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Jethro
Asked: 2021-12-15 10:58:25 +0800 CST

How do you login to docker hub when using containerd?

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With docker I would run docker login, but how do you do similar with ctr/containerd?

We need to login due to hitting rate limits:

ctr: failed to copy: httpReaderSeeker: failed open: unexpected status code https://registry-1.docker.io/v2/library/[...]: 429 Too Many Requests - Server message: toomanyrequests: You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limit

Following the containerd docs with /etc/containerd/config.toml:

version = 2
[plugins."io.containerd.grpc.v1.cri".registry.configs."docker.io".auth]
  username = "myusername"
  password = "mypassword"

doesn't seem to work.

docker containerd

1 Answers

  1. Best Answer

    Yeah, me too and I don't understand why. So, I edited my config like as guide: https://docs.d2iq.com/dkp/kommander/1.4/operations/manage-docker-hub-rate-limits/

    Like as you can see, original code in document

    [plugins."io.containerd.grpc.v1.cri".registry.configs."docker.io".auth]

    If change to this (full domain), it works

    [plugins."io.containerd.grpc.v1.cri".registry.configs."registry-1.docker.io".auth]

    Restart containerd and check.

    Testing, write bash script

    TOKEN=$(curl --user 'YOUR_LOGIN_USER:YOUR_LOGIN_PASSWORD' "https://auth.docker.io/token?service=registry.docker.io&scope=repository:ratelimitpreview/test:pull" | jq -r .token)
curl --head -H "Authorization: Bearer $TOKEN" https://registry-1.docker.io/v2/ratelimitpreview/test/manifests/latest | grep -i rate

    My result, avaiable 198/200

    ratelimit-limit: 200;w=21600
ratelimit-remaining: 198;w=21600
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