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Docker DCA Exam - Topic 4 Question 73 Discussion

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.
A) Yes
B) No

Docker DCA Exam - Topic 4 Question 73 Discussion

Actual exam question for Docker's DCA exam
Question #: 73
Topic #: 4
[All DCA Questions]

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.

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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


by Lucy at Aug 05, 2023, 11:02 AM

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Vivan
8 months ago
Yes, but local storage can work for testing!
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Annette
8 months ago
I thought Persistent VolumeClaims needed a specific storage class.
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Malissa
8 months ago
Wait, isn't hostPath risky for production?
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Ellen
8 months ago
Totally agree, that's the way to go.
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Cory
9 months ago
You can use hostPath for that!
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Yesenia
9 months ago
I thought Persistent VolumeClaims were more about cloud storage options, so I'm a bit confused about using them with local paths.
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Viola
9 months ago
I feel like this approach might not be the best for production, but for development, it could be okay.
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Verdell
9 months 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.
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Delila
9 months 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.
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Goldie
9 months 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.
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Blythe
9 months 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.
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Julene
10 months 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.
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Tracie
10 months 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.
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