Merge pull request #3235 from mirwan/docker_version_emphasis

Emphasis on docker recommended version
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Antoine Legrand 2018-09-04 17:11:29 +02:00 committed by GitHub
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@ -107,7 +107,7 @@ Supported Components
- [coredns](https://github.com/coredns/coredns) v1.2.2 - [coredns](https://github.com/coredns/coredns) v1.2.2
- [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v0.19.0 - [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v0.19.0
Note: kubernetes doesn't support newer docker versions. Among other things kubelet currently breaks on docker's non-standard version numbering (it no longer uses semantic versioning). To ensure auto-updates don't break your cluster look into e.g. yum versionlock plugin or apt pin). Note: kubernetes doesn't support newer docker versions ("Version 17.03 is recommended... Versions 17.06+ might work, but have not yet been tested and verified by the Kubernetes node team" cf. [Bootstrapping Clusters with kubeadm](https://kubernetes.io/docs/setup/independent/install-kubeadm/#installing-docker)). Among other things kubelet currently breaks on docker's non-standard version numbering (it no longer uses semantic versioning). To ensure auto-updates don't break your cluster look into e.g. yum versionlock plugin or apt pin).
Note 2: rkt support as docker alternative is limited to control plane (etcd and Note 2: rkt support as docker alternative is limited to control plane (etcd and
kubelet). Docker is still used for Kubernetes cluster workloads and network kubelet). Docker is still used for Kubernetes cluster workloads and network