#
Test you access and see the created databases
[root@osradar-test conf]# mysql -u root -p Enter password: <<== insert your mysql created password in the step before Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 7 Server version: 5.5.56-MariaDB MariaDB Server Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.00 sec) MariaDB [(none)]>
If you followed everything as said, all things should be fine.
Please note that PHP 7 is not yet supported in CentOS 7. The only supported PHP version is 5.x.
To install the official PHP package just run
yum install php -y
If you choose to install PHP 7.2, you have to activate Remi and EPEL repository.
yum install yum-utils yum install epel-release rpm -Uvh http://rpms.remirepo.net/enterprise/remi-release-7.rpm yum-config-manager --enable remi-php72
Now, let’s install PHP.
yum --enablerepo=remi,remi-php72 install httpd php php-common ------- Installed: php.x86_64 0:7.2.1-1.el7.remi php-common.x86_64 0:7.2.1-1.el7.remi Dependency Installed: php-cli.x86_64 0:7.2.1-1.el7.remi php-json.x86_64 0:7.2.1-1.el7.remi Complete!
Test your PHP page and settings
Add these lines into the file.
<?php phpinfo(); ?>
Now, save and exit.
Restart apache and check your PHP file on http://192.168.1.100/info.php
systemctl restart httpd
To Install additional PHP 7.2 modules, run these commands.
yum --enablerepo=remi,remi-php72 install -y php-pecl-apcu php-cli php-pear php-pdo php-mysqlnd php-pgsql php-pecl-mongodb php-pecl-memcache php-pecl-memcached php-gd php-mbstring php-mcrypt php-xml
This chapter is optional. It’s just to help you to manager your databases via a web interface. This tool is mostly used by beginners and professionals as well.
yum install phpmyadmin
phpMyAdmin is not normally accessible remotely from another PC or servers. That’s why you have to make some changes to make this possible.
Let’s edit phpMyAdmin.conf file using command line:
and adjust the bellow settings
<Directory /usr/share/phpMyAdmin/> AddDefaultCharset UTF-8 <IfModule mod_authz_core.c> # Apache 2.4 Require all granted </IfModule> <IfModule !mod_authz_core.c> # Apache 2.2 Order Deny,Allow Allow from All Allow from 127.0.0.1 Allow from ::1 </IfModule> </Directory>
Now, restart apache to load the new settings.
systemctl restart httpd
Now, check the changes : http://IP/phpmyadmin ( http://192.168.1.100/phpmyadmin/)
You can login with root access already. You can easily defined and create databases and users :
Please feel free to ask questions or comment on this article!!!