Discuss LPI 305-300 Exam Topic 1 Question 45

How does Packer interact with system images?

APacker has to be installed within the target image and is executed during the image's first boot in order to execute preparation tasks.

BPacker installs a client within the image which has to be run periodically via cron in order to retrieve the latest template from the Packer server and apply it locally.

CPacker periodically connects through the network to the Packer daemons of all running Packer images in order to re-apply the whole template to the running instance.

DPacker downloads and extracts an image in order to make changes to the image's file system, repack the modified image and upload it again.

EPacker creates an instance based on a source image, prepares the instance through a network connection and bundles the resulting instance as a new system image.

Suggested Answer: E

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30 comments · newest first

Ozell 6 months ago

C is confusing. Packer doesn’t re-apply templates like that.

Rueben 6 months ago

B sounds complicated. I don’t see why Packer would need a client in the image.

Marcelle 6 months ago

I agree with E. The network connection part is key for preparation.

Salina 6 months ago

A seems off. Packer doesn’t need to be in the image itself.

Mammie 7 months ago

I feel like D makes sense too, but it’s more about modifying than creating.

Art 7 months ago

I thought Packer just modified images directly, not through instances.

Gerald 7 months ago

Wait, does Packer really need to be installed in the image?

Frank 8 months ago

I don't think A is right, sounds off.

Linwood 8 months ago

Totally agree with E! That's how it works.

Gerald 8 months ago

Packer? More like Cracker, am I right? *winks*

Hui 8 months ago

D) Packer downloads and extracts an image in order to make changes to the image's file system, repack the modified image and upload it again.

Bonita 8 months ago

This question is a real head-scratcher. I'm going to need a coffee break before I can even attempt to answer this.

Marisha 8 months ago

E) Packer creates an instance based on a source image, prepares the instance through a network connection and bundles the resulting instance as a new system image.

Haydee 9 months ago

D) Packer downloads and extracts an image in order to make changes to the image's file system, repack the modified image and upload it again.

Brett 9 months ago

I practiced a similar question where Packer was described as modifying images, but I can't remember if it was about downloading and extracting or just creating new instances.

Delmy 9 months ago

I feel like I might be mixing up the options, but I vaguely recall that Packer doesn't need to be installed in the target image itself.

Hillary 9 months ago

I think option E sounds right because it mentions preparing the instance through a network connection, which is something I practiced in the labs.

Lamonica 9 months ago

I remember studying that Packer creates an instance from a source image, but I'm not sure if it bundles it as a new system image or just modifies it.

Ora 9 months ago

I'm leaning towards B, where Packer installs a client within the image that periodically retrieves updates from the Packer server. That would make sense for keeping images up-to-date, but I'm not 100% sure if that's how Packer actually works.

Mohammad 10 months ago

Packer creates an instance from a source image.

Abel 10 months ago

I'm pretty confident that E is the correct answer. Packer creates a new image by provisioning an instance from a source image and then bundling that instance into a new image. The network connection is key for Packer to interact with the instance during the preparation process.

Fabiola 10 months ago

I think E is the best answer. It describes how Packer works with images.

Vernell 10 months ago

Option D sounds right to me. Packer downloads the image, makes changes to the file system, and then repacks the modified image. That seems to fit with how I understand Packer works.

Nilsa 11 months ago

I'm a bit confused on this one. I know Packer is used to create images, but I'm not sure if it actually connects to the running instances or just modifies the image files directly. I'll have to think this through a bit more.

Kerry 11 months ago

I think option E is the way to go here. Packer creates a new image based on a source image, and it does this by connecting to the instance over the network to prepare it.

Zona 5 months ago

↳ replying to Kerry

Option E really streamlines the process!

Lai 5 months ago

↳ replying to Kerry

Definitely the best approach for automation.

Doyle 6 months ago

↳ replying to Kerry

I like how it bundles everything into a new system image.

Markus 6 months ago

↳ replying to Kerry

Yeah, it’s efficient to create a new image that way.

Emerson 10 months ago

↳ replying to Kerry

I agree, option E makes the most sense. Network connection is key.

LPI 305-300 Exam - Topic 1 Question 45 Discussion