Ubuntu 20.04部署minikube配置不上阿里云的minikube镜像

1. 之前在 Ubuntu Server 18.04上部署 minikube

   Ubuntu 1804 部署minikube

   启动指令 minikube start --image-mirror-country=cn
   它会自动设置为阿里云镜像

   直接会有提示

    ...
    Using image repository registry.cn-hangzhou.aliyuncs.com/google_containers
     ...
   

   但是在 Ubuntu Server 20.04 上死活不行,所以，很慢很慢，甚至就卡死了！

2. 为了让他能够跑起来,直接 Docker pull

   docker pull registry.cn-hangzhou.aliyuncs.com/k8s-minikube/kicbase

   docker tag registry.cn-hangzhou.aliyuncs.com/k8s-minikube/kicbase gcr.io/k8s-minikube/kicbase:v0.0.28

   起来是起来了，但是，还是很慢！
   主要是在 Pulling base image 之后，那个 index…卡住！

    ...
    ????  Pulling base image ...
        > index.docker.io/kicbase/sta...: 0 B [______________________] ?% ? p/s 50s
        > index.docker.io/kicbase/sta...: 46.27 MiB / 355.78 MiB  13.01% 1.92 MiB p
        > index.docker.io/kicbase/sta...: 0 B [_____________________] ?% ? p/s 4m9s
        ...
   

3. 对比 2 个服务器上的 minikube logs 和 config

   $ minikube logs |grep config.json

    I1125 14:13:57.333886   14781 profile.go:147] Saving config to /home/dhbm/.minikube/profiles/minikube/config.json ...
    I1125 14:13:59.187657   14781 profile.go:147] Saving config to /home/dhbm/.minikube/profiles/minikube/config.json ...
   

   可以看到，在 start 的时候会将本次的设置保存到 config.json

   在 ubuntu 20.04 上是这样的

   $ cat /home/dhbm/.minikube/profiles/minikube/config.json

    ...
    {
        "Name": "minikube",
        "KeepContext": false,
        "EmbedCerts": false,
        "MinikubeISO": "",
        "KicBaseImage": "docker.io/kicbase/stable:v0.0.28",
   

   而在 ubuntu 18.04 上是这样的

   $ cat /home/dhbm/.minikube/profiles/minikube/config.json
   …
   {
   “Name”: “minikube”,
   “KeepContext”: false,
   “EmbedCerts”: false,
   “MinikubeISO”: “”,
   “KicBaseImage”: “registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:[email protected]:4780f1897569d2bf77aafb3d133a08d42b4fe61127f06fcfc90c2c5d902d893c”,

   可见， 20.04 上config 并没有改变 KicBaseImage 配置

4. 将和国内镜像有关的配置全部加到指令中，终于快起来了！如下！

   $ minikube start --image-mirror-country=‘cn’ --image-repository=‘registry.cn-hangzhou.aliyuncs.com/google_containers’ --base-image=‘registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:v0.0.28’

    ????  minikube v1.24.0 on Ubuntu 20.04 (vbox/amd64)
    ✨  Automatically selected the docker driver. Other choices: ssh, none
    ✅  Using image repository registry.cn-hangzhou.aliyuncs.com/google_containers
    ????  Starting control plane node minikube in cluster minikube
    ????  Pulling base image ...
    ????  Creating docker container (CPUs=2, Memory=2200MB) ...
    ????  Preparing Kubernetes v1.22.3 on Docker 20.10.8 ...
        ▪ Generating certificates and keys ...
        ▪ Booting up control plane ...
        ▪ Configuring RBAC rules ...
    ????  Verifying Kubernetes components...
        ▪ Using image registry.cn-hangzhou.aliyuncs.com/google_containers/storage-provisioner:v5
    ????  Enabled addons: default-storageclass, storage-provisioner
    ????  Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default
   

5. 运行成功之后，再来查看config

   $ cat /home/dhbm/.minikube/profiles/minikube/config.json

    "Name": "minikube",
    ...
    	"KicBaseImage": "registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:v0.0.28",
    	...
    "KubernetesConfig": {
    		"KubernetesVersion": "v1.22.3",
    		...
    		"ImageRepository": "registry.cn-hangzhou.aliyuncs.com/google_containers",
    		...
    		},
    ...
   

   $minikube stop 之后，config.json 依然存在！

   重新start ，即使使用最简单的方式 $minikube start ，速度一样会比较快！

   说明之前 N 次重复，因为已经保存了相关设置

   $ minikube delete 之后，config.json 不存在了！

   这次再使用最简单的方式 $minikube start ，就很慢很慢了！

   改成带选项的命令，就会变化，并且变快了！

6. 所以，解决 start 慢的方法是使用阿里云镜像，简单粗暴的方式是：

    minikube delete 
    
    docker pull registry.cn-hangzhou.aliyuncs.com/k8s-minikube/kicbase 
    
    docker tag registry.cn-hangzhou.aliyuncs.com/k8s-minikube/kicbase gcr.io/k8s-minikube/kicbase:v0.0.28
    
    minikube start  --image-mirror-country='cn' --image-repository='registry.cn-hangzhou.aliyuncs.com/google_containers' --base-image='registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:v0.0.28'
   

   只要成功了，本次的那些参数就会保存到 config ，除非删除 Cluster！

7. 为了方便，设置alias

   $ sudo vim .bashrc
   加上 2 条 alias

    # 20211125 
    alias minikube.cn="minikube start  --image-mirror-country='cn' --image-repository='registry.cn-hangzhou.aliyuncs.com/google_containers' --base-image='registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:v0.0.28'"
    alias kubectl="minikube kubectl --"
   

   启动生效
   $ source .bashrc

   $ alias |grep mini

    alias kubectl='minikube kubectl --'
    alias minikube.cn='minikube start  --image-mirror-country='\''cn'\'' --image-repository='\''registry.cn-hangzhou.aliyuncs.com/google_containers'\'' --base-image='\''registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:v0.0.28'\'''
   

   后续关机重启后，全部使用 minikube.cn 指令启动