Completed upto lesson 28

answers/lesson-3.yaml

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+#Timed Task
+# command
+kubeclt create role reporter-role --namespace=cks-rbac --verbs="get,list" --resources="configmaps" --dry-run=client -o yaml
+
+kubectl create rolebinding reporter-rolebinding --namespace=cks-rbac --serviceaccount=cks-rbac:report-reader --role=reporter-role --dry-run=client -o yaml
+

answers/network-policy.yaml

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+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: app-control
+  namespace: database
+spec:
+  policyTypes:
+  - Ingress
+  - Egress
+  podSelector:
+    matchLabels:
+      app: db
+  ingress:
+    - from:
+      - nameSpaceSelector:
+          matchLabels:
+            kubernetes.io/metadata: payments
+        podSelector:
+          matchLabels:
+            app: payments
+        ports:
+        - port: 5432
+          protocol: TCP
+  egress:
+   - ports: 
+     - protocol: TCP
+       port: 53
+     - protocol: UDP
+       port: 53