gt docker Cannot overwrite digest rancher-users #rancher-desktop

Title

quick-keyboard-83126

12/14/2022, 11:25 PM

docker: Cannot overwrite digest ...

How do I get rancher to let me run the amd64 instead of arm64 image?

fast-garage-66093

12/15/2022, 2:28 AM

Specify

--platform linux/amd64

in your docker/nerdctl run command

If you are talking about k8s, then you can't.

kubelet

will only run images of the same architecture as itself. I have some ideas on running a second k8s node with a different architecture in a container, but not sure if/when we would get around to looking at this idea. Probably not until after adding support for Virtualization Framework and Rosetta2, which should become an options in the next quarter.

quick-keyboard-83126

12/15/2022, 2:33 AM

I'm not using k8s. This is just docker run. I did a docker pull and now it's poisoned with the arm image. Even though had I not, I'd be able to use docker run --platform linux/amd64.

fast-garage-66093

12/15/2022, 2:39 AM

It seems to work for me; is this not what you want:

$ uname -a
Darwin studio 22.2.0 Darwin Kernel Version 22.2.0: Fri Nov 11 02:03:51 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T6000 arm64

$ docker run --platform linux/arm64 busybox uname -a
Unable to find image 'busybox:latest' locally
latest: Pulling from library/busybox
b2bcf7a3443b: Pull complete
Digest: sha256:3b3128d9df6bbbcc92e2358e596c9fbd722a437a62bafbc51607970e9e3b8869
Status: Downloaded newer image for busybox:latest
Linux c3763bbf1eb5 5.15.78-0-virt #1-Alpine SMP Fri, 11 Nov 2022 10:19:45 +0000 aarch64 GNU/Linux

$ docker run --platform linux/amd64 busybox uname -a
Unable to find image 'busybox:latest' locally
latest: Pulling from library/busybox
45a0cdc5c8d3: Pull complete
Digest: sha256:3b3128d9df6bbbcc92e2358e596c9fbd722a437a62bafbc51607970e9e3b8869
Status: Downloaded newer image for busybox:latest
Linux cb52a5429efe 5.15.78-0-virt #1-Alpine SMP Fri, 11 Nov 2022 10:19:45 +0000 x86_64 GNU/Linux

quick-keyboard-83126

12/15/2022, 2:39 AM

I'm not by the computer atm...

fast-garage-66093

12/15/2022, 2:40 AM

It is possible that the

amd64

image simply doesn't run with

qemu-static-x86_64

emulation, but if it does, then this is the way to request them

quick-keyboard-83126

12/15/2022, 2:41 AM

I can definitely run amd64 and arm64

It has something to do w/ gcr's

@sha

notation confusing docker `it has something to do with gcr and having two images for the same

If i reset rancher from scratch i can switch which image i can use

and then i'm stuck w/ it until reset rancher again...

fast-garage-66093

12/16/2022, 12:37 AM

If there is a public image that can be used to repro this, then please file a bug.

quick-keyboard-83126

12/19/2022, 3:33 PM

Sadly, the image is something we made for my employer, but i suspect it's related to gcr, so i probably should be able to construct a thing for it

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