解决方案：
# vim /etc/docker/daemon.json
把native.cgroupdriver=systemd 修改成 native.cgroupdriver=cgroupfs
"exec-opts": ["native.cgroupdriver=cgroupfs"],
然后
systemctl daemon-reload
systemctl restart kubelet
systemctl status kubelet
journalctl -xeu kubelet查看具体异常原因
如果还不行就
vim /usr/lib/systemd/system/kubelet.service.d/10-kubeadm.conf
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --cgroup-driver=systemd"
然后
systemctl daemon-reload
systemctl restart kubelet
systemctl status kubelet