Question 248853 in Amazon Web Sevices Question posted in
The official Amazon Web Services documentation can be found here.

Amazon web services – How do I log into ECR to pull images if I can't use docker as a runtime?

One of the steps to log into ECR required to pull and push images is the following, according to AWS (https://docs.aws.amazon.com/AmazonECR/latest/userguide/getting-started-cli.html):

aws ecr get-login-password --region region | docker login --username AWS --password-stdin aws_account_id.dkr.ecr.region.amazonaws.com

However, from starting from Kubernetes v1.24, Docker can no longer be used as a runtime.
In this case, if someone is using:

  1. ctr

  2. crictl

  3. nerdctl

What does the login command become?
I have looked everyone but could not construct it. AWS doesn’t have documentation for it.

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2

Answers


  1. 0

    You do not have to change anything. Just keep your workflow with docker login with AWS ECR as usual.

    The reason is Kubernetes still supports Docker-produces images. It only deprecates Docker runtime in favor of runtimes that use the Container Runtime Interface (CRI) created for Kubernetes. For more information, please take a look at Don’t Panic: Kubernetes and Docker

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  2. 0

    What exactly are you trying to achieve?
    If you are looking for a tool to build images inside K8s and push them to ECR, you can use buildah and auth to ECR by the command:

    aws ecr get-login-password --region ${AWS_DEFAULT_REGION} | buildah login --username AWS --password-stdin ${REPO_URI}

    If you need provide K8s access to pull images from your ECR it’s another case and you can find documentation here

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