Exposing two ports in Google Container Engine

Question

Is it possible to create a Pod in the Google Container Engine where two ports are exposed: port 8080 is listening for incoming content and port 80 distributes this content to clients?

The following command to create a Pod is given as example by Google:

kubectl run hello-node --image=gcr.io/${PROJECT_ID}/hello-node --port=8080

I can't seem to define a listening port, and when adding a second "--port=" switch only one port is exposed. Is there a way to expose a second port or am I limited to one port per container?

Answer 1

No, you cannot specify multiple ports in kubectl run. But you can use kubectl create to create a replication controller, and specify multiple ports for the container.

https://github.com/kubernetes/examples/blob/master/cassandra/cassandra-statefulset.yaml has an example:

ports:
- containerPort: 7000
  name: intra-node
- containerPort: 7001
  name: tls-intra-node
- containerPort: 7199
  name: jmx
- containerPort: 9042
  name: cql

Answer 2

Pointed out in another answer using kubernetes allows targeting, but also multiple ports:

kubectl expose deployment example --type=LoadBalancer --port 8080,8081 --target-port 80