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content/en/docs/reference/setup-tools/kubeadm/implementation-details.md

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 - luxas
 - jbeda
 title: Implementation details
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 {{< feature-state for_k8s_version="v1.10" state="stable" >}}
 
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 However, it might not be obvious _how_ kubeadm does that.
 
 This document provides additional details on what happen under the hood, with the aim of sharing knowledge on Kubernetes cluster best practices.
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 ## Core design principles
 
 The cluster that `kubeadm init` and `kubeadm join` set up should be:
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 1. To make dynamic kubelet configuration work, flag `--dynamic-config-dir=/var/lib/kubelet/config/dynamic` should be specified in `/etc/systemd/system/kubelet.service.d/10-kubeadm.conf`
 
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