k8s

mac平台

安装brew

。。。

安装

brew install kubectl

brew cask install minikube

$ which minikube
$ minikube start

错误提示

stderr: failed to pull image "k8s.gcr.io/kube-apiserver:v1.13.4": output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

打印日志

minikube logs

使用代理：

$ minikube delete
$ minikube start --docker-env HTTP_PROXY=http://10.0.2.2:1087 --docker-env HTTPS_PROXY=http://10.0.2.2:1087

代理参考资料

https://github.com/kubernetes/minikube/blob/master/docs/http_proxy.md
https://my.oschina.net/csq/blog/3014879

配置pod

client-pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: client-pod
  labels:
    component: web
spec:
  containers:
    - name: client
      image: stephengrider/multi-worker
      ports:
        - containerPort: 3000

配置server

apiVersion: v1
kind: Service
metadata:
  name: client-node-port
spec:
  type: NodePort
  ports:
    - port: 3050
      targetPort: 3000
      nodePort: 31515
  selector:
    component: web

$ kubectl apply -f client-pod.yaml
$ kubectl apply -f client-node-port.yaml
$ kubectl get pods
$ kubectl get services

修改client-pod.yaml中的images,重新执行配置文件即可更新

$ kubectl apply -f client-pod.yaml

获取ip

$ minikube ip

获取pod详细描述

$ kubectl describe pod client-pod

删除pod

$ kubectl delete -f client-pod.yaml

书写deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: client-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      component: web
  template:
    metadata:
      labels:
        component: web
    spec:
      containers:
        - name: client
          image: stephengrider/multi-client
          ports:
            - containerPort: 3000
```         

## 应用deployment

$ kubectl apply -f client-deployment.yaml
$ kubectl get pods
$ kubectl get deployments
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
client-deployment 1 1 1 1 30s

如果image有更新，可以采取下面的方式强制更新：

docker build -t stephengrider/multi-client:v5 .
docker push stephengrider/multi-client:v5
$ kubectl set image deployment/client-deployment client=stephengrider/multi-client:v5

## docker ps 得到k8s虚拟机的信息