Install Minikube**（centos7）

#### **Install Minikube**（centos7）

1. 安装前要求

1. 机器开启虚拟化VT-x or AMD-v。

- linux系统检查是否开启虚拟机化功能

```

egrep "(vmx|svm)" /proc/cpuinfo

```

2. 安装docker （参考前面blog）

```

systemctl status docker

# 如果安装docker启动遇到问题，请注意docker-ce版本

# yum install docker-ce-17.06.1.ce

```

3. 关闭虚拟内存

```

swapoff -a

# 或者注销/etc/fstab 相关行

```

2. 安装虚拟机管理器Hypervisor (虚拟机形式运行) ： virtbox

1. 下载安装VirtualBox

```

wget https://download.virtualbox.org/virtualbox/5.2.22/VirtualBox-5.2-5.2.22_126460_el7-1.x86_64.rpm

rpm -i VirtualBox-5.2-5.2.22_126460_el7-1.x86_64.rpm

# 提示缺少lib插件libSDL-1.2.so.0()(64bit)

# yum install SDL

```

2. 下载安装VirtualBox证书

```

wget https://www.virtualbox.org/download/oracle_vbox.asc

rpm --import oracle_vbox.as

```

3. 安装kubectl

```

curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/v1.11.3/bin/linux/amd64/kubectl && chmod +x ./kubectl

&& mv ./kubectl /usr/local/bin/kubectl

```

4. 安装minikube

```

curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.31.0/minikube-linux-amd64 && chmod +x minikube && sudo cp minikube /usr/local/bin/ && rm minikube

```

5. 启动minikube前准备

1. 下载相关镜像( 关键点，这些镜像都是需要下载到minikube虚拟机中，不是在物理机中，所以很多人还是选择了代理方式安装，或者是阿里云镜像，[Minikube - Kubernetes本地实验环境 ](https://yq.aliyun.com/articles/221687)).

其中，据我分析日志发现，下面是明确需要的镜像：

```

k8s.gcr.io/kube-apiserver-amd64:v1.11.3

k8s.gcr.io/kube-controller-manager-amd64:v1.11.3

k8s.gcr.io/kube-scheduler-amd64:v1.11.3

k8s.gcr.io/kube-proxy-amd64:v1.11.3

k8s.gcr.io/pause:3.1 etcd-amd64:3.2.18

k8s.gcr.io/coredns:1.1.3 kube-addon-manager:v8.6

k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0

gcr.io/k8s-minikube/storage-provisioner:v1.8.1

```

以下的是我参考别人文章自行添加的，以备不时之需：

```

k8s.gcr.io/k8s-dns-sidecar-amd64:1.14.8

k8s.gcr.io/8s-dns-dnsmasq-nanny-amd64:1.14.8

k8s.gcr.io/k8s-dns-kube-dns-amd64:1.14.8

quay.io/coreos/flannel:v0.9.1-amd64

```

我写成了自动安装docker pull images的代码，很抱歉没有写成一个完整的代码。

```

vim imagespull.sh

#!/bin/bash

apilist="kube-apiserver-amd64:v1.11.3 kube-controller-manager-amd64:v1.11.3 kube-scheduler-amd64:v1.11.3 kube-proxy-amd64:v1.11.3 pause:3.1 etcd-amd64:3.2.18 coredns:1.1.3 kube-addon-manager:v8.6 kubernetes-dashboard-amd64:v1.10.0 k8s-dns-sidecar-amd64:1.14.8 k8s-dns-dnsmasq-nanny-amd64:1.14.8 k8s-dns-kube-dns-amd64:1.14.8"

mirror=k8s.gcr.io/

newmirror=anjia0532/google-containers.

for i in $apilist

docker pull $newmirror$i

docker tag $newmirror$i $mirror$i

done

chmod +x imagespull.sh

./imagespull.sh

docker pull anjia0532/k8s-minikube.storage-provisioner:v1.8.1

docker tag anjia0532/k8s-minikube.storage-provisioner:v1.8.1 gcr.io/k8s-minikube/storage-provisioner:v1.8.1

docker pull quay.io/coreos/flannel:v0.9.1-amd64

```

6. ##### 启动minikube，很关键一个地方。这个时候需要同时打开两个终端，使用另一个终端进行minikube ssh 操作，如果能连接进minikube虚拟机，切换到第一个终端进行Crtl +Z操作（如果稍晚暂停的话，大概率可能部署失败），然后在minikube虚拟机中（minikube ssh），执行我写的下载镜像的命令，镜像下载完毕之后。切换到第一个终端，执行fg，直至完成。

```

minikube start --kubernetes-version v1.11.3

```

7. 下面是一个报错截图日志截图。显示了缺少gcr镜像文件。可以通过minikube logs查看。

```

E1214 10:47:28.634110 8089 start.go:342] Error starting cluster: kubeadm init error

sudo /usr/bin/kubeadm init --config /var/lib/kubeadm.yaml --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests --ignore-preflight-errors=DirAvailable--data-minikube --ignore-preflight-errors=Port-10250 --ignore-preflight-errors=FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml --ignore-preflight-errors=FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml --ignore-preflight-errors=FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml --ignore-preflight-errors=FileAvailable--etc-kubernetes-manifests-etcd.yaml --ignore-preflight-errors=Swap --ignore-preflight-errors=CRI

running command: : running command:

, output: [init] using Kubernetes version: v1.11.3

[preflight] running pre-flight checks

[WARNING Swap]: running with swap on is not supported. Please disable swap

I1214 02:45:48.560337 2760 kernel_validator.go:81] Validating kernel version

I1214 02:45:48.560481 2760 kernel_validator.go:96] Validating kernel config

[WARNING SystemVerification]: docker version is greater than the most recently validated version. Docker version: 18.06.1-ce. Max validated version: 17.03

[preflight/images] Pulling images required for setting up a Kubernetes cluster

[preflight/images] This might take a minute or two, depending on the speed of your internet connection

[preflight/images] You can also perform this action in beforehand using 'kubeadm config images pull'

[preflight] Some fatal errors occurred:

[ERROR ImagePull]: failed to pull image [k8s.gcr.io/kube-apiserver-amd64:v1.11.3]: exit status 1

[ERROR ImagePull]: failed to pull image [k8s.gcr.io/kube-controller-manager-amd64:v1.11.3]: exit status 1

[ERROR ImagePull]: failed to pull image [k8s.gcr.io/kube-scheduler-amd64:v1.11.3]: exit status 1

[ERROR ImagePull]: failed to pull image [k8s.gcr.io/kube-proxy-amd64:v1.11.3]: exit status 1

[ERROR ImagePull]: failed to pull image [k8s.gcr.io/pause:3.1]: exit status 1

[ERROR ImagePull]: failed to pull image [k8s.gcr.io/etcd-amd64:3.2.18]: exit status 1

[ERROR ImagePull]: failed to pull image [k8s.gcr.io/coredns:1.1.3]: exit status 1

[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`

: Process exited with status 2

================================================================================

An error has occurred. Would you like to opt in to sending anonymized crash

information to minikube to help prevent future errors?

To opt out of these messages, run the command:

minikube config set WantReportErrorPrompt false

```

8. 有一些常用命令的命令：

查看kubernetes 相应版本所需镜像

```

kubeadm --kubernetes-version=1.11.0 config images list

```

下载kubernetes 响应版本的镜像(当然需要×××)

```

kubeadm config images pull

```

删除minikube，重新安装

```

minikube delete

rm -rf ~/.minikube

minikube start

```

执行执行minikube ISO (可以在minikube start --help 中的--iso-url 中查看,自己下载到本地)

```

minikube start --iso-url xx

```

本来是想把家里面的破电脑利用起来做rook实验，原以为三两下安装一个minikube没问题，谁曾想安装过程这么坑爹。花了很长时间，但是没关系至少有所收获，对你们也有一定的参考作用。废话不多说了，继续加油吧。

文章是我使用typora编写的，谁知道直接粘贴到51blog格式出现问题，只能再重新粘贴一份，也可以去我的私人博客上去查看www.vavikast.com

参考链接：

[Minikube - Kubernetes本地实验环境 ](https://yq.aliyun.com/articles/221687)

[kubernets/minikube](https://github.com/kubernetes/minikube)

[Running Kubernetes Locally via Minikube](https://kubernetes.io/docs/setup/minikube/)

[Minikube releases](https://github.com/kubernetes/minikube/releases)

[Install VirtualBox ](https://www.virtualbox.org/wiki/Linux_Downloads)

Install Minikube**（centos7）

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