title: Kubernetes calico networkpolicy
body: <p>I am a newbie to Kubernetes and trying to learn calico networking.
  I am following this documentation (<a href="https://docs.aws.amazon.com/eks/latest/userguide/calico.html" rel="nofollow noreferrer">https://docs.aws.amazon.com/eks/latest/userguide/calico.html</a>) 
  and I tried to create a networkpolicy for the traffic to flow between backend to client :</p>
  
  <pre><code>kind: NetworkPolicy
  apiVersion: networking.k8s.io/v1
  metadata:
    namespace: stars
    name: backend-client
  spec:
    podSelector:
      matchLabels:
        role : client
    ingress:
      - from:
          - namespaceSelector:
              matchLabels:
                role: backend
        ports:
          - protocol: TCP
            port: 9000
  </code></pre>
  
  <p>I finished all the 10 steps in the documentation, and i tried to test by creating a policy that would send traffic from the backend to the client with the above policy. </p>
  
  <p>When i applied the policy there was no error , but i don't see the traffic/connection between the two.</p>
  
  <p>Please let me know what is wrong. </p>