一、定义 Dockerfile

1.在GitLab的源代码中添加Dockerfile

先点击代码首页的“+”号，然后点击 New file

定义 Dockerfile-1

填写文件名称:Dockerfile和文件内容

# 基础镜像可以按需修改，可以更改为公司自有镜像
FROM registry.cn-beijing.aliyuncs.com/dotbalo/jre:8u211-data
# jar 包名称改成实际的名称，本示例为 spring-cloud-eureka-0.0.1-SNAPSHOT.jar
COPY target/spring-cloud-eureka-0.0.1-SNAPSHOT.jar ./
# 启动 Jar 包
CMD java -jar spring-cloud-eureka-0.0.1-SNAPSHOT.jar

点击【Commit changes】

定义 Dockerfile-2

二、定义 Kubernetes 资源

在GitLab创建的Group为 kubernetes，可以将其认为是一个项目，同一个项目可以部署至Kubernetes集群中同一个Namespace中，本示例为kubernetes命名空间。由于使用的是私有仓库，因此也需要先配置拉取私有仓库镜像的密钥：

$ kubectl create ns  kubernetes
$ kubectl create secret docker-registry harborkey --docker-server=192.168.1.33 --docker-username=admin --docker-password=YOUR_HARBOR_PASSWORD --docker-email=mail@kubeasy.com  -n kubernetes

配置该应用的Deployment并定义该应用的Service和Ingress

apiVersion: v1
kind: Service
metadata:
  creationTimestamp: null
  labels:
    app: spring-boot-project
  name: spring-boot-project
  namespace: kubernetes
spec:
  ports:
  - name: web
    port: 8761
    protocol: TCP
    targetPort: 8761
  selector:
    app: spring-boot-project
  sessionAffinity: None
  type: ClusterIP
status:
  loadBalancer: {}
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  creationTimestamp: null
  name: spring-boot-project
  namespace: kubernetes
spec:
  rules:
  - host: spring-boot-project.test.com
    http:
      paths:
      - backend:
          service:
            name: spring-boot-project
            port:
              number: 8761
        path: /
        pathType: ImplementationSpecific
status:
  loadBalancer: {}
---
apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: spring-boot-project
  name: spring-boot-project
  namespace: kubernetes
spec:
  replicas: 1
  selector:
    matchLabels:
      app: spring-boot-project
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: spring-boot-project
    spec:
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - podAffinityTerm:
              labelSelector:
                matchExpressions:
                - key: app
                  operator: In
                  values:
                  - spring-boot-project
              topologyKey: kubernetes.io/hostname
            weight: 100
      containers:
      - env:
        - name: TZ
          value: Asia/Shanghai
        - name: LANG
          value: C.UTF-8
        image: nginx
        imagePullPolicy: IfNotPresent
        lifecycle: {}
        livenessProbe:
          failureThreshold: 2
          initialDelaySeconds: 30
          periodSeconds: 10
          successThreshold: 1
          tcpSocket:
            port: 8761
          timeoutSeconds: 2
        name: spring-boot-project
        ports:
        - containerPort: 8761
          name: web
          protocol: TCP
        readinessProbe:
          failureThreshold: 2
          initialDelaySeconds: 30
          periodSeconds: 10
          successThreshold: 1
          tcpSocket:
            port: 8761
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 994m
            memory: 1170Mi
          requests:
            cpu: 10m
            memory: 55Mi
      dnsPolicy: ClusterFirst
      imagePullSecrets:
      - name: harborkey
      restartPolicy: Always
      securityContext: {}
      serviceAccountName: default