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Cluster: qa-cluster Master node: master Worker node: worker1 You can switch the cluster/configuration context using the following command: [desk@cli] $ kubectl config use-context qa-cluster Task: Create a NetworkPolicy named restricted-policy to restrict access to Pod product running in namespace dev. Only allow the following Pods to connect to Pod products-service: 1. Pods in the namespace qa 2. Pods with label environment: stage, in any namespace
Correct Answer:
$ k get ns qa --show-labels NAME STATUS AGE LABELS qa Active 47m env=stage $ k get pods -n dev --show-labels NAME READY STATUS RESTARTS AGE LABELS product 1/1 Running 0 3s env=dev-team apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: restricted-policy namespace: dev spec: podSelector: matchLabels: env: dev-team policyTypes: - Ingress ingress: - from: - namespaceSelector: matchLabels: env: stage - podSelector: matchLabels: env: stage [desk@cli] $ k get ns qa --show-labels NAME STATUS AGE LABELS qa Active 47m env=stage [desk@cli] $ k get pods -n dev --show-labels NAME READY STATUS RESTARTS AGE LABELS product 1/1 Running 0 3s env=dev-team [desk@cli] $ vim netpol2.yaml apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: restricted-policy namespace: dev spec: podSelector: matchLabels: env: dev-team policyTypes: - Ingress ingress: - from: - namespaceSelector: matchLabels: env: stage - podSelector: matchLabels: env: stage [desk@cli] $ k apply -f netpol2.yaml Reference: https://kubernetes.io/docs/concepts/services-networking/network-policies/ [desk@cli] $ k apply -f netpol2.yaml Reference: https://kubernetes.io/docs/concepts/services-networking/network-policies/
