Which answer is correct for the Kubernetes scenario

Kubernetes
,
#1

Task

Create a pod with the following characteristics, and leave it running when complete:

  • The pod must run in the frontend namespace. Check if the namespace has already been created and create if necessary
  • The name of the pod should be cache
  • Use the library/redis image with the 3.2 tag
  • Expose port 6379

kubectl create ns frontend

Answer1:

kubectl run cache --image=library/redis:3.2 --port 6379 -n frontend

Answer2:

kubectl -n frontend run cache --image=library/redis:3.2 --port 6379 --expose

#2

What’s the difference between the two commands? You get your answer from that.

#3

As the question says “expose”. In my opinion the command with “–expose” should be the right answer.

#4

If the problem didn’t ask you to create a service, then the flag would not be appropriate. I’d guess that’s the reason.

1 Like
#5

image
image729Ă—155 5.14 KB

snapshot from kubernetes-nework-policy-recipes.
It doesn’t say to create a service.

#6

Is there some differene between.
expose it at [port] vs expose [port] ???

#7

–expose creates a service of the same name as the pod. --port sets what port is used by the pod, which the service created via --expose uses that as its port value as well.