Free Certified Kubernetes Administrator Exam CKA Exam Practice Test

Get IP address of the pod -- ''nginx-dev''

• A . Explanation:
  Kubect1 get po -o wide
  Using JsonPath
  kubect1 get pods -o=jsonpath='{range
  .items[*]}{.metadata.name}{'\t'}{.status.podIP}{'\n'}{end}'
  

List pod logs named ''frontend'' and search for the pattern ''started'' and write it to a file ''/opt/error-logs''

• A . Explanation:
  Kubectl logs frontend | grep -i ''started'' > /opt/error-logs
  

Get list of all the pods showing name and namespace with a jsonpath expression.

• A . Explanation:
  kubectl get pods -o=jsonpath='{.items[*]['metadata.name'
  , 'metadata.namespace']}'
  

Create a pod that having 3 containers in it? (Multi-Container)

• A . Explanation:
  image=nginx, image=redis, image=consul
  Name nginx container as ''nginx-container''
  Name redis container as ''redis-container''
  Name consul container as ''consul-container''
  Create a pod manifest file for a container and append container
  section for rest of the images
  kubectl run multi-container --generator=run-pod/v1 --image=nginx --
  dry-run -o yaml > multi-container.yaml
  # then
  vim multi-container.yaml
  apiVersion: v1
  kind: Pod
  metadata:
  labels:
  run: multi-container
  name: multi-container
  spec:
  containers:
  - image: nginx
  name: nginx-container
  - image: redis
  name: redis-container
  - image: consul
  name: consul-container
  restartPolicy: Always
  

List all the pods sorted by name

• A . Explanation:
  kubectl get pods --sort-by=.metadata.name
  

Create a busybox pod that runs the command ''env'' and save the output to ''envpod'' file

• A . Explanation:
  kubectl run busybox --image=busybox --restart=Never ---rm -it -- env > envpod.yaml
  

Create 2 nginx image pods in which one of them is labelled with env=prod and another one labelled with env=dev and verify the same.

• A . Explanation:
  kubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml > nginx-prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like ''creationTimestamp: null'' ''dnsPolicy: ClusterFirst''
  vim nginx-prod-pod.yaml
  apiVersion: v1
  kind: Pod
  metadata:
  labels:
  env: prod
  name: nginx-prod
  spec:
  containers:
  - image: nginx
  name: nginx-prod
  restartPolicy: Always
  # kubectl create -f nginx-prod-pod.yaml
  kubectl run --generator=run-pod/v1 --image=nginx --
  labels=env=dev nginx-dev --dry-run -o yaml > nginx-dev-pod.yaml
  apiVersion: v1
  kind: Pod
  metadata:
  labels:
  env: dev
  name: nginx-dev
  spec:
  containers:
  - image: nginx
  name: nginx-dev
  restartPolicy: Always
  # kubectl create -f nginx-prod-dev.yaml
  Verify :
  kubectl get po --show-labels
  kubectl get po -l env=prod
  kubectl get po -l env=dev
  

Create a namespace called 'development' and a pod with image nginx called nginx on this namespace.

• A . Explanation:
  kubectl create namespace development
  kubectl run nginx --image=nginx --restart=Never -n development
  

Print pod name and start time to ''/opt/pod-status'' file

• A . Explanation:
  kubect1 get pods -o=jsonpath='{range
  .items[*]}{.metadata.name}{'\t'}{.status.podIP}{'\n'}{end}'
  

List the nginx pod with custom columns POD_NAME and POD_STATUS

• A . Explanation:
  kubectl get po -o=custom-columns='POD_NAME:.metadata.name,
  POD_STATUS:.status.containerStatuses[].state'