Exposing to public more than 1 port with AWS ECS service and Elastic LoadBalancer

Question

I have service that exposes multiple ports and it worked fine with kubernetes but now we move it to AWS ECS. It seems I can only expose ports via Load Balancer and I am limited to 1 port per service/tasks even when docker defines multiple ports I have to choose one port

Add to load balancer button allows to add one port. Once added there is no button to add second port.

Is there any nicer workarround than making second proxy service to expose second port?

UPDATE: I use fargate based service.

Answer 1

You don't need any workaround, AWS ECS now supports multiple target groups within the same ECS service. This will be helpful for the use-cases where you wanted to expose multiple ports of the containers.

Currently, if you want to create a service specifying multiple target groups, you must create the service using the Amazon ECS API, SDK, AWS CLI, or an AWS CloudFormation template. After the service is created, you can view the service and the target groups registered to it with the AWS Management Console.

For example, A Jenkins container might expose port 8080 for the Jenkins web interface and port 50000 for the API.

Ref:

https://docs.aws.amazon.com/AmazonECS/latest/developerguide/register-multiple-targetgroups.html

https://aws.amazon.com/about-aws/whats-new/2019/07/amazon-ecs-services-now-support-multiple-load-balancer-target-groups/