I have two different accounts:
One in Europe eu-central-1: Have the Route53 DNS entries from domain
Another in China cn-north-1: Have the ALB resource and the EC2 resource.
In China, my service is a concourse pipeline. The service is up and running on the instance, and on the target groups I can see the healthy flag. At the instance as well I can access the web page by curl localhost:8080.
I have the entry:
concourse.domain.name CNAME web.account.info.eu-central-1.elb.amazonaws.com
I Can resolve the entry and it's point to the right alb. But still, no answer.
Does anyone have any ideas?
Thanks.
There would be 2 steps to follow to find the route case.
If your ALB public DNS name is working and routing traffic to your instance then please check the value of the "Hosted zone" in the property of ALB and Route 53 match.
If your ALB does not routing traffic make sure your have set up Listener for each traffic type (http,https...ect) which your application is about to listen to and also have target group for perspective port(80,8080...)for each listener traffic type. Make sure each target group has at least one instance to handle each type of traffic on each port.
Hope this was helpful