The provided Kubernetes NetworkPolicy YAML configuration indicates that the policy applies to pods with the label tier: backend in the default namespace1.The ingress rule allows traffic from pods with the label tier: api1.Therefore, a request issued from a pod bearing only the tier:frontend label to a pod bearing the tier: backend label will be blocked by this networkPolicy1.This is because the networkPolicy does not have a rule allowing ingress from pods with the tier: frontend label1. For more information on Kubernetes NetworkPolicies, you can refer to theKubernetes Documentation on Network Policies.
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