Linux Foundation CKA Quiz 10 Topic 2 Questions 46-50

Question: 1

Create a configmap called cfgvolume with values var1=val1,

var2=val2 and create an nginx pod with volume nginx-volume which

reads data from this configmap cfgvolume and put it on the path

/etc/cfg

A// first create a configmap cfgvolume
kubectl create cm cfgvolume --from-literal=var1=val1 --fromliteral=var2=val2
// verify the configmap
kubectl describe cm cfgvolume
// create the config map
kubectl create -f nginx-volume.yml
vim nginx-configmap-pod.yaml
apiVersion: v1
kind: Pod
- name: nginx-volume
configMap:
name: cfgvolume
containers:
- image: nginx
name: nginx
volumeMounts:
- name: nginx-volume
mountPath: /etc/cfg
restartPolicy: Always
k kubectl apply -f nginx-configmap-pod.yaml
/ // Verify
// exec into the pod
kubectl exec -it nginx -- /bin/sh
// check the path
cd /etc/cfg

B// first create a configmap cfgvolume
kubectl create cm cfgvolume --from-literal=var1=val1 --fromliteral=var2=val2
// verify the configmap
kubectl describe cm cfgvolume
// create the config map
kubectl create -f nginx-volume.yml
vim nginx-configmap-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
volumes:
- name: nginx-volume
configMap:
name: cfgvolume
containers:
- image: nginx
name: nginx
volumeMounts:
- name: nginx-volume
mountPath: /etc/cfg
restartPolicy: Always
k kubectl apply -f nginx-configmap-pod.yaml
/ // Verify
// exec into the pod
kubectl exec -it nginx -- /bin/sh
// check the path
cd /etc/cfg

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Question: 2

Create a secret mysecret with values user=myuser and password=mypassword

Akubectl create secret generic my-secret --fromliteral=username=user --from-literal=password=mypassword
// Verify
kubectl get secret --all-namespaces
kubectl get secret generic my-secret -o yaml

Bkubectl create secret generic my-secret --fromliteral=username=user --from-literal=password=mypassword
// Verify
kubectl get secret generic my-secret -o yaml

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Question: 3

Create an nginx pod which reads username as the environment variable

A// create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml > nginx.yml
// add env section below and create
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
env:
- name: USER_NAME
restartPolicy: Never
kubectl create -f nginx.yml
//Verify
kubectl exec -it nginx -- env

B// create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml > nginx.yml
// add env section below and create
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
env:
- name: USER_NAME
valueFrom:
secretKeyRef:
name: my-secret
key: username
restartPolicy: Never
kubectl create -f nginx.yml
//Verify
kubectl exec -it nginx -- env

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Question: 4

Create an nginx pod which loads the secret as environment variables

A// create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml > nginx.yml
// add env section below and create
vim nginx.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
envFrom:
- secretRef:
name: my-secret
restartPolicy: Never
kubectl apply -f nginx.yaml
//verify
kubectl exec -it nginx -- env

B// create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml > nginx.yml
// add env section below and create
vim nginx.yaml
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
envFrom:
- secretRef:
name: my-secret
restartPolicy: Never
kubectl apply -f nginx.yaml
//verify
kubectl exec -it nginx -- env

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Question: 5

List all service account and create a service account called ''admin''

Akubectl get sa
kubectl get sa --all-namespaces
kubectl create sa admin
//Verify
kubectl get sa admin -o yaml

Bkubectl get sa
kubectl get sa --all-namespaces
//Verify
kubectl get sa admin -o yaml

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Linux Foundation CKA Quiz:10 Topic:2 Questions:46-50