异常信息：

[root@n1 kubernetes]# systemctl status kubelet -l
● kubelet.service - Kubernetes KubeletLoaded: loaded (/etc/systemd/system/kubelet.service; enabled; vendor preset: disabled)Active: active (running) since 二 2022-08-02 19:31:38 CST; 42s agoDocs: https://github.com/GoogleCloudPlatform/kubernetesMain PID: 80509 (kubelet)Tasks: 9Memory: 13.0MCGroup: /system.slice/kubelet.service└─80509 /usr/local/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/kubelet-bootstrap.kubeconfig --cert-dir=/etc/kubernetes/pki --kubecig=/etc/kubernetes/kubelet.kubeconfig --config=/etc/kubernetes/kubelet.config.json --network-plugin=cni --pod-infra-container-image=k8s.gcr.io/paused64:3.1 --allow-privileged=true --alsologtostderr=true --logtostderr=false --log-dir=/var/log/kubernetes --v=28月 02 19:32:01 n1 kubelet[80509]: I0802 19:32:01.240801   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:03 n1 kubelet[80509]: I0802 19:32:03.277292   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:05 n1 kubelet[80509]: I0802 19:32:05.531491   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:07 n1 kubelet[80509]: I0802 19:32:07.698197   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:09 n1 kubelet[80509]: I0802 19:32:09.946787   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:11 n1 kubelet[80509]: I0802 19:32:11.955601   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:14 n1 kubelet[80509]: I0802 19:32:14.092859   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:16 n1 kubelet[80509]: I0802 19:32:16.101928   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:18 n1 kubelet[80509]: I0802 19:32:18.293540   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:32:20 n1 kubelet[80509]: I0802 19:32:20.408899   80509 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
[root@n1 kubernetes]# journalctl -xef -u kubelet
-- Logs begin at 二 2022-08-02 17:43:29 CST. --
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.598616   80432 flags.go:33] FLAG: --version="false"
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.598635   80432 flags.go:33] FLAG: --vmodule=""
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.598645   80432 flags.go:33] FLAG: --volume-plugin-dir="/usr/libexec/kubernetes/kubelet-plugins/vol/exec/"
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.598656   80432 flags.go:33] FLAG: --volume-stats-agg-period="1m0s"
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.598737   80432 feature_gate.go:226] feature gates: &{map[]}
8月 02 19:28:22 n1 kubelet[80432]: Flag --allow-privileged has been deprecated, will be removed in a future version
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.602278   80432 feature_gate.go:226] feature gates: &{map[RotateKubeletClientCertificate:true RotatbeletServerCertificate:true]}
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.602390   80432 feature_gate.go:226] feature gates: &{map[RotateKubeletClientCertificate:true RotatbeletServerCertificate:true]}
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.639153   80432 mount_linux.go:171] Detected OS with systemd
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.639224   80432 server.go:417] Version: v1.14.0
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.639304   80432 feature_gate.go:226] feature gates: &{map[RotateKubeletClientCertificate:true RotatbeletServerCertificate:true]}
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.639400   80432 feature_gate.go:226] feature gates: &{map[RotateKubeletClientCertificate:true RotatbeletServerCertificate:true]}
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.639516   80432 plugins.go:103] No cloud provider specified.
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.639547   80432 server.go:533] No cloud provider specified: "" from the config file: ""
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.639593   80432 bootstrap.go:118] Using bootstrap kubeconfig to generate TLS client cert, key and kconfig file
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.645893   80432 bootstrap.go:149] No valid private key and/or certificate found, reusing existing pate key or creating a new one
8月 02 19:28:22 n1 kubelet[80432]: I0802 19:28:22.685746   80432 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:28:24 n1 kubelet[80432]: I0802 19:28:24.912832   80432 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:28:27 n1 kubelet[80432]: I0802 19:28:27.025950   80432 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:28:29 n1 kubelet[80432]: I0802 19:28:29.403173   80432 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:28:31 n1 kubelet[80432]: I0802 19:28:31.677202   80432 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:28:33 n1 kubelet[80432]: I0802 19:28:33.738455   80432 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials
8月 02 19:28:35 n1 kubelet[80432]: I0802 19:28:35.927611   80432 bootstrap.go:294] Failed to connect to apiserver: the server has asked for the clieto provide credentials

解决：

1.证书过期了导致链接不上。

2.可以看到 token 已经过期重新生成一下就可以了。


[root@m1 .kube]# kubeadm token list
TOKEN                     TTL         EXPIRES                     USAGES                   DESCRIPTION               EXTRA GROUPS
bwa8py.ghf5s0vfsxz1d7fx   <invalid>   2022-08-01T19:06:15+08:00   authentication,signing   kubelet-bootstrap-token   system:bootstrappers:worker

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Failed to connect to apiserver: the server has asked for the clieto provide credentials

异常信息：

解决：

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