尝试解决方案：
/etc/kubernetes/manifests/etcd.yaml
–listen-client-urls=“https://0.0.0.0:2379"
–listen-peer-urls=“https://0.0.0.0:2380”

–apiserver-advertise-address=<public_ip>

日志
root@master:~# kubeadm init --image-repository registry.aliyuncs.com/google_containers --pod-network-cidr=10.244.0.0/16 --kubernetes-version=v1.21.6 --apiserver-advertise-address=101.XXX.XXX.XXX --node-name=master --ignore-preflight-errors=all
[init] Using Kubernetes version: v1.21.6
…
[etcd] Creating static Pod manifest for local etcd in “/etc/kubernetes/manifests”
[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory “/etc/kubernetes/manifests”. This can take up to 4m0s
[kubelet-check] Initial timeout of 40s passed.