K8s部署发布Golang应用程序的实现方法

本文主要介绍了K8s部署发布Golang应用程序的实现方法，文中通过示例代码介绍的非常详细，需要的朋友们下面随着小编来一起学习学习吧

创建dockerfile

 FROM golang:1.14-alpine ENV GOPROXY=https://goproxy.cn WORKDIR /build COPY . . EXPOSE 8088 RUN mkdir /app RUN  go mod tidy RUN go build -o /app/alertGo alertGo.go WORKDIR /app CMD ["/app/alertGo"]

打包并且推送

 docker build -t 10.206.16.4/k8s-go/alert.sentsss.com:v2 . docker push 10.206.16.4/k8s-go/alert.sentsss.com:v2

创建namespace

 apiVersion: v1 kind: Namespace metadata: name: k8s-go

创建deployment

 apiVersion: apps/v1 kind: Deployment metadata: name: alertgo namespace: k8s-go spec: selector: matchLabels: app: alertgo replicas: 2 template: metadata: labels: app: alertgo spec: imagePullSecrets: - name: registry-pull-secret containers: - name: alertgo image: 10.206.16.4/k8s-go/alert.sentsss.com:v2 ports: - containerPort: 8088 livenessProbe: httpGet: path: / port: 8088 initialDelaySeconds: 30 periodSeconds: 10 successThreshold: 1 failureThreshold: 3 timeoutSeconds: 1 readinessProbe: httpGet: path: / port: 8088 initialDelaySeconds: 30 periodSeconds: 10 successThreshold: 1 failureThreshold: 3 timeoutSeconds: 1 lifecycle: preStop: exec: command: ["/bin/bash","-c","sleep 20"] resources: limits: cpu: 20m memory: 20Mi requests: cpu: 10m memory: 10Mi

创建service

 apiVersion: v1 kind: Service metadata: name: alertgo namespace: k8s-go spec: selector: app: alertgo ports: - port: 80 targetPort: 8088

创建ingress

 kind: Ingress # 对象类型 apiVersion: networking.k8s.io/v1beta1 metadata: name: alertgo namespace: k8s-go spec: rules: - host: alertgo.xxx.com http: paths: - path: / backend: serviceName: alertgo servicePort: 80

创建hpa

 kind: HorizontalPodAutoscaler # 对象类型，简称 hpa，水平自动伸缩 apiVersion: autoscaling/v2beta2 # autoscaling/v2beta2 与 autoscaling/v1 的 API 有很大的不同，注意识别两者的差异 metadata: name: alertgo namespace: fronted spec: scaleTargetRef: # 伸缩的目标对象 apiVersion: apps/v1 # 对象版本 kind: Deployment # 目标对象的类型 name: alertgo # 目标对象的名称 minReplicas: 3 # 最小副本数 maxReplicas: 6 # 最大副本数 metrics: # 指标 - type: Resource # 类型：资源 resource: name: memory # 内存 target: type: Utilization averageUtilization: 70 # 1% 这个值是为了实验，具体值请参考业务方实际情况而定 - type: Resource resource: name: cpu target: type: Utilization averageUtilization: 70

结果查看

[root@k8s-master-01 alertGo]# kubectl get pods,svc,ingress,hpa -n k8s-go
NAME                           READY   STATUS              RESTARTS   AGE
pod/alertgo-5bc79ccd65-8thmw   1/1     Running             0          37m
pod/alertgo-5bc79ccd65-dm8ll   1/1     Running             0          38m
pod/alertgo-5bc79ccd65-m9cd4   0/1     ContainerCreating   0          0s
NAME              TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)   AGE
service/alertgo   ClusterIP   10.1.140.126           80/TCP    65m
NAME                         HOSTS                 ADDRESS   PORTS   AGE
ingress.extensions/alertgo   alertgo.sentsss.com             80      34m
NAME                                          REFERENCE            TARGETS            MINPODS   MAXPODS   REPLICAS   AGE
horizontalpodautoscaler.autoscaling/alertgo   Deployment/alertgo   79%/70%, 10%/70%   2         6         2          15s

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