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Deploy Node.js Application To AWS Beanstalk With SSL and Load Balancer

Deploy Node.js Application To AWS Beanstalk With SSL and Load Balancer

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Shams Nahid

Published on Aug 6, 2021

4 min read

AWS Beanstalk acts as an Infrastructure as a Service (IaaS). We will deploy a node application to the AWS Beanstalk. Then we will ensure the HTTPS connection with Application Load Balancer. To make this work, we will make use of the following AWS services,

  • AWS Beanstalk
  • Application Load Balancer (From Beanstalk Config)
  • Certificate Manager (To get a free SSL Certificate)
  • Route 53

Our Architecture will be followings,

Untitled Diagram.png

To accomplish the goal, we will go with following steps,

  • Run the Node.js app in local machine
  • Deploy the app to Elastic Beanstalk
  • Get a free SSL certificate
  • Secure our app

Prerequisite


We have to make sure, we have

  • Node.js installed in our local machine (To test the app locally)

We will deploy the code to Beanstalk manually. So we do not need the AWS CLI or Elastic Beanstalk (eb) CLI.

Run the Application in Local Machine


First, get the code from GitHub,

git clone https://github.com/socketio/chat-example.git

Go to the code repository,

cd chat-example

To install dependencies,

yarn

You may use npm instead of the yarn. In this case use npm i.

Run the app in local machine

yarn start

If you use npm, use npm start.

The server should be up and running on port 3000. Go to browser and open http://localhost:3000. This is a chat app and to verify functionalities, you may open these in two different browser windows and do messaging back and forth.

Deploy To Elastic Beanstalk


Before we go to aws console, we need to zip the source code for Elastic Beanstalk. It provides several options to deploy the code,

  • CodePipeline
  • S3
  • Zip file

To make the source code zipped, we can go to the zip directory and do the zipping,

cd chat-example
zip -r chat-example.zip .

This will create a zip file named, chat-example.zip. You may manually zip the source files from the source folder.

Now go to https://aws.amazon.com and find the service Elastic Beanstalk. To create an application in Elastic Beanstalk we have to go through a couple of following steps,

  • Click Create application
  • As application name, we can use chat-example
  • As platform choose Node.js
  • As application code,
    • Choose Upload your code
    • As Source code origin select the Local file
    • Upload the chat-example.zip file we created in our local machine

This might take several minutes. When the application is created, we will find the application URL at Go to Environment.

Test the app in two different browser windows.

Getting SSL Certificates


Before we get a certificate, we have to ensure, we have a Hosted Zone in Route 53 with a domain.

In my case, I already have a domain shams-nahid.com. I will put this application in chat-example.shams-nahid.com. So I will get the certificate for chat-example.shams-nahid.com.

So first, go the the Certificate Manager service. Request a public certificate and put the desired domain. In my case, it is chat-example.shams-nahid.com. Since my hosted zone is in AWS, DNS Validation will be faster. Confirm the request and add the DNS Resolution to the Route 53.

Click Complete and wait for validation to be completed. It may take 5-30 minutes.

Enable HTTPS


Now we have a running application in Elastic Beanstalk and also have a SSL certificate we can use.

We left two steps to use SSL in the Beanstalk have,

  • Add the Load Balancer to the Elastic Beanstalk
  • Update Route 53 Record to point to the Load Balancer

Add Load Balancer

To use HTTPS connection, we must make use of the Load Balancer. The Load Balancer will have a secure connection and it will route the traffic to Elastic Beanstalk.

In the Elastic Beanstalk select Environment -> Configuration -> Load Balancer settings.

Now add a listener with the following config,

  • As Port use 443 (Default port for SSL)
  • As Protocal use HTTPS
  • As Certificate use the newly created certificate
  • As SSL Policy use the latest one

Apply and wait for the application to be updated.

Go to Elastic Beanstalk configuration for capacity and make sure the Environment Type is Load Balanced.

Update Route 53 Records

Go to the Route 53 service hosted zone and add create a record,

  • As record name chat-example (Since, in my case URL are chat-example.shams-nahid.com)
  • Record type should be A
  • Value should be Alias
    • As alias use Application and Classic Load Balancer
    • Put your region
    • Select the ALB URL from the dropdown

Now hit Create Record button and we are all set to go.

Go to the URL https://chat-example.shams-nahid.com and we should see the application is up and running.

You might chaek the videos on deploying app and secure connection

Please feel free to comment out any issues you are facing. I will assist accordingly.

 
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