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Kubernetes relies on containerd which works with docker, rkt or anything that works with containerd. The prefered alternative to docker is rkt.

• sascha_sl 8y ago
  No they don't. Containerd is the code Moby and Docker are built from, developed at Docker Inc. Kubernetes will take anything that implements CRI. https://cri-o.io/ https://cri-o.io/ https://kubernetes.io/docs/setup/cri/ https://kubernetes.io/docs/setup/cri/
  • 1337shadow 8y ago
    All right ! Thanks for the heads up, deeply appreciated. However, I still stand with rkt rather than docker...
    • sascha_sl 8y ago
      It can be quite complicated if you use a docker version without containerd's CRI. And you do if you follow the version recommendations (because docker has a lot of regressions). GKE does it, so we do it. Kubelet actually has a translation layer baked into it that it starts in-process when detecting docker, which provides the gRPC CRI interface on a real filesystem socket. https://github.com/kubernetes/kubernetes/tree/master/pkg/kubelet/dockershim https://github.com/kubernetes/kubernetes/tree/master/pkg/kub...