The right way to Configure Nginx as Reverse Proxy for Nodejs App

Nodejs is a free open supply, light-weight, scalable and environment friendly JavaScript framework constructed on Chrome’s V8 JavaScript engine, and makes use of an event-driven, non-blocking I/O mannequin. Nodejs is now in all places, and has turn into so widespread for growing software program from web sites, internet apps to community apps and extra.

Nginx is an open supply, high-performance HTTP server, load balancer and reverse proxy software program. It has an easy configuration language making it simple to configure. On this article, we are going to present the right way to configure Nginx as a reverse proxy for Nodejs purposes.

Learn Additionally: The Final Information to Safe, Harden and Enhance Efficiency of Nginx Net Server

Be aware: In case your system already working with Nodejs and NPM, and have your app working on a sure port, go straight to Step four.

Step 1: Putting in Nodejs and NPM in Linux

The most recent model of Node.js and NPM is out there to put in from the official NodeSource Enterprise Linux, Fedora, Debian and Ubuntu binary distributions repository, which is maintained by the Nodejs web site and you will have so as to add it to your system to have the ability to set up the newest Nodejs and NPM packages as proven.

On Debian/Ubuntu

———- Set up Node.js v11.x ———-
$ curl -sL https://deb.nodesource.com/setup_11.x | sudo -E bash –
$ sudo apt-get set up -y nodejs

———- Set up Node.js v10.x ———-
$ curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash –
$ sudo apt-get set up -y nodejs

On CentOS/RHEL and Fedora

———- Set up Node.js v11.x ———-
$ curl -sL https://rpm.nodesource.com/setup_11.x | bash –

———- Set up Node.js v10.x ———-
$ curl -sL https://rpm.nodesource.com/setup_10.x | bash –

Step 2: Making a Nodejs Utility

For demonstration goal, we can be making a pattern software referred to as “sysmon”, which can run on port 5000 as proven.

$ sudo mkdir -p /var/www/html/sysmon
$ sudo vim /var/www/html/sysmon/server.js

Copy and paste the next code within the server.js file (change 192.168.43.31 together with your server IP).

const http = require(‘http’);

const hostname = ‘192.168.43.31‘;
const port = 5000;

const server = http.createServer((req, res) => );

server.hear(port, hostname, () => );

Save the file and exit.

Now begin your node software utilizing the next command (press Ctrl+x to terminate it).

$ sudo node /var/www/html/sysmon/server.js
OR
$ sudo node /var/www/html/sysmon/server.js & #begin it within the background to unencumber your terminal

Now open a browser and entry your software on the URL http://198.168.43.31:5000.

Entry Node App from Browser

Step three: Set up Nginx Reverse Proxy in Linux

We’ll set up the newest model of Nginx from the official repository, as proven beneath.

On Debian/Ubuntu

Create a file referred to as /and many others/apt/sources.record.d/nginx.record and add the next strains to it.

deb http://nginx.org/packages/ubuntu/ bionic nginx
deb-src http://nginx.org/packages/ubuntu/ bionic nginx

Subsequent, add the repository signing key, replace your system package deal index and set up the nginx package deal as follows.

$ wget –quiet http://nginx.org/keys/nginx_signing.key && sudo apt-key add nginx_signing.key
$ sudo apt replace
$ sudo apt set up nginx

On CentOS/RHEL and Fedora

Create a file named /and many others/yum.repos.d/nginx.repo and paste one of many configurations beneath.

CentOS

[nginx]
title=nginx repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/ gpgcheck=zero enabled=1

RHEL

[nginx]
title=nginx repo
baseurl=http://nginx.org/packages/rhel/$releasever/$basearch/ gpgcheck=zero enabled=1

Be aware: As a consequence of variations between how CentOS and RHEL, it’s needed to switch $releasever with both 6 (for 6.x) or 7 (for 7.x), relying upon your OS model.

Subsequent, add the repository signing key and set up the nginx package deal as proven.

# wget –quiet http://nginx.org/keys/nginx_signing.key && rpm –import nginx_signing.key
# yum set up nginx

After efficiently putting in Nginx, begin it, allow it to auto-start at system boot and examine whether it is up and working.

———- On Debian/Ubuntu ———-
$ sudo systemctl standing nginx
$ sudo systemctl allow nginx
$ sudo systemctl standing nginx

———- On CentOS/RHEL ———-
# systemctl standing nginx
# systemctl allow nginx
# systemctl standing nginx

In case you are working a system firewall, you could open port 80 (HTTP), 443 (HTTPS) and 5000 (Node app), which the online server listens on for shopper connection requests.

———- On Debian/Ubuntu ———-
$ sudo ufw permit 80/tcp
$ sudo ufw permit 443/tcp
$ sudo ufw permit 5000/tcp
$ sudo ufw reload

———- On CentOS/RHEL ———-
# firewall-cmd –permanent –add-port=80/tcp
# firewall-cmd –permanent –add-port=443/tcp
# firewall-cmd –permanent –add-port=5000/tcp
# firewall-cmd –reload

Step four: Configure Nginx as Reverse Proxy For Nodejs Utility

Now create a server block configuration file to your Node app below /and many others/nginx/conf.d/ as proven.

$ sudo vim /and many others/nginx/conf.d/sysmon.conf

Copy and paste the next configuration (change 192.168.43.31 together with your server IP and tecmint.lan together with your area title).

server
hear 80;
server_name sysmon.tecmint.lan;

location /

}

Save the adjustments and exit the file.

Lastly, restart the Nginx service to impact the current adjustments.

$ sudo systemctl restart nginx
OR
# systemctl restart nginx

Step 5: Entry Nodejs Utility by way of Net Browser

Now it’s best to be capable to entry your Node app with out offering the port it’s listening on, within the URL: it is a a lot handy approach for customers to entry it.

http://sysmon.tecmint.lan

On your check area title to work, you could setup native DNS utilizing the /and many others/hosts file, open it and add the road beneath in it (bear in mind to alter 192.168.43.31 together with your server IP and tecmint.lan together with your doamin title as earlier than).

192.168.43.31 sysmon.tecmint.lan

Entry Node App by way of Nginx Reverse Proxy

That’s all! On this article, we confirmed the right way to configure Nginx as a reverse proxy for Nodejs purposes. Use the suggestions type beneath to ask any questions or share your ideas about this text.

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