K8S配置微服务样例

1、编写Dockerfile

1)、Dockerfile 文件

FROM openjdk:8-jdk-alpine
ARG JAR_FILE=kafka-demo-0.0.1-SNAPSHOT.jar
ADD ${JAR_FILE} kafka.jar
ENTRYPOINT ["java","-jar","/kafka.jar"]

2）、制作镜像

docker build -t kafka-demo:latest . #制作本地镜像
docker tag kafka-demo:latest 172.171.2.148:5000/kafka-demo:latest # 标记本地镜像，将其归入某一仓库
docker push 172.171.2.148:5000/kafka-demo:latest #上传本地镜像

2、配置yaml 文件

apiVersion: v1
kind: Service
metadata:
  name: kafka-demo
  namespace: dev
  labels:
    app: kafka-demo
spec:
  type: NodePort
  ports:
    - port: 8090
      nodePort: 30091 #service对外开放端口
  selector:
    app: kafka-demo
---
apiVersion: apps/v1
kind: Deployment #对象类型
metadata:
  name: kafka-demo #名称
  namespace: dev
  labels:
    app: kafka-demo #标注
spec:
  replicas: 1 #运行容器的副本数，修改这里可以快速修改分布式节点数量
  selector:
    matchLabels:
      app: kafka-demo
  template:
    metadata:
      labels:
        app: kafka-demo
    spec:
      containers: #docker容器的配置
        - name: kafka-demo
          image: 172.171.2.148:5000/kafka-demo:latest  # pull镜像的地址 ip:prot/dir/images:tag
          imagePullPolicy: Always   #pull镜像时机，
          ports:
            - containerPort: 8080 #容器对外开放端口,需与springboot配置文件一致
      #从私有仓库拉取镜像凭证
      #imagePullSecrets:
        #- name: regcred
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