K8S单节点部署报错：Error from server (AlreadyExists): clusterrolebindings.rbac.authorization.k8s.io “kubelet

问题描述

创建bootstrap角色赋予权限用于连接apiserver请求签名时报错，修改如下所示：

[root@localhost kubeconfig]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
Error from server (AlreadyExists): clusterrolebindings.rbac.authorization.k8s.io “kubelet-bootstrap” already exists

问题分析

这是因为之前已经创建过错误的签名，签名被占用，需要删除已经被占用的签名

问题解决

1、删除签名

kubectl delete clusterrolebindings kubelet-bootstrap

2、重新创建成功

[root@localhost kubeconfig]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
clusterrolebinding.rbac.authorization.k8s.io/kubelet-bootstrap created