k8s 集群出现问题："unable to load bootstrap kubeconfig"
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悬赏园豆：30
[已解决问题]
解决于 2022-02-01 14:24
在 kubernetes control plane 服务器上运行 kubeadm certs renew all 命令更新证书后，kubelet 无法正常启动，syslog 在报错信息如下：
"Failed to run kubelet" err="failed to run Kubelet: unable to load bootstrap kubeconfig: stat /etc/kubernetes/bootstrap-kubelet.conf: no such file or directory"
docker ps 命令的输出中无任何容器，请问如何解决这个问题？
最佳答案
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通过 Renew kubernetes pki after expired 的回答中的方法解决了
$ cd /etc/kubernetes/pki/
$ mv {apiserver.crt,apiserver-etcd-client.key,apiserver-kubelet-client.crt,front-proxy-ca.crt,front-proxy-client.crt,front-proxy-client.key,front-proxy-ca.key,apiserver-kubelet-client.key,apiserver.key,apiserver-etcd-client.crt} ~/
$ kubeadm init phase certs all
$ cd /etc/kubernetes/
$ mv {admin.conf,controller-manager.conf,kubelet.conf,scheduler.conf} ~/
$ kubeadm init phase kubeconfig all
$ reboot
$ cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
对于高可用集群，需要加上 control-plane-endpoint 参数
$ kubeadm init phase certs all --control-plane-endpoint "k8s-api:6443"
$ kubeadm init phase kubeconfig all --control-plane-endpoint "k8s-api:6443"
