启动命令行如下：
/usr/bin/kubelet \
  --address=10.12.51.171 \
  --hostname-override=10.12.51.171 \
  --pod-infra-container-image=harbor.local.com/images/pause-amd64:3.0 \
  --experimental-bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig \
  --kubeconfig=/etc/kubernetes/kubelet.kubeconfig \
  --cert-dir=/etc/kubernetes/ssl \
  --network-plugin=cni \
  --cni-conf-dir=/etc/cni/net.d \
  --cni-bin-dir=/usr/bin \
  --cluster-dns=10.254.0.2 \
  --cluster-domain=zqdlk8s.local. \
  --hairpin-mode hairpin-veth \
  --allow-privileged=true \
  --fail-swap-on=false \
  --logtostderr=true \
  --log-dir=/var/log/kubernetes/kubelet \
  --v=4 \
  --eviction-hard=memory.available<1024Mi,nodefs.available<10%,nodefs.inodesFree<5 \
  --system-reserved cpu=0.5,memory=1G
 

Kubelet启动参数详解

https://blog.csdn.net/zhonglinzhang/article/details/85279788