Kubeadm: 无法运行Kubelet：无法创建证书签名请求：未经授权

我有一个在OpenStack云提供商下运行的K8s集群。

使用kubeadm工具设置群集，

我正在尝试使用kubeadm join命令添加另一个工作程序节点，该命令显示一个肯定的响应，告知该节点已成功添加，但是我无法使用kubectl get nodes命令找到它。

我进行了调查，发现新的从属节点上的kubelet没有运行，显示cannot create certificate signing request: Unauthorized 。

-- The start-up result is done.
May 14 12:15:33 vm1 kubelet[17678]: W0514 12:15:33.715964   17678 cni.go:171] Unable to update cni config: No networks found in /etc/cni/net.d
May 14 12:15:33 vm1 kubelet[17678]: W0514 12:15:33.738398   17678 hostport_manager.go:68] The binary conntrack is not installed, this can cause failures in network connection cleanup.
May 14 12:15:33 vm1 kubelet[17678]: I0514 12:15:33.738669   17678 server.go:376] Version: v1.10.1
May 14 12:15:33 vm1 kubelet[17678]: I0514 12:15:33.738913   17678 feature_gate.go:226] feature gates: &{{} map[]}
May 14 12:15:33 vm1 kubelet[17678]: I0514 12:15:33.739222   17678 plugins.go:89] No cloud provider specified.
May 14 12:15:33 vm1 kubelet[17678]: F0514 12:15:33.784257   17678 server.go:233] failed to run Kubelet: cannot create certificate signing request: Unauthorized
May 14 12:15:33 vm1 systemd[1]: kubelet.service: Main process exited, code=exited, status=255/n/a
May 14 12:15:33 vm1 systemd[1]: kubelet.service: Unit entered failed state.
May 14 12:15:33 vm1 systemd[1]: kubelet.service: Failed with result 'exit-code'.

工作节点上的版本： kubeadm version kubeadm version: &version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.1", GitCommit:"d4ab47518836c750f9949b9e0d387f20fb92260b", GitTreeState:"clean", BuildDate:"2018-04-12T14:14:26Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"linux/amd64"}

主节点上的版本：

kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"10", 
GitVersion:"v1.10.1", 
GitCommit:"d4ab47518836c750f9949b9e0d387f20fb92260b", 
GitTreeState:"clean", BuildDate:"2018-04-12T14:14:26Z", 
GoVersion:"go1.9.3", Compiler:"gc", Platform:"linux/amd64"}

用于进行联接的命令：

• 获得令牌： kubeadm token list | awk '/The default bootstrap token/ { print $1; }'

• 获取哈希值： openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'

• 联接命令： kubeadm join --skip-preflight-checks --token {{token}} --discovery-token-ca-cert-hash sha256:{{hash}} master_ip:6443