Minikube的下载和安装
Minikube是一个快速搭建单节点Kubenetes集群的工具，大家可以把它和docker Machine进行类比。
1. 安装Minikube可执行程序
MAC
brew cask install minikubLinux
curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/Windows
从 https://storage.googleapis.com/minikube/releases/latest/minikube-windows-amd64.exe 下载重命名成minikube.exe,然后把这个文件的所在目录添加到系统环境变量PATH里。
安装完以后，我们可以通过minikube version 查看系统版本
~ minikube version
minikube version: v0.25.0
~2.安装kubectl
参考https://kubernetes.io/docs/tasks/tools/install-kubectl/
Mac
$ curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/darwin/amd64/kubectl
$ chmod +x ./kubectl
$ sudo mv ./kubectl /usr/local/bin/kubectlLinux
$ curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
$ chmod +x ./kubectl
$ sudo mv ./kubectl /usr/local/bin/kubectlWindows
下载exe https://storage.googleapis.com/kubernetes-release/release/v1.9.0/bin/windows/amd64/kubectl.exe
然后添加到系统PATH环境变量里
安装完以后可以查看版本（我们会看到它有一个报错，因为连不上k8s api server，这个很正常，因为k8s节点还创建呢）
~ kubectl version
Client Version: version.Info{Major:"1", Minor:"9", GitVersion:"v1.9.3", GitCommit:"d2835416544f298c919e2ead3be3d0864b52323b", GitTreeState:"clean", BuildDate:"2018-02-07T12:22:21Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"darwin/amd64"}
The connection to the server localhost:8080 was refused - did you specify the right host or port?3.安装Virtualbox
因为minikube创建K8S虚机是通过Virtualbox来做的（当然还有其它driver，比如KVM，vmware这里就不介绍了）
https://www.virtualbox.org/wiki/Downloads 根据自己的操作系统下载安装
3. 运行minikube程序创建k8s
通过 minikube starat 去创建k8s环境。如下所示。速度根据个人网速而不同，因为需要下载东西。
~ minikube start
Starting local Kubernetes v1.9.0 cluster...
Starting VM...
Downloading Minikube ISO
142.22 MB / 142.22 MB [============================================] 100.00% 0s
Getting VM IP address...
Moving files into cluster...
Downloading localkube binary
162.41 MB / 162.41 MB [============================================] 100.00% 0s
0 B / 65 B [----------------------------------------------------------] 0.00%
65 B / 65 B [======================================================] 100.00% 0sSetting up certs...
Connecting to cluster...
Setting up kubeconfig...
Starting cluster components...
Kubectl is now configured to use the cluster.
Loading cached images from config file.执行结束以后呢，我们可以通过kubectl cluster-info 去连一下k8s api server.
~ kubectl cluster-info
Kubernetes master is running at https://192.168.99.100:8443
To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
~但是，但是，此时并不代表，整个k8s集群搭建好了，因为k8s里的服务还需要起，比如API server，scheduler，kubelet等等，他们都是以容器的方式在后台启动。
那怎么判断成功了呢？
我们可以通过minikube ssh进到虚机里，然后看看是否有一些container运行起来了
~ minikube ssh
_ _
_ _ ( ) ( )
___ ___ (_) ___ (_)| |/') _ _ | |_ __
/' _ ` _ `\| |/' _ `\| || , < ( ) ( )| '_`\ /'__`\
| ( ) ( ) || || ( ) || || |\`\ | (_) || |_) )( ___/
(_) (_) (_)(_)(_) (_)(_)(_) (_)`\___/'(_,__/'`\____)
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c1aec3464788 gcr.io/k8s-minikube/storage-provisioner "/storage-provisioner" 8 minutes ago Up 8 minutes k8s_storage-provisioner_storage-provisioner_kube-system_05db116c-236a-11e8-985b-08002709a6e3_0
f36a4455bc73 fed89e8b4248 "/sidecar --v=2 --..." 8 minutes ago Up 8 minutes k8s_sidecar_kube-dns-54cccfbdf8-c7k5b_kube-system_0649fdef-236a-11e8-985b-08002709a6e3_0
e49e279c5717 459944ce8cc4 "/dnsmasq-nanny -v..." 8 minutes ago Up 8 minutes k8s_dnsmasq_kube-dns-54cccfbdf8-c7k5b_kube-system_0649fdef-236a-11e8-985b-08002709a6e3_0
1ec9842ec31d 512cd7425a73 "/kube-dns --domai..." 8 minutes ago Up 8 minutes k8s_kubedns_kube-dns-54cccfbdf8-c7k5b_kube-system_0649fdef-236a-11e8-985b-08002709a6e3_0
805346db62f0 e94d2f21bc0c "/dashboard --inse..." 8 minutes ago Up 8 minutes k8s_kubernetes-dashboard_kubernetes-dashboard-77d8b98585-ghb5p_kube-system_0630dbdf-236a-11e8-985b-08002709a6e3_0
2c3edf77349e gcr.io/google_containers/pause-amd64:3.0 "/pause" 8 minutes ago Up 8 minutes k8s_POD_kube-dns-54cccfbdf8-c7k5b_kube-system_0649fdef-236a-11e8-985b-08002709a6e3_0
19313f1076da gcr.io/google_containers/pause-amd64:3.0 "/pause" 8 minutes ago Up 8 minutes k8s_POD_kubernetes-dashboard-77d8b98585-ghb5p_kube-system_0630dbdf-236a-11e8-985b-08002709a6e3_0
a340e072f095 gcr.io/google_containers/pause-amd64:3.0 "/pause" 8 minutes ago Up 8 minutes k8s_POD_storage-provisioner_kube-system_05db116c-236a-11e8-985b-08002709a6e3_0
dab3d03f880b d166ffa9201a "/opt/kube-addons.sh" 8 minutes ago Up 8 minutes k8s_kube-addon-manager_kube-addon-manager-minikube_kube-system_c4c3188325a93a2d7fb1714e1abf1259_0
75c8fe4570a1 gcr.io/google_containers/pause-amd64:3.0 "/pause" 8 minutes ago Up 8 minutes k8s_POD_kube-addon-manager-minikube_kube-system_c4c3188325a93a2d7fb1714e1abf1259_0然后退出来，在本地运行minikube dashboard 会在本地弹出浏览器，就是Kubernetes的dashboard，那基本上恭喜您，安装成功了。
~ minikube dashboard
Opening kubernetes dashboard in default browser...
~
