image - 使用kubeadm(kubernetes)时，google-containers和google_containers有什么区别

Question

目前，我正在使用kubeadm 1.7.2安装kubernetes。

它将下载gcr.io/google_containers/etc-amd64:3.0.17之类的图像。
但是在gcr.io中，我只看到google-containers。

所以gcr.io.google_containers是相同的gcr.io.google-containers吗？

如果它们相同，为什么当我将它们标记为google-containers而不是google-containers时，kubeadm会下载google_containers / xxx？

Answer 1

So gcr.io.google_containers is the same gcr.io.google-containers

自2015年以来，是的:请参见 kubernetes issue 6229

It turns out that that is because I am using an older version of docker which does not allow "-" in namespaces.
I get Invalid namespace name (google-containers), only [a-z0-9_] are allowed, size between 4 and 30 error on running $docker pull gcr.io/google-containers/heapster.

@thockin suggested that we can change the path to use google_containers instead of google-containers since that works for all versions of docker.