title: Communication between docker containers in aws ecs through rabbitmq
body: <p>My team is developing an application which consist of 20 microservice, This will be deployed in aws ecs ec2 instance. I am planning to launch 3 aws ec2 instance in the cluster. Each microservice will have its on task definition and service. </p>
  
  <p>docker container is build, pushed to aws ecr and then deployed to ecs via jenkins using Jenkinsfile. In the taskdefinition json files I have set the host port to 0 so that each docker container host port will be random and there wont be any port conflict if we increase the desired count of a service to 2 or more.</p>
  
  <p>I guess the containers on same task definition can be communicate using links but in my case we cannot predict on which instance the docker containers are. </p>
  
  <p>If we use rabbitmq on a different server how it can talk with the different microservice? I am using the Network Mode as "default network" in taskdefinition, should I change that to awsvpc? </p>