question: crane: How to pull images of two architectures at the same time，like crane pull alipline:latest alipline.tar.gz --platform linux/amd64,linux/arm64

[bryant-rh]

How to pull images of two architectures at the same time，like :
crane pull alipline:latest alipline.tar.gz --platform linux/amd64,linux/arm64

[imjasonh]

The default output format is only suitable to store one image's worth of layer information. If you specify --format=oci (since #1208) it will fetch all platforms of the image, and you can inspect the results to find only the platforms you want.

This is an incomplete answer, I realize, since it requires more work to explore the produced OCI layout, and isn't as easy as --platform=A,B. We haven't really had any requests for this behavior before. Can you share a bit about what you're trying to achieve?

[bryant-rh]

thank you very much for your reply， --format=oci is enough for me。
I just want to package the image specifying multiple arch

[bryant-rh]

The default output format is only suitable to store one image's worth of layer information. If you specify --format=oci (since #1208) it will fetch all platforms of the image, and you can inspect the results to find only the platforms you want.

This is an incomplete answer, I realize, since it requires more work to explore the produced OCI layout, and isn't as easy as --platform=A,B. We haven't really had any requests for this behavior before. Can you share a bit about what you're trying to achieve?

But there is a new problem，How to import oci format image to machine through docker or ctr command。
and I tried to package the exported oci image and copied it to the k3s directory: ”rancher/k3s/agent/images/“, and the following error was prompted:
level=error msg="Error encountered while importing /data/rancher/k3s/agent/images/a.tar.gz: unrecognized image format"

[imjasonh]

I'm not very familiar with k3s, but I would assume it only supports loading one architecture (at least that's how it sounded in ko-build/ko#665), so maybe this would be resolved by only pulling and loading the one image?

[bryant-rh]

I'm not very familiar with k3s, but I would assume it only supports loading one architecture (at least that's how it sounded in google/ko#665), so maybe this would be resolved by only pulling and loading the one image?

it‘s great，thank you very much for your reply！