Installing Nginx as a reverse proxy in front of Apache on CentOS 7 involves several steps:

1. Install and Configure Apache:

Install Apache.

Code

    sudo yum install httpd -y

• Configure Apache to listen on a different port (e.g., 8080) to avoid conflict with Nginx:

Code

    sudo sed -i 's/^Listen 80/Listen 8080/' /etc/httpd/conf/httpd.conf

Start and enable Apache.

Code

    sudo systemctl start httpd
    sudo systemctl enable httpd

• Adjust firewall rules for Apache (if needed):

Code

    sudo firewall-cmd --permanent --add-port=8080/tcp
    sudo firewall-cmd --reload

2. Install and Configure Nginx:

Install EPEL repository (required for Nginx).

Code

    sudo yum install epel-release -y

install nginx.

Code

    sudo yum install nginx -y

Configure Nginx as a reverse proxy.

Edit the Nginx configuration file (e.g., /etc/nginx/nginx.conf or a new virtual host file in /etc/nginx/conf.d/):

Code

    server {
        listen 80;
        server_name your_domain.com; # Replace with your domain or IP

        location / {
            proxy_pass http://127.0.0.1:8080; # Apache's address and port
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }
    }

Start and enable Nginx.

Code

    sudo systemctl start nginx
    sudo systemctl enable nginx

Adjust firewall rules for Nginx.

Code

    sudo firewall-cmd --permanent --add-service=http
    sudo firewall-cmd --permanent --add-service=https # If using SSL/TLS
    sudo firewall-cmd --reload