mock exam 1
5)
Create a service messaging-service to expose the messaging application within the cluster on port 6379.
Run the command: kubectl expose deployment hr-web-app --type=NodePort --port=8080 --name=hr-web-app-service --dry-run=client -o yaml > hr-web-app-service.yaml to generate a service definition file.
Now, in generated service definition file add the nodePort field with the given port number under the ports section and create a service.
10)
Expose the hr-web-app as service hr-web-app-service application on port 30082 on the nodes on the cluster.
kubectl expose deployment hr-web-app --type=NodePort --port=8080 --name=hr-web-app-service --dry-run=client -o yaml > hr-web-app-service.yaml
mock exam2
7)
Create a nginx pod called nginx-resolver using image nginx, expose it internally with a service called nginx-resolver-service. Test that you are able to look up the service and pod names from within the cluster. Use the image: busybox:1.28 for dns lookup. Record results in /root/CKA/nginx.svc and /root/CKA/nginx.pod
Use the command kubectl run and create a nginx pod and busybox pod. Resolve it, nginx service and its pod name from busybox pod.
To create a pod nginx-resolver and expose it internally:
kubectl run nginx-resolver --image=nginx
kubectl expose pod nginx-resolver --name=nginx-resolver-service --port=80 --target-port=80 --type=ClusterIP
To create a pod test-nslookup. Test that you are able to look up the service and pod names from within the cluster:
kubectl run test-nslookup --image=busybox:1.28 --rm -it --restart=Never -- nslookup nginx-resolver-service
kubectl run test-nslookup --image=busybox:1.28 --rm -it --restart=Never -- nslookup nginx-resolver-service > /root/CKA/nginx.svc
Get the IP of the nginx-resolver pod and replace the dots(.) with hyphon(-) which will be used below.
kubectl get pod nginx-resolver -o wide
kubectl run test-nslookup --image=busybox:1.28 --rm -it --restart=Never -- nslookup <P-O-D-I-P.default.pod> > /root/CKA/nginx.pod
mock3
6)
Taint the worker node node01 to be Unschedulable. Once done, create a pod called dev-redis, image redis:alpine, to ensure workloads are not scheduled to this worker node. Finally, create a new pod called prod-redis and image: redis:alpine with toleration to be scheduled on node01.
key: env_type, value: production, operator: Equal and effect: NoSchedule
6) 답
kubectl taint node node01 env_type=production:NoSchedule
