In our examples, we might use ports such as 3000, 8080 and so on, so we need to declare them explicitly, otherwise the app won’t run. Node.js apps require a port that is not used by the system, but is dedicated to that one app only. Let us now start it, enable it to auto-start at system boot, and see its status: systemctl start firewalld Install it in the usual manner, by using yum: yum install firewalld It supports both IPv4 and IPv6, firewall zones, bridges and ipsets, allows for timed firewall rules in zones, logs denied packets, automatically loads kernel modules, and so on. Let’s now install firewall-cmd, the command line front-end for firewalld (firewalld daemon), for CentOS. Step 2: Change Firewall Rules to Enable Nginx Enable Nginx service to start at server boot: systemctl enable nginx Press ‘y’ twice and the installation will be finished. Add the CentOS 7 EPEL repository with this command: yum install epel-release

We use nano as our editor of choice, and you can install it with this command:Īfter you have logged in as a root user, you will install Nginx.A domain name pointed to your server’s IP address (it can also be a subdomain) using A records at your DNS service provider.Use PM2 to restart the Node.js app on every restart or reboot of the system.Install PM2, a production process manager for Node.js applications with a built-in traffic Load Balancer.Install Let’s Encrypt certificates to serve HTTPS requests.Create the example app to show all characters in upper case.Add NPM packages for the app that we are making.

Install firewall-cmd and enable rules for Nginx.

The app will run in the background, even after system crashes or reboots.

NPM package called PM2 will turn a node.js app into a service.

Access to the site will be secure as only the HTTPS requests will be honored.

Certbot will let us install Let’s Encrypt certificates.

It will make the app accessible from your browser, and in case you ran several sites from the same server, it could serve as a load balancer as well. We are going to install and use the following pieces of software: In this tutorial, we will create a simple Node.js application and put it into a production ready environment.

Centos yum install nodejs