Script: How to Install LEMP Stack on CentOS 9/RHEL 9

The LEMP software stack is a group of software that can be used to serve dynamic web pages and web applications written in PHP. This bash script will install LEMP stack on your CentOS Stream 9 and configure it to maximize its performance of website serving.

# cat /etc/os-release
NAME="CentOS Stream"
VERSION="9"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="9"

Before you begin, let’s take a look this bash script. This script will install and configure the following packages:

• PHP 7.4 and Nginx
• MariaDB 10.8

Usage

1. SSH into your CentOS Stream 9 Linux server.

2. Run the following commands at once to install wget, download the script, make it executable then execute it.

sudo dnf install -y wget
sudo wget "https://filedn.com/lOX1R8Sv7vhpEG9Q77kMbn0/scripts/redhat/install_lemp_centos9.sh"
sudo chmod +x "install_lemp_centos9.sh"
sudo sed -i 's/\r//' "install_lemp_centos9.sh"
sudo /bin/bash "install_lemp_centos9.sh"

Verification

Once done, you can verify the installation with the info.php file or using the following commands to check the version of PHP, Nginx and MariaDB.

# nginx -v
nginx version: nginx/1.18.0 (Ubuntu)

# php -v
PHP 7.4.3 (cli) (built: Aug 17 2022 13:29:56) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.3, Copyright (c), by Zend Technologies

# mariadb -V
mariadb  Ver 15.1 Distrib 10.3.34-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2

Alternatively, you can type the IP address of your CentOS Stream 9 server in a browser address bar to access the default welcome page.

You can remove the downloaded script from your Linux server when the LEMP is installed.

# ls -l
-rwxr-xr-x 1 root root 1987 Oct 27 01:32 install_lemp_centos9.sh
drwx------ 3 root root 4096 Oct 25 13:01 snap

rm -f "install_lemp_centos9.sh"

The Nginx server block needs the following example below for Nginx to process the PHP files. Below is an example of all server {} blocks that process PHP files that need the location ~ .php$ added.

    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_pass unix:/run/php-fpm/www.sock;
        fastcgi_index   index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }

Manually

If you don’t want to download the script from the internet, you can create a script then run it manually on your server.

sudo vi installer.sh

chmod +x installer.sh
./installer.sh

Copy then paste all below lines into the installer.sh file that you have created.

#/bin/sh
###Update the CentOS 9 System
sudo sed -i 's/best=True/best=False/g' /etc/yum.conf
sudo sed -i 's/best=True/best=False/g' /etc/dnf/dnf.conf
sudo dnf erase subscription-manager -y
sudo dnf -y update
sudo dnf config-manager --set-enabled crb

###Configure SELinux and Firewall
sudo sed -i 's/enforcing/disabled/g' /etc/selinux/config
firewall-cmd --permanent --zone=public --add-service=http
firewall-cmd --permanent --zone=public --add-service=https
firewall-cmd --reload

####Install PHP7.4 and Nginx
sudo dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
sudo dnf -y install dnf-utils http://rpms.remirepo.net/enterprise/remi-release-9.rpm
sudo dnf -y install https://dl.fedoraproject.org/pub/epel/epel-next-release-latest-9.noarch.rpm
sudo dnf -y update --refresh
sudo dnf module enable php:remi-7.4 -y

###Install PHP 7.4 Extensions
sudo dnf update -y
sudo dnf -y install nginx php php-cli
sudo dnf -y install php-fpm php-gd php-json php-mbstring php-mysqlnd php-xml php-xmlrpc php-opcache
sudo sed -i 's/upload_max_filesize = 2M/upload_max_filesize = 64M/g' /etc/php.ini
sudo sed -i 's/post_max_size = 8M/post_max_size = 64M/g' /etc/php.ini
systemctl restart php-fpm && systemctl enable php-fpm
systemctl restart nginx && systemctl enable nginx

###Configure php-fpm
sudo sed -i 's/user = apache/user = nginx/g' /etc/php-fpm.d/www.conf
sudo sed -i 's/group = apache/group = nginx/g' /etc/php-fpm.d/www.conf
sudo sed -i 's/listen = 127.0.0.1:9000/listen =/run/php-fpm/www.sock/g' /etc/php-fpm.d/www.conf
sudo sed -i 's/;listen.owner = nobody/listen.owner = nginx/g' /etc/php-fpm.d/www.conf
sudo sed -i 's/;listen.group = nobody/listen.group = nginx/g' /etc/php-fpm.d/www.conf

#### Install Packages for MariaDB
sudo curl -LsS -O https://downloads.mariadb.com/MariaDB/mariadb_repo_setup
sudo bash mariadb_repo_setup --mariadb-server-version=10.8
sudo dnf clean all
sudo dnf -y install MariaDB-server MariaDB-client MariaDB-backup
sudo systemctl enable mariadb && sudo systemctl start mariadb
sudo mariadb-secure-installation

#### Restart all services
systemctl restart nginx && systemctl restart php-fpm && systemctl restart mariadb.service