What is LAMP stack?
LAMP stack is a combination of operating system and open source softwares stack which are significant in setting up a server initially. The acronym stands for Linux, Apache HTTP server, MySQL/MariaDB and PHP/Perl/Python. This article will guide you through the steps involved in installing Apache HTTP server, MySQL and PHP on your server assuming that the Operating system CentOS 7 is already installed in it.
Installing Apache HTTP server
Apache or Apache HTTP is the most commonly used web server around the world accounting for more than 50% of the market share currently. To install apache follow the steps below:
Step 1: Use the following commands in the terminal
sudo yum update
After the update process is finished, install Apache HTTP server using the command.
sudo yum install httpd
You will receive an authentication message, accept it by entering Y and continue with the installation. Then start your web server installed on the VPS by running the command
sudo systemctl start httpd.service
Step 2: Verify the installation by entering the following URL on your web browser.
If the web server has been installed properly, your web browser will direct you to the web page that looks similar to the following:
MariaDB is an open source database management software which is quite similar in many ways to MySQL and is infact better than the latter in various performance aspects. So ideally it is a great alternative for the ever so popular MySQL. MariaDB is a fork of MySQL which maintains high compatibility with MySQL and it is an integral part in many LEMP stacks installations worlwide.
Installing MariaDB on to a server is quite a simple process and in this article we will provide you with the steps on how to install and secure MariaDB on to a server running CentOS 7.
Step 1: Install MariaDB
Installing MariaDB is as easy as running a single command. Run the below command in the terminal to install.
sudo yum install mariadb-server
A prompt message will appear before completion of installation which resembles as follows
Is this ok [y/d/N]:
Accept the prompt by entering y and then hit Enter.
Step 2: Start MariaDB and configure to start on boot
Now that MariaDB has been installed on your server, its time to start the service manually. This is done by running the following command in the terminal.
sudo systemctl start mariadb
Since this command won’t display any output after its execution, you need to verify if the service has started. You can verify the status of MariaDB by executing the below command in the terminal.
sudo systemctl status mariadb
When the service is up and running you will receive the following result:
Output: mariadb.service - MariaDB database server Loaded: loaded (/usr/lib/systemd/system/mariadb.service; disabled; vendor preset: disabled) Active: active (running) since Mon 2016-12-19 06:47:18 UTC; 2min 25s ago Process: 9179 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID (code=exited, status=0/SUCCESS) Process: 9099 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n (code=exited, status=0/SUCCESS) Main PID: 9178 (mysqld_safe) CGroup: /system.slice/mariadb.service ├─9178 /bin/sh /usr/bin/mysqld_safe --basedir=/usr └─9336 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --log-error=/var/log/mariadb/mariadb.log --pid-fil... Dec 19 06:47:16 Maria mariadb-prepare-db-dir: The latest information about MariaDB is available at http://mariadb.org/. Dec 19 06:47:16 Maria mariadb-prepare-db-dir: You can find additional information about the MySQL part at: Dec 19 06:47:16 Maria mariadb-prepare-db-dir: http://dev.mysql.com Dec 19 06:47:16 Maria mariadb-prepare-db-dir: Support MariaDB development by buying support/new features from MariaDB Dec 19 06:47:16 Maria mariadb-prepare-db-dir: Corporation Ab. You can contact us about this at email@example.com. Dec 19 06:47:16 Maria mariadb-prepare-db-dir: Alternatively consider joining our community based development effort: Dec 19 06:47:16 Maria mariadb-prepare-db-dir: http://mariadb.com/kb/en/contributing-to-the-mariadb-project/ Dec 19 06:47:16 Maria mysqld_safe: 161219 06:47:16 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'. Dec 19 06:47:16 Maria mysqld_safe: 161219 06:47:16 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql Dec 19 06:47:18 Maria systemd: Started MariaDB database server.
Ensure that is starts on boot up as well by running the following command.
sudo systemctl enable mariadb
Output: Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.
Step 3: Secure MariaDB
You can improve the security of the MariaDB server by changing options like remote root logins and sample users. To implement this security step, use this command.
A series of prompts will appear once the command is executed. First one would be to enter the root password, since there is no root password set as of now, hit Enter and continue.
Next you will be asked if you would like to set a new root password, accept it and set a new root password. Then Enter Y on all the prompts that follow which will finish the process.
Step 4: Verify the installation
To verify if the installation is working properly, run this command.
mysqladmin -u root -p version
Output: Enter password: mysqladmin Ver 9.0 Distrib 5.5.52-MariaDB, for Linux on x86_64 Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others. Server version 5.5.52-MariaDB Protocol version 10 Connection Localhost via UNIX socket UNIX socket /var/lib/mysql/mysql.sock Uptime: 23 min 10 sec Threads: 1 Questions: 25 Slow queries: 0 Opens: 1 Flush tables: 2 Open tables: 27 Queries per second avg: 0.017
PHP is a scripting language used in web designing to build dynamic web pages.
Step 1: Use the following command in the terminal
sudo yum install php php-mysql
You will receive a prompt message, enter y and finish the installation.
Step 2: Lots of additional PHP modules are available that can be installed easily. Even though this is an optional step, if you want to install additional modules follow the steps below.
To check the available modules, enter the command in the terminal
yum search php-
Output: Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.fibergrid.in * extras: mirror.fibergrid.in * updates: mirror.fibergrid.in ========================================================================== N/S Matched: php- =========================================================================== php-bcmath.x86_64 : A module for PHP applications for using the bcmath library php-cli.x86_64 : Command-line interface for PHP php-common.x86_64 : Common files for PHP php-dba.x86_64 : A database abstraction layer module for PHP applications php-devel.x86_64 : Files needed for building PHP extensions php-embedded.x86_64 : PHP library for embedding in applications php-enchant.x86_64 : Human Language and Character Encoding Support php-fpm.x86_64 : PHP FastCGI Process Manager php-gd.x86_64 : A module for PHP applications for using the gd graphics library php-imap.x86_64 : A module for PHP applications that use IMAP php-intl.x86_64 : Internationalization extension for PHP applications php-ldap.x86_64 : A module for PHP applications that use LDAP php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling php-mysql.x86_64 : A module for PHP applications that use MySQL databases php-odbc.x86_64 : A module for PHP applications that use ODBC databases php-pdo.x86_64 : A database access abstraction module for PHP applications php-pear.noarch : PHP Extension and Application Repository framework php-pecl-apc.x86_64 : APC caches and optimizes PHP intermediate code php-pecl-apc-devel.i686 : APC developer files (header) php-pecl-apc-devel.x86_64 : APC developer files (header) php-pecl-memcache.x86_64 : Extension to work with the Memcached caching daemon php-pgsql.x86_64 : A PostgreSQL database module for PHP php-process.x86_64 : Modules for PHP script using system process interfaces php-pspell.x86_64 : A module for PHP applications for using pspell interfaces php-recode.x86_64 : A module for PHP applications for using the recode library php-snmp.x86_64 : A module for PHP applications that query SNMP-managed devices php-soap.x86_64 : A module for PHP applications that use the SOAP protocol php-tidy.x86_64 : Standard PHP module provides tidy library support php-xml.x86_64 : A module for PHP applications which use XML php-xmlrpc.x86_64 : A module for PHP applications which use the XML-RPC protocol php-zts.x86_64 : Thread-safe PHP interpreter for use with the Apache HTTP Server Name and summary matches only, use "search all" for everything.
To know the details of the package or module type the following
yum info module-name
In place of module-name, enter the name of the corresponding module. For example,
yum info php-bcmath
To install that package, type the following
sudo yum install php-bcmath
You can install multiple php packages according to your requirements.
Step 3: To verify if php is installed properly into your VPS, create a file by using the command below
sudo vim /var/www/html/info.php
Press the key I to edit the file, enter the following content in the file and then save and exit by pressing ESC key followed by :wq! then hit Enter.
<?php phpinfo(); ?>
Restarting web server
The final step in installing the LAMP stack on CentOS 7 is to restart the Apacheweb server . This is done in order for the web server to recognize the changes done to the server.
sudo systemctl restart httpd
This will restart the server immediately and there you go. You have now installed LAMP stack on your server running on CentOS 7.
You can check the installation of php by entering the following URL in your web browser.
sudo rm /var/www/html/info.php