The Complete Guide to Install Nginx on CentOS 7 with phpMyAdmin

Installing LEMP (Linux, Nginx, MariaDB, PHP)

Nginx installation and configuration:

Install dependencies before installing Nginx.
```
sudo yum install epel-release
```
Install Nginx using yum.
```
sudo yum install nginx
```
Start Nginx services.
```
sudo systemctl start nginx
```
Check your Nginx server if it is working using your browser.
```
http://youripaddress/
```
Enable Nginx at boot start.
```
sudo systemctl enable nginx
```

PHP installation and configuration:

Include php-mysql php-fpm package.
```
sudo yum install php-mysql php-fpm
```
Browse php.ini directory file.
```
sudo nano /etc/php.ini
```
Look for cgi.fix and update it with the data below.
```
cgi.fix_pathinfo=0
```

Configure www.conf by browsing its location and updating its www.conf file.

sudo nano /etc/php-fpm.d/www.conf

listen = /var/run/php-fpm/php-fpm.sock

listen.owner = nobody
listen.group = nobody

user = nginx
group = nginx

Start PHP processor.
```
sudo systemctl start php-fpm
```
Enable PHP processor to start at boot.
```
sudo systemctl enable php-fpm
```

Virtual hosts configuration and other configuration:

Create a directory for sites-available and sites-enabled.

mkdir -p /etc/nginx/sites-available
mkdir -p /etc/nginx/sites-enabled

Add a configuration file in sites-available folder.

sudo nano /etc/nginx/sites-available/yourdomain.com.conf

Add a configuration in your configuration file (yourdomain.com.conf) using the data below.

server {
    listen	 80;
    server_name  www.yourdomain.com yourdomain.com;

    # note that these lines are originally from the "location /" block
    root   /var/www/yourdomain.com/public_html;
    index index.php index.html index.htm;

    location / {
        try_files $uri $uri/ /index.php?$args;
    }
    error_page 404 /404.html;
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /var/www/yourdomain.com/public_html;
    }

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

Create a symbolic link to sites-enabled.

sudo ln -s /etc/nginx/sites-available/yourdomain.com.conf /etc/nginx/sites-enabled/yourdomain.com

Browse nginx.conf file.
```
sudo nano /etc/nginx/nginx.conf
```
Add the code below inside http to enable your configuration (yourdomain.com.conf) file.
```
include /etc/nginx/sites-enabled/*;
```

Create a directory for your website.

mkdir -p /var/www/yourdomain.com/{public_html,logs}

Browse www directory and change ownership and permission in www directory to access publicly.
```
cd /var/www
```
```
sudo chown nginx:nginx * -R
sudo chmod 755 * -R
```
Restart Nginx service.
```
sudo systemctl restart nginx
```
To know if you have successfully installed and configured PHP, test it using the following steps:
1. Create a PHP file to your site directory.
```
sudo nano /var/www/yourdomain/public_html/info.php
```
2. Add a PHP code to test it.
```
<?php phpinfo(); ?>
```
3. Check your browser to see if it is working by displaying its PHP version and information.
```
http://your-server-ip/info.php
```

MariaDB Installation and Configuration:

Get components, helper package and install using yum.
```
sudo yum install mariadb-server mariadb
```
Start the database services.
```
sudo systemctl start mariadb
```
Secure your database. Read instructions and steps.
```
sudo mysql_secure_installation
```
Start MariaDB at boot by enabling it.
```
sudo systemctl enable mariadb
```