k8s集群node节点加入失败

出现这种情况：

$preflight$ FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'

$kubelet-start$ Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"

$kubelet-start$ Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"

$kubelet-start$ Starting the kubelet

$kubelet-start$ Waiting for the kubelet to perform the TLS Bootstrap...

$kubelet-check$ Initial timeout of 40s passed.

error execution phase kubelet-start: error uploading crisocket: Unauthorized

To see the stack trace of this error execute with --v=5 or higher

这是因为我最初初始化主节点的时候加入了该节点，然后kubeadm reset了，，需要初始化一下node节点才能成功，具体执行操作如下：

kubelet reset一下，然后发现node节点还是notready，journalctl -f -u kubelet命令查看，出现如下：

$failed to find plugin \\"flannel\\" in path \[/opt/cni/bin$ ]"

6月 27 22:01:42 nodeOne kubelet $7665$ : I0627 22:01:42.792331 7665 cni.go:240] "Unable to update cni config" err="no valid networks found in /etc/cni/net.d"

6月 27 22:01:42 nodeOne kubelet $7665$ : E0627 22:01:42.803879 7665 kubelet.go:2347] "Container runtime network not ready" networkReady="NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized"

6月 27 22:01:47 nodeOne kubelet $7665$ : I0627 22:01:47.797916 7665 cni.go:205] "Error validating CNI config list" configList="{\n \"name\": \"cbr0\",\n \"cniVersion\": \"0.3.1\",\n \"plugins\": $\\n {\\n \\"type\\": \\"flannel\\",\\n \\"delegate\\": {\\n \\"hairpinMode\\": true,\\n \\"isDefaultGateway\\": true\\n }\\n },\\n {\\n \\"type\\": \\"portmap\\",\\n \\"capabilities\\": {\\n \\"portMappings\\": true\\n }\\n }\\n$ \n}\n" err=" $failed to find plugin \\"flannel\\" in path \[/opt/cni/bin$ ]"

6月 27 22:01:47 nodeOne kubelet $7665$ : I0627 22:01:47.797937 7665 cni.go:240] "Unable to update cni config" err="no valid networks found in /etc/cni/net.d"

6月 27 22:01:47 nodeOne kubelet $7665$ : E0627 22:01:47.809606 7665 kubelet.go:2347] "Container runtime network not ready" networkReady="NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized",和主节点一样问题，未安装cni网络插件，下载，然后到/opt/cni/bin目录下解压，然后在网上下载一个flannel插件就可以的