Discuss Docker DCA Exam Topic 4 Question 73

During development of an application meant to be orchestrated by Kubemetes, you want to mount the /data directory on your laptop into a container.

Will this strategy successfully accomplish this?

Solution. Create a Persistent VolumeClaim requesting storageClass:'''' (which defaults to local storage) and hostPath and use this to populate a volume in a pod.

AYes

BNo

Suggested Answer: A

This strategy does successfully mount the /data directory on your laptop into a container. Creating a persistentVolumeClaim requesting storageClass:'''' (which defaults to local storage) and hostPath and using this to populate a volume in a pod is a valid way to mount a host directory into a container in Kubernetes. A persistentVolumeClaim is a request for storage by a user or an application. A persistentVolume is an abstraction that represents a piece of storage in the cluster. A storageClass is a type of storage with a specific provisioner and parameters. A hostPath volume allows you to mount a file or directory from the host node's filesystem into your pod. A local volume allows you to mount local storage devices such as disks or partitions into your pod. By creating a persistentVolumeClaim with storageClass:'''' and hostPath, you are requesting a piece of storage that is backed by a hostPath volume on the node where the pod is scheduled. By using this persistentVolumeClaim to populate a volume in a pod, you are mounting the host directory into the container in the pod. Reference: https://kubernetes.io/docs/concepts/storage/persistent-volumes/, https://kubernetes.io/docs/concepts/storage/storage-classes/, https://kubernetes.io/docs/concepts/storage/volumes/#hostpath, https://kubernetes.io/docs/concepts/storage/volumes/#local

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13 comments · newest first

Vivan 11 months ago

Yes, but local storage can work for testing!

Annette 11 months ago

I thought Persistent VolumeClaims needed a specific storage class.

Malissa 11 months ago

Wait, isn't hostPath risky for production?

Ellen 11 months ago

Totally agree, that's the way to go.

Cory 12 months ago

You can use hostPath for that!

Yesenia 12 months ago

I thought Persistent VolumeClaims were more about cloud storage options, so I'm a bit confused about using them with local paths.

Viola 12 months ago

I feel like this approach might not be the best for production, but for development, it could be okay.

Verdell 1 year ago

I remember practicing a similar question where we had to use hostPath, but I can't recall if it was specifically for local storage.

Delila 1 year ago

I think using a Persistent VolumeClaim with hostPath could work, but I'm not entirely sure if it will mount the local directory correctly.

Goldie 1 year ago

I'm a bit confused by the wording of the question. I'll need to re-read it a few times to make sure I understand what they're asking.

Blythe 1 year ago

Okay, let me see... Linear, Star, and Exponential are all Glow types with the Optical FX attribute, so the answer must be A. None.

Julene 1 year ago

I think it's related to early media handling. We discussed similar scenarios in class, and I believe option A could be the one blocking the PRACK.

Tracie 1 year ago

Okay, let me see if I can break this down step-by-step. I'll need to focus on decoupling the services and establishing a standardized contract for Service A.

Docker DCA Exam - Topic 4 Question 73 Discussion