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How to create a CNAME record for a Route 53 Domain

22 March,2024 by Rambler

Question : How do I create a CNAME record on an AWS Route 53 Private Hosted Zone (PHZ)   Dimain using AWS CLI ?   I want to use the CNAME record to route traffic to an Aurora Cluster 

 

Answer: Assuming you have a valid PHZ set up with with a domain . You can check by issuing the following AWS CLI commands in the AWS account .

 

--get the Id of the domain 
aws route53 list-hosted-zones-by-name --query "HostedZones[].[Name,Id]" --output table
--use the Id to view the vpc- details 
aws route53 get-hosted-zone --id 

Once you've confirmed there is a valid PHZ and domain , the next step is to create the CNAME record. You will need at minimum some information :

  • Hosted Zone ID - use the commands above 
  • The subdomain to be used as part of the referemces

 

Create a json file similar to the ddetails below . This will create a new CNAME record on a PHZ domain "mydomain.net" . Th  new cname will be "jvr53.mydomain.net" routing traffic to "myaurora.test-cluster-prim-27022024.cluster-yeyeyeye.us-west-2.rds.amazonaws.com"

 

{
  "Comment": "r53_cname_test",
  "Changes": [
    {
      "Action": "CREATE",
      "ResourceRecordSet": {
        "Name": "jvr53.mydomain.net",
        "Type": "CNAME",
        "TTL": 300,
        "ResourceRecords": [
          {
            "Value": "myaurora.test-cluster-prim-27022024.cluster-yeyeyeye.us-west-2.rds.amazonaws.com."
          }
         ]
      }
    }
   ]
}



The next step is to issue the aws cli command  using the route53  service call to change-resource-record-sets,  referencing the json file created above .

 

aws route53 change-resource-record-sets  --hosted-zone-id /hostedzone/VB0000000NMCCCCC  --change-batch file://create_cname.json

To view the list of cnames associated with the domain 

 

aws route53 list-resource-record-sets --hosted-zone-id hostingid

Author: Rambler (http://www.dba-ninja.com)


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