Pearlicia-Blog

Create a Subdomain in Route53 and Attach it to Elastic Beanstalk Environment

This tutorial guides you through the process of creating a subdomain using Amazon Route 53 and seamlessly integrating it with an Elastic Beanstalk environment. Learn how to establish a distinct subdomain, enabling you to organize and host various applications efficiently.

Step One: Create hosted zone for subdomain

  1. Log in to AWS Console
  2. Search for Route53 on AWS Services
  3. Click on Hosted zones on the route53 dashboard Hosted-zones-button

  4. Click on Create hosted zone button Create-hosted-zone

  5. Fill the form
    • On Domain name field enter the full url to your subdomain
    • On Description field Write a description of your choice
    • On Type select Public hosted zone Hosted-zone-form
    • Add tag if you want to Then click on Create hosted zone orange button Create

Should see a page like this if successful Success

Step Two: Add subdomain NS Values as record on Primary Domain

  1. Scroll down a bit on your newly created subdomain and copy the NS values, all four of them ns-values

  2. Click on Hosted zone from the left navigation pane
  3. Look for your primary domain(If you have many domains on the list) and click on it

  4. In the primary domain page click on Create record create-record

  5. Fill the form
    • On Record name type your subdomain name Don’t include the primary domain name, it will be added by default
    • On Record type Select NS from the list
    • On Value Paste the NS Values you copied from the subdomain
    • On Routing policy Select Simple routing
    • Leave TTL as Default

Then Click on Create records button create-records

Successful message should appear if it went well

Step Three: Create Certificate

  1. Type Certificate manager on the search box and click on the search result cert-manager

  2. Click on the orange color Request a certificate button request-cert

  3. Select Request a public certificate Then click Next Next

  4. Fill the form
    • On Fully qualified domain name Enter your subdomain name including the primary domain name
    • On Validation method Select DNS validation - recommended
    • On Key algorithm Select RSA 2048
    • You can add tag if you want.
    • Then scroll down and Click on the Request button form

  5. If successful, Status should display Pending validation Click on the Certificate ID or Name success

  6. Click on Create records in Route 53 button create-route53

  7. Click on the Create records button create-record-inroute53

  8. If DNS record creation successful success-dns-record

  9. Wait for one to five minutes and refresh your page, the validation status should change from Pending validation to Issued issued

Step Four: Add Listener on Elastic Loadbalancer

  1. Search for elastic beanstalk and click on it ebs-search

  2. Click on the name of your elastic beanstalk Environment name ebs-name

  3. Click on Configuration from the left pane and scroll down config

  4. If your Load balancer under Instance traffic and scaling category, under Capacity is not editable. Click edit on the Instance traffic and scaling category. edit-capacity

Note: You selected Single instance rather than Load balanced when creating your elastic beanstalk, which is why your load balancer details are not displayed.

  1. Still under Instance traffic and scaling under Capacity then Auto scaling group then Environment type Select Load balanced then scroll down capacity

  2. On Listeners Click Add listener button listener-button

  3. Fill the Add listener form
    • On Listener port select 443
    • On Listener protocol select HTTPS
    • On SSL certificate choose the certificate you created
    • On SSL policy Choose any on 2023
    • On Default process leave it on default
    • Then click save listener-form
  4. Scroll down to the bottom and click the Apply button

Step 5: Create Alias for subdomain to use Elastic beanstalk

  1. Search for Route53 on AWS Services
  2. Click on Hosted zones on the route53 dashboard Hosted-zones-button

  3. Click on your subdomain name, then click on the Create record button create-a-record

  4. The initial create record should look like this init-create-form

  5. Fill the form
    • On Record name Leave it as is
    • On Record type select A - Routes traffic to an IPv4 address and some AWS resources
    • Check or Click on the Alias button
    • On the Route traffic to fields
      • On Choose endpoint select Alias to Elastic Beanstalk environment
      • On Choose region select your region
      • On Choose environment select your elastic beanstalk environment
    • On Routing policy select Simple routing
    • Evaluate target health can be Yes
    • Then click on Create records button final-form
  6. If everything was done correctly, a success message will appear.

Step 6: Redirect HTTP to HTTPS

  1. Search for EC2 and click on the search result ec2-search
  2. Click on Load Balancers on the side menu load-balancers
  3. Click on the name of your load balancer name-of-lb
  4. Then click on HTTP:80 at the bottom http:80
  5. Click on default default
  6. Click on Actions then click on Edit rule edit-rule
  7. Leave Listener details and Listener configuration as it is. Then fill out the Default actions category
    • On Routing actions tick Redirect to URL
    • On Redirect to URL select URI parts
    • On Protocol select HTTPS
    • On Port type 443
    • On Status code select 301 - Permanently moved
  8. Click save changes

Successfully modified listener message should display if successful

Enter your newly created subdomain in a browser, it should have https.