[preflight] WARNING: docker version is greater than the most recently validated version. Docker version: 17.09.0-ce. Max validated version: 17.03
[preflight] WARNING: Connection to "https://10.10.103.25:6443" uses proxy "http://127.0.0.1:38251". If that is not intended, adjust your proxy settings
[preflight] Some fatal errors occurred:
/etc/kubernetes/manifests is not empty
running with swap on is not supported. Please disable swap
[preflight] If you know what you are doing, you can skip pre-flight checks with --skip-preflight-checks
直接init提示这个 ，然而我swapoff一直失败
先用 kubeadm reset 清理一下环境，另外建议用 apt-get install docker.io 安装 docker，这样安装出来的是 k8s 推荐的 docker 版本
/etc/kubernetes/manifests is not empty
这个是要 rm -rf /etc/kubernetes/manifests/*
manifests 是删了.
而swap怎么都关不掉，我也很无奈.
fstab注释了，重启