How to emulate "Dynamic DNS" by AWS Route 53 without ELB

[theholm]

1. Create AIM role to allow full access to DNZ zone.
   
   Security Policy:
   

   {
     "Version": "2012-10-17",
     "Statement": [
       {
         "Effect": "Allow",
         "Action": [
           "route53:*"
         ],
         "Resource": [
           "arn:aws:route53:::hostedzone/ZONE-ID (not zone name)"
         ]
       },
       {
         "Effect": "Allow",
         "Action": [
           "elasticloadbalancing:DescribeLoadBalancers"
         ],
         "Resource": [
           "*"
         ]
       }
     ]
   }
   



2. Attach AIM role to EC2 instance and launch it.


3. Add following command to OS shutdown script -
   
   aws route53 change-resource-record-sets --hosted-zone-id ZONE-ID --change-batch '{"Changes": [ {"Action": "CREATE","ResourceRecordSet": { "Name": "test.test.com.", "Type": "CNAME", "TTL": 600, "ResourceRecords": [ {"Value": "'`curl http://169.254.169.254/latest/meta-data/public-hostname 2> /dev/null`'" }] } } ] }'



4. Add following command to OS shutdown script -
   
   aws route53 change-resource-record-sets --hosted-zone-id ZONE-ID --change-batch '{"Changes": [ {"Action": "DELETE","ResourceRecordSet": { "Name": "test.test.com.", "Type": "CNAME", "TTL": 600, "ResourceRecords": [ {"Value": "'`curl http://169.254.169.254/latest/meta-data/public-hostname 2> /dev/null`'" }] } } ] }'