Linux – Add sub domain in AWS Route 53

amazon ec2amazon-route53domainlinuxsubdomain

My domain is example.com

I want to add sub domain like subdomain.example.com

My domain register in godaddy. I created Hosted Zone in aws route 53 and changed dns in godaddy. example.com working as i want.

But, now i want to add sub domain in this domain. Bu i don't do this.

I tried first this (site link):

Login to your AWS console.

Click here to go to AWS route53 console. From the left bar click Hosted zones.

From the top bar click Create Hosted Zone.
>
In the right pane, put subdomain.maindomain.com as the domain name and click Create.

Copy the name servers for this domain for further use.

Now go to the records set for your main domain and click Create Record Set.

In the right pane, put subdomain. in the Name section, choose Type as NS
and for Value put the previously copied name servers and then click Create.

But this didn't work.

Then i tried this.

So in that case create a CNAME record where example.com will be canonical name and client.example.com will be alias record.

Once this is done now example.com and client.example.com will both resolve to the same IP address i.e to the Load balancer.

But still didn't work.

How can i do this?

Best Answer

The key trick in setting up a subdomain is linking the subdomain with the parent domain through a set of name servers - NS records. I.e. the subdomain.example.com is known to its set of nameservers (NS records) and the parent domain example.com must know what these NS are for the subdomain. Just like in GoDaddy where you set the example.com's Route53 NS that are then inserted into the .com zone as a link to your domain. Makes sense?

This is how you create a subdomain in Route53:

  1. Create new Hosted Zone subdomain.example.com in Route53 and copy the set of **NS records* to a clipboard or Notepad or somewhere:

    enter image description here

    (I'm using my domain aws.nz for this demo - example.com subdomain can't be created in R53)

  2. The open example.com hosted zone details (or aws.nz in this case) and click Create Record Set. Set:

    • Name: subdomain.example.com
    • Type: NS
    • Value: the list of nameservers from step 1 above.

    enter image description here

  3. Create some record in subdomain, e.g. test.subdomain.example.com=192.0.2.123, wait a minute and try to resolve it:

    ~ $ host test.subdomain.aws.nz
test.subdomain.aws.nz has address 192.0.2.123

Hope that helps :)

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