Exposing multiple ports from Docker within Elastic Beanstalk

Question

From reading the AWS documentation, it appears that when using Docker as the platform on Elastic Beanstalk (EB) (as opposed to Tomcat, etc.), only a single port can be expos

Answer 1

You could write an on-start config file for Elastic Beanstalk's LoadBalancer/ReversProxy to forward the additional ports to its EC2 instance(s). an example from Ben Delarre :

"Resources" : {
  "AWSEBLoadBalancerSecurityGroup": {
    "Type" : "AWS::EC2::SecurityGroup",
    "Properties" : {
      "GroupDescription" : "Enable 80 inbound and 8080 outbound",
      "VpcId": "vpc-un1que1d",
      "SecurityGroupIngress" : [ {
        "IpProtocol" : "tcp",
        "FromPort" : "80",
        "ToPort" : "80",
        "CidrIp" : "0.0.0.0/0"
      }],
      "SecurityGroupEgress": [ {
        "IpProtocol" : "tcp",
        "FromPort" : "8080",
        "ToPort" : "8080",
        "CidrIp" : "0.0.0.0/0"
      } ]
    }
  },
  "AWSEBLoadBalancer" : {
    "Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
    "Properties" : {
      "Subnets": ["subnet-un1que1d2"],
      "Listeners" : [ {
        "LoadBalancerPort" : "80",
        "InstancePort" : "8080",
        "Protocol" : "HTTP"
      } ]
    }
  }
}

Ref:

• Customizing AWS EB's ENV http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/environment-resources.html
• http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/using-elb-listenerconfig-quickref.html