使用minikube 搭建本地k8s 环境代码片段

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代码片段

Ubuntu 小笨蛋发布于：2022年03月24日更新于：2022年03月24日 273

这是一篇 K8S 的 HelloWorld,在学习K8S官方文档时环境搭建的一个记录，照着文档下来还是比较顺利的。

### 安装kubectl

下载 kubectl
```yaml
curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
```

下载 checksum
```yaml
curl -LO "https://dl.k8s.io/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl.sha256"
```

检查sha265sum
```yaml
arvin@ubuntu:~$ echo "$(<kubectl.sha256) kubectl" | sha256sum --check
kubectl: OK
```

安装 
`sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl`

安装结果
```yaml
arvin@ubuntu:~$ kubectl version --client
Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.1", GitCommit:"5e58841cce77d4bc13713ad2b91fa0d961e69192", GitTreeState:"clean", BuildDate:"2021-05-12T14:18:45Z", GoVersion:"go1.16.4", Compiler:"gc", Platform:"linux/amd64"}
```

### 安装minikube
minikube是本地的Kubernetes，致力于使Kubernetes易于学习和开发。

下载minikube
 `curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64`
 
 安装
` sudo install minikube-linux-amd64 /usr/local/bin/minikube`

### 启动minikube

`minikube start`

### 问题合集
1.提示docker 驱动不能与管理员权限一起使用

```yaml
root@LAPTOP-893RUT1U:~$ sudo minikube start
😄 minikube v1.20.0 on Ubuntu 20.10
✨ Automatically selected the docker driver. Other choices: none, ssh
🛑 The "docker" driver should not be used with root privileges.
💡 If you are running minikube within a VM, consider using --driver=none:
📘 https://minikube.sigs.k8s.io/docs/reference/drivers/none/

❌ Exiting due to DRV_AS_ROOT: The "docker" driver should not be used with root privileges.
```

2.提示docker 没有权限
```yaml
root@LAPTOP-893RUT1U:~$ minikube start
😄 minikube v1.20.0 on Ubuntu 20.10
👎 Unable to pick a default driver. Here is what was considered, in preference order:
▪ podman: Not installed: exec: "podman": executable file not found in $PATH
▪ virtualbox: Not installed: unable to find VBoxManage in $PATH
▪ vmware: Not installed: exec: "docker-machine-driver-vmware": executable file not found in $PATH
▪ docker: Not healthy: "docker version --format {{.Server.Os}}-{{.Server.Version}}" exit status 1: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.24/version: dial unix /var/run/docker.sock: connect: permission denied
▪ kvm2: Not installed: exec: "virsh": executable file not found in $PATH

❌ Exiting due to DRV_NOT_DETECTED: No possible driver was detected. Try specifying --driver, or see https://minikube.sigs.k8s.io/docs/start/
```
解决办法

```yaml
root@LAPTOP-893RUT1U:~$ sudo groupadd docker    #添加docker用户组
groupadd: group 'docker' already exists

root@LAPTOP-893RUT1U:~$ sudo gpasswd -a $USER docker #将登陆用户加入到docker用户组中
Adding user arvin to group docker

root@LAPTOP-893RUT1U:~$ newgrp docker  #更新用户组
```
3.如果出现了Package 'docker-ce' has no installation candidate 的提示，并且你已经执行apt-get update的命令

依次再执行以下命令：

```shell
#配置阿里云的gpg
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
 
#配置阿里云的docker镜像
sudo add-apt-repository "deb [arch=amd64] https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"

#执行安装命令
sudo apt-get install docker-ce docker-ce-cli containerd.io
```
执行`sudo service docker start`启动docker，执行`docker ps`查看状态

4.DRV_AS_ROOT
如果出现`Exiting due to DRV_AS_ROOT: The "docker" driver should not be used with root privileges.`错误，使用`minikube start --force --driver=docker`启动即可

这里⇓感觉得写点什么，要不显得有点空，但还没想好写什么... 返回顶部