【Docker】Mac下Docker启动Kubernetes_docker enable kubernetes

1.背景

在Mac中安装了Docker之后，会自动安装了Kubernetes，正常情况下，我们只需要在Docker的Preferrences->Kubernetes中勾选Enable Kubernetes，然后点击Apply按钮即可。但由于伟大的墙的存在，这么一个简单的启动也会变得一波三折。

如果您是直接在Docker中启用Kubernetes，Kubernetes的状态会一直都是kubernetes is starting…，原因是有一些Kubernetes依赖的镜像不能正常的下载。

参考：http://www.fwhyy.com/2019/05/building-kubernetes-in-mac/

Github上有个开源项目可以帮我们手动拉取镜像，执行下面命令拉去改项目代码到本地

git clone https://github.com/maguowei/k8s-docker-for-mac

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在Docker中修改镜像地址为国内，如下图：

在命令行进入到k8s-docker-for-mac目录，执行sh load_images.sh就可以拉去镜像了。

(base) lcc@lcc github$  git clone https://github.com/maguowei/k8s-docker-for-mac
Cloning into 'k8s-docker-for-mac'...
remote: Enumerating objects: 10, done.
remote: Counting objects: 100% (10/10), done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 223 (delta 2), reused 7 (delta 2), pack-reused 213
Receiving objects: 100% (223/223), 850.63 KiB | 53.00 KiB/s, done.
Resolving deltas: 100% (83/83), done.

(base) lcc@lcc github$ cd k8s-docker-for-mac/
(base) lcc@lcc k8s-docker-for-mac$ sh load_images.sh
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后来没搞定，还是用外网下载的才可以

验证集群状态

 lcc@lcc ~$  kubectl cluster-info
Kubernetes master is running at https://kubernetes.docker.internal:6443
KubeDNS is running at https://kubernetes.docker.internal:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
(base) lcc@lcc ~$


(base) lcc@lcc ~$ kubectl get nodes
NAME             STATUS   ROLES    AGE     VERSION
docker-desktop   Ready    master   3h32m   v1.16.6-beta.0
(base) lcc@lcc ~$

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查看详情

(base) lcc@lcc ~$ kubectl describe node
Name:               docker-desktop
Roles:              master
Labels:             beta.kubernetes.io/arch=amd64
                    beta.kubernetes.io/os=linux
                    kubernetes.io/arch=amd64
                    kubernetes.io/hostname=docker-desktop
                    kubernetes.io/os=linux
                    node-role.kubernetes.io/master=
Annotations:        kubeadm.alpha.kubernetes.io/cri-socket: /var/run/dockershim.sock
                    node.alpha.kubernetes.io/ttl: 0
                    volumes.kubernetes.io/controller-managed-attach-detach: true
CreationTimestamp:  Mon, 18 May 2020 08:42:43 +0800
Taints:             <none>
Unschedulable:      false
Conditions:
  Type             Status  LastHeartbeatTime                 LastTransitionTime                Reason                       Message
  ----             ------  -----------------                 ------------------                ------                       -------
  MemoryPressure   False   Mon, 18 May 2020 12:15:02 +0800   Mon, 18 May 2020 08:42:38 +0800   KubeletHasSufficientMemory   kubelet has sufficient memory available
  DiskPressure     False   Mon, 18 May 2020 12:15:02 +0800   Mon, 18 May 2020 08:42:38 +0800   KubeletHasNoDiskPressure     kubelet has no disk pressure
  PIDPressure      False   Mon, 18 May 2020 12:15:02 +0800   Mon, 18 May 2020 08:42:38 +0800   KubeletHasSufficientPID      kubelet has sufficient PID available
  Ready            True    Mon, 18 May 2020 12:15:02 +0800   Mon, 18 May 2020 08:42:38 +0800   KubeletReady                 kubelet is posting ready status
Addresses:
  InternalIP:  192.168.65.3
  Hostname:    docker-desktop
Capacity:
 cpu:                2
 ephemeral-storage:  61255492Ki
 hugepages-1Gi:      0
 hugepages-2Mi:      0
 memory:             2039264Ki
 pods:               110
Allocatable:
 cpu:                2
 ephemeral-storage:  56453061334
 hugepages-1Gi:      0
 hugepages-2Mi:      0
 memory:             1936864Ki
 pods:               110
System Info:
 Machine ID:                 01675cd8-892b-4dcd-8d18-f912f731d55c
 System UUID:                d15a4cac-0000-0000-b965-c09f8687dea1
 Boot ID:                    426d1ee6-228a-42ff-bf5f-a6f245745104
 Kernel Version:             4.19.76-linuxkit
 OS Image:                   Docker Desktop
 Operating System:           linux
 Architecture:               amd64
 Container Runtime Version:  docker://19.3.8
 Kubelet Version:            v1.16.6-beta.0
 Kube-Proxy Version:         v1.16.6-beta.0
Non-terminated Pods:         (14 in total)
  Namespace                  Name                                         CPU Requests  CPU Limits  Memory Requests  Memory Limits  AGE
  ---------                  ----                                         ------------  ----------  ---------------  -------------  ---
  docker                     compose-78f95d4f8c-548vm                     0 (0%)        0 (0%)      0 (0%)           0 (0%)         3h31m
  docker                     compose-api-6ffb89dc58-65qkc                 0 (0%)        0 (0%)      0 (0%)           0 (0%)         3h31m
  kube-system                coredns-5644d7b6d9-db9gw                     100m (5%)     0 (0%)      70Mi (3%)        170Mi (8%)     3h32m
  kube-system                coredns-5644d7b6d9-j4wb9                     100m (5%)     0 (0%)      70Mi (3%)        170Mi (8%)     3h32m
  kube-system                etcd-docker-desktop                          0 (0%)        0 (0%)      0 (0%)           0 (0%)         3h31m
  kube-system                kube-apiserver-docker-desktop                250m (12%)    0 (0%)      0 (0%)           0 (0%)         3h31m
  kube-system                kube-controller-manager-docker-desktop       200m (10%)    0 (0%)      0 (0%)           0 (0%)         3h31m
  kube-system                kube-proxy-vnw6l                             0 (0%)        0 (0%)      0 (0%)           0 (0%)         3h32m
  kube-system                kube-scheduler-docker-desktop                100m (5%)     0 (0%)      0 (0%)           0 (0%)         3h31m
  kube-system                kubernetes-dashboard-7c54d59f66-b7dvl        0 (0%)        0 (0%)      0 (0%)           0 (0%)         13m
  kube-system                storage-provisioner                          0 (0%)        0 (0%)      0 (0%)           0 (0%)         3h31m
  kube-system                vpnkit-controller                            0 (0%)        0 (0%)      0 (0%)           0 (0%)         3h31m
  kubernetes-dashboard       dashboard-metrics-scraper-c79c65bb7-n7jjw    0 (0%)        0 (0%)      0 (0%)           0 (0%)         5m16s
  kubernetes-dashboard       kubernetes-dashboard-56484d4c5-5z7dk         0 (0%)        0 (0%)      0 (0%)           0 (0%)         5m17s
Allocated resources:
  (Total limits may be over 100 percent, i.e., overcommitted.)
  Resource           Requests    Limits
  --------           --------    ------
  cpu                750m (37%)  0 (0%)
  memory             140Mi (7%)  340Mi (17%)
  ephemeral-storage  0 (0%)      0 (0%)
Events:              <none>
(base) lcc@lcc ~$
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3.部署 kubernetes dashboard

(base) lcc@lcc kubernetes$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created
(base) lcc@lcc kubernetes$ ll
total 0
drwxr-xr-x   2 lcc  staff    64  5 18 12:09 ./
drwxr-xr-x@ 43 lcc  staff  1376  5 18 12:09 ../
(base) lcc@lcc kubernetes$ kubectl proxy --port=8080
Starting to serve on 127.0.0.1:8080
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该文件默认位置在

(base) lcc@lcc kubernetes$ cat /System/Volumes/Data/Users/lcc/soft/kubernetes/kubernetes-dashboard.yaml
404: Not Found(base)
(base) lcc@lcc kubernetes$ cat kubernetes-dashboard.yaml
404: Not Found(base)
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这个居然为空，先不管他。不过我感觉为空肯定会埋下炸弹