k8s学习六-k8s部署go服务

package main
import (
   "flag"
   "github.com/gin-gonic/gin"
   "net/http"
   "os"
)
var version = flag.String("v", "v1", "v1")
func main() {
   router := gin.Default()
   router.GET("", func(c *gin.Context) {
      flag.Parse()
      hostname, _ := os.Hostname()
      c.String(http.StatusOK, "This is version:%s running in pod %s", *version, hostname)
   })
   router.Run(":8080")
}

go run main.go

(base) tioncico@appledeMacBook-Pro test % curl 127.0.0.1:8080
This is version:v1 running in pod appledeMacBook-Pro.local%

FROM golang:latest AS build
WORKDIR /go/src/test
COPY . /go/src/test
RUN go env -w GOPROXY=https://goproxy.cn,direct
RUN CGO_ENABLED=0 go build -v -o main .
FROM alpine AS api
RUN mkdir /app
COPY --from=build /go/src/test/main /app
WORKDIR /app
ENTRYPOINT \["./main", "-v" ,"1.0.1"\]

docker build -t go:v1.0.1 .   # 编译镜像
docker tag go:v1.0.1 tioncico/go:v1.0.1  # 增加tag
docker push tioncico/go:v1.0.1 # 上传到docker hub

\-\-\-
apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-deployment
  labels:
    app: go
spec:
  selector:
    matchLabels:
      app: go
  replicas: 3
  minReadySeconds: 5
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
  template:
    metadata:
      labels:
        app: go
    spec:
      containers:
        - image: tioncico/go:v1.0.1
          name: go
          imagePullPolicy: Always
          command: \["./main","-v","v1.0.1"\]
          ports:
            - containerPort: 8080
              protocol: TCP
\-\-\-
apiVersion: v1
kind: Service
metadata:
  name: go-service
  labels:
    app: go
spec:
  selector:
    app: go
  ports:
    - name: go-port
      protocol: TCP
      port: 8080
      targetPort: 8080
      nodePort: 30080
  type: NodePort

kubectl apply -f go.yaml

root@master:/home/tioncico# kubectl get pods
NAME                             READY   STATUS    RESTARTS       AGE
go-deployment-86f769995d-6j4pq   1/1     Running   0              2m20s
go-deployment-86f769995d-8pcsd   1/1     Running   0              2m20s
go-deployment-86f769995d-lz7vf   1/1     Running   0              2m20s
nginx-7cbb8cd5d8-w9tn2           1/1     Running   3 (140m ago)   28h

root@master:/home/tioncico# curl http://192.168.192.9:30080
This is version:v1.0.1 running in pod go-deployment-86f769995d-lz7vf
root@master:/home/tioncico# curl http://192.168.192.9:30080                          ^C
root@master:/home/tioncico# curl http://192.168.192.10:30080
This is version:v1.0.1 running in pod go-deployment-86f769995d-8pcsd
root@master:/home/tioncico#