我只是按照说明使用 brew 在我的 Mac 上安装 Minikube：
https://github.com/kubernetes/minikube
brew cask install minikube
然后我只是按照说明进行测试：
minikube start
给了我以下内容：
MacBook-Pro:~ joe$ minikube start
Starting local Kubernetes v1.6.4 cluster...
Starting VM...
Moving files into cluster...
Setting up certs...
Starting cluster components...
Connecting to cluster...
Setting up kubeconfig...
Kubectl is now configured to use the cluster
然后我尝试要求 kubectl 版本为：
MacBook-Pro:~ joe$ kubectl version
Client Version: version.Info{Major:"1", Minor:"4", GitVersion:"v1.4.5", GitCommit:"5a0a696437ad35c133c0c8493f7e9d22b0f9b81b", GitTreeState:"clean", BuildDate:"2016-10-29T01:38:40Z", GoVersion:"go1.7.1", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"6", GitVersion:"v1.6.4", GitCommit:"d6f433224538d4f9ca2f7ae19b252e6fcb66a3ae", GitTreeState:"dirty", BuildDate:"2017-06-22T04:31:09Z", GoVersion:"go1.7.5", Compiler:"gc", Platform:"linux/amd64"}
然后我尝试了下面通常的 hello world 示例，这导致了错误（也如下所示）：
MacBook-Pro:~ joe$ kubectl run hello-minikube --image=gcr.io/google_containers/echoserver:1.4 --port=8080
error: group map[extensions:0xc4204c6000 policy:0xc4204c6070 rbac.authorization.k8s.io:0xc4200ea070 storage.k8s.io:0xc4200ea150 federation:0xc4203ba0e0 apps:0xc4203ba620 authentication.k8s.io:0xc4203ba690 batch:0xc4203baa10 certificates.k8s.io:0xc4203baa80 componentconfig:0xc4203baaf0 :0xc4203ba5b0 authorization.k8s.io:0xc4203ba7e0 autoscaling:0xc4203ba850] is already registered
我找不到任何合适的答案。我想我的 kubectl 客户端应该更新了。但是如何在我的 Mac 上执行此操作？我猜它都是使用 brew 安装的。那么有什么想法可以解决这个问题吗？
编辑：尝试了Sebastien Goasguen的帖子
我得到的是她的：
MacBook-Pro:~ joe$ brew upgrade kubectl
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 2 taps (caskroom/cask, homebrew/core).
==> Updated Formulae
bacula-fd etcd fio gx-go kibana metricbeat packetbeat subversion webpack
certbot exa gnumeric heroku libuv mikutter paket tippecanoe you-get
dos2unix exploitdb goffice hugo llnode neovim pyenv vagrant-completion
elasticsearch filebeat gx irssi logstash numpy remarshal vim
Error: kubectl 1.7.0 already installed
MacBook-Pro:~ joe$ kubectl config use-context minikube
switched to context "minikube".
MacBook-Pro:~ joe$ kubectl run hello-minikube --image=gcr.io/google_containers/echoserver:1.4 --port=8080
Unable to connect to the server: dial tcp 192.168.99.101:8443: i/o timeout
MacBook-Pro:~ joe$ minikube delete
Deleting local Kubernetes cluster...
Machine deleted.
MacBook-Pro:~ joe$