Exam CKA Topic 1 Question 25 Discussion

Actual exam question for Linux Foundation's CKA exam
Question #: 25
Topic #: 1

Create a Pod with main container busybox and which executes this
"while true; do echo 'Hi I am from Main container' >>
/var/log/index.html; sleep 5; done" and with sidecar container
with nginx image which exposes on port 80. Use emptyDir Volume
and mount this volume on path /var/log for busybox and on path
/usr/share/nginx/html for nginx container. Verify both containers
are running.

A. // create an initial yaml file with this
kubectl run multi-cont-pod --image=busbox --restart=Never --
dry-run -o yaml > multi-container.yaml
// edit the yml as below and create it
kubectl create -f multi-container.yaml
vim multi-container.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
run: multi-cont-pod
name: multi-cont-pod
spec:
volumes:
- image: busybox
command: ["/bin/sh"]
args: ["-c", "while true; do echo 'Hi I am from Main
container' >> /var/log/index.html; sleep 5;done"]
name: main-container
volumeMounts:
- name: var-logs
mountPath: /var/log
- image: nginx
name: sidecar-container
ports:
mountPath: /usr/share/nginx/html
restartPolicy: Never
// Create Pod
kubectl apply -f multi-container.yaml
//Verify
kubectl get pods B. // create an initial yaml file with this
kubectl run multi-cont-pod --image=busbox --restart=Never --
dry-run -o yaml > multi-container.yaml
// edit the yml as below and create it
kubectl create -f multi-container.yaml
vim multi-container.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
run: multi-cont-pod
name: multi-cont-pod
spec:
volumes:
- name: var-logs
emptyDir: {}
containers:
- image: busybox
command: ["/bin/sh"]
args: ["-c", "while true; do echo 'Hi I am from Main
container' >> /var/log/index.html; sleep 5;done"]
name: main-container
volumeMounts:
- name: var-logs
mountPath: /var/log
- image: nginx
name: sidecar-container
ports:
- containerPort: 80
volumeMounts:
- name: var-logs
mountPath: /usr/share/nginx/html
restartPolicy: Never
// Create Pod
kubectl apply -f multi-container.yaml
//Verify
kubectl get pods

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