Pre-flight Checks
To find out which Linux distribution you are running, use this command:
cat /etc/redhat-release
It’s now time to verify that our yum environment is clean and up to date, we’ll do this by cleaning all of the yum cache, and update yum using:
yum clean all
yum update
Installing LAMP
Now that we know what environment we’re working in let’s get started on installing the LAMP stack on CentOS 7:
L – Linux
The first part of the stack is Linux. This is your operating system and since it is already installed there no need to worry about installing it or make any modifications. Installing CentOS 7 is easy to download and install using the image files that are provided from centos.org. CentOS has a helpful installation guide if you need to reference it for additional installation instructions.
A – Apache
Apache is the next piece of the LAMP stack. Apache is the webserver software that is responsible for serving the content to your web browser from the server. It takes the requests that it receives and sends back the HTML code for your browser to interpret.
Install Apache using Yum:
yum -y install httpd
Open ports in the FW:
firewall-cmd --permanent --add-service=http -add-service=https
firewall-cmd --reload
Start and enable apache to run when the server starts:
systemctl start httpd
systemctl enable httpd
Default Apache installation locations:
Some important server locations to remember for Apache are listed below. These are out-of-the-box defaults and can be changed as you see fit:
httpd binary: /sbin/httpd
Apache configuration file: /etc/httpd/conf/httpd.conf
Website files: /var/www/html/
Apache logs: /var/log/httpd/
M – MySQL/MariaDB
MySQL and MariaDB are what handle your website’s database. In most of today’s websites, data is not stored in flat or static files. Instead, the base of the site is coded in PHP which can pull information from your website’s database to deliver more dynamic content. MySQL and MariaDB are popular database servers that help house that information. MariaDB is becoming more widely used, so we’ll use for installation. Both are very similar in setting up and configuring.
Install MariaDB:
yum -y install mariadb-server
systemctl start mariadb
Although securing mysql is optional, it is strongly recommended:
mysql_secure_installation
**Run through the steps on screen to secure your Mysql/MariaDB environment
Enable MariaDB to start when the server starts:
systemctl enable mariadb
Default installation locations:
Some important server locations to remember for MySQL/MariaDB are listed below. These are out-of-the-box defaults and can be changed as you see fit:
MariaDB binary: /bin/mysql
MariaDB Configuration file: /etc/my.cnf
Database location: /var/lib/mysql
MariaDB logs: /var/log/mariadb/mariadb.log
P – PHP
Most websites that exist today are built using PHP coding. PHP provides the programmer with more options for dynamic content compared to flat html code. Several PHP versions are available for use depending on what PHP version the website was built in. We’ll install the latest version of PHP.
In order to install the latest PHP version, we first need to install CentOS’s Software Collection repository (SCL):
yum -y install centos-release-scl.noarch
We’ll now have access to install PHP 7.2 :
yum -y install rh-php72
Now we’ll fix the symbolic link for the binary:
ln -s /opt/rh/rh-php72/root/usr/bin/php /usr/bin/php
Install the updated PHP Module for Mysql/MariaDB:
yum -y install rh-php72-php-mysqlnd
Restart apache to work with the newly installed PHP:
systemctl restart httpd