How to Set Up Nginx as a Reverse Proxy Server for PM2 on CentOS Stream 9

To set up Nginx as a reverse proxy server for PM2 on CentOS Stream 9, follow these steps:

Step 1 : Ensure your system is up-to-date by running the following command:

sudo dnf update

Step 2 : Install Nginx using the package manager:

sudo dnf install nginx

Step 3 : Create a New Configuration for the App.

sudo nano /etc/nginx/conf.d/example.com.conf

Add the following configuration, adjusting the values accordingly:

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

    location / {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
}

Save the file and exit the text editor.

Step 4 : Test Configuration

Check the Nginx configuration for syntax errors:

sudo nginx -t

Step 5 : Restart Nginx to apply the new configuration:

sudo systemctl restart nginx

Step 6 : If SELinux is enabled, allow Nginx to connect to the network:

sudo setsebool -P httpd_can_network_connect true

Step 7 : Visit your domain in a web browser to verify that the reverse proxy is working correctly.

Congratulations! You have successfully set up Nginx as a reverse proxy server for PM2 on CentOS Stream 9.