Kubernetes Certified Application Developer - Questions with Verified Answers

Kubernetes Certified Application Developer -
Questions with Verified Answers
What does CKAD stand for?

Certified Kubernetes Application Developer

Create an nginx pod from cli

k run nginx --image=nginx

Create a redis pod yaml file from cli

k run redis --image=redis --dry-run=client -o yaml > pod.yaml

Docker start image?

Docker run imagename

Docker list running containers?

Docker ps

Docker list running and stopped containers?

Docker ps -a

What are 3 ways to add environment variables?

Plain key value, ConfigMap and Secrets

To get an env var from a configMap?

env:
- name: APP_COLOR
valueFrom:
configMapKeyRef:

To get an env var from a secrets?

, env:
- name: APP_COLOR
valueFrom:
secretKeyRef:

What are configMaps used for?

To pass configuration data via key value pairs

Create a configMap from the command line?

k create configMap name --from-literal=APP_COLOR=blue

4 main fields of a configMap

apiVersion
kind
metadata
data

Add configMap to file?

container:
envFrom:
- configMapRef:
name: app-config

Create definition file from a running pod?

kubectl get pod pod-name -o yaml > pod.yaml

kubectl abbreviation for configmap?

cm

Get help on using envFrom from command line?

k explain pods --recursive | grep envFrom