How to Set Up Nginx as a Reverse Proxy Server for PM2 on CentOS 7

To Set Up Nginx as a Reverse Proxy Server for PM2 on CentOS 7, follow these steps:

Step 1 : Ensure your system is up to date:

sudo yum update

Step 2 : Install Nginx from the CentOS repository:

sudo yum install epel-release
sudo yum install nginx

Step 3 : Create a new configuration file for your domain in Nginx's conf.d directory:

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

Add the following configuration (modify as needed for your setup):

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;
    }
}

Step 4 : Check if the Nginx configuration syntax is correct:

sudo nginx -t

Step 5 : If the test is successful, restart Nginx to apply the new configuration:

sudo systemctl restart nginx

Step 6 : If SELinux is enforcing, run the following command to allow Nginx to make network connections:

sudo setsebool -P httpd_can_network_connect true

Step 7 : Open your web browser and navigate to http://example.com. You should see your PM2 app served through Nginx.

Congratulations! You have successfully set up Nginx as a reverse proxy server for PM2 on CentOS 7.