k8s部署java项目

# 编译

1.项目地址

前端：https://github.com/elunez/eladmin-web
后端：https://github.com/elunez/eladmin

2.下载后端包并编译

git clone https://github.com/elunez/eladmin
cd eladmin
mvn clean package -Dmaven.test.skip=true

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3.编写Dockerfile文件

# 使用官方的 OpenJDK 镜像作为基础镜像
FROM openjdk:11-jre-slim

# 设置工作目录
WORKDIR /app
# 安装 tzdata 以设置时区和中文字体
RUN apt-get update && \
    apt-get install -y tzdata fonts-wqy-zenhei fonts-arphic-ukai && \
    rm -rf /var/lib/apt/lists/*
# 将本地的 jar 文件复制到容器中
COPY eladmin-system/target/eladmin-system-2.7.jar /app/eladmin-system-2.7.jar
COPY eladmin-system/src/main/resources/config/application.yml /app/config/
COPY eladmin-system/src/main/resources/config/application-prod.yml /app/config/

# 设置上海时区
ENV TZ=Asia/Shanghai
# 设置环境变量
ENV SPRING_PROFILES_ACTIVE=prod \
    TZ=Asia/Shanghai \
    JAVA_OPTS="-Xms512m -Xmx1024m"
# 暴露应用运行所需的端口
EXPOSE 8000

# 启动 Java 应用
ENTRYPOINT ["sh", "-c", "java ${JAVA_OPTS} -jar /app/eladmin-system-2.7.jar \
    --spring.config.location=file:/app/config/application.yml,file:/app/config/application-prod.yml \
    --spring.profiles.active=prod"]

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4.执行java打包

docker build -t docker.cnb.cool/zzppjj/docker-images/eladmin-system:v1 .

5.下载前端包并执行多阶段镜像编译打包

git clone https://github.com/elunez/eladmin-web
cd eladmin-web

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6.前端Dockerfile文件

FROM docker.cnb.cool/zzppjj/docker-images/node:14.18 as build-stage
WORKDIR /app
COPY . .
RUN sed -i s#https://eladmin.vip#http://eladmin.zzppjj.top#g .env.production \
&& sed -i s#wss://eladmin.vip#wss://eladmin.zzppjj.top#g .env.production \
&& npm install  --registry=https://registry.npmmirror.com
RUN npm run build:prod

# production stage
FROM docker.cnb.cool/zzppjj/docker-images/nginx:alpine
COPY --from=build-stage /app/dist /usr/share/nginx/html

EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

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7.执行前端打包

docker build -t ocker.cnb.cool/zzppjj/docker-images/eladmin-web:v1 .

# 编写server端部署文件

configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: java-config
  namespace: apply03
data:
  DB_HOST: "192.168.51.49"
  DB_PORT: "13306"
  DB_PWD: "2025W#@qGhsd"
  DB_NAME: "eladmin"
  REDIS_HOST: "192.168.51.49"
  REDIS_PORT: "16379"
  REDIS_PWD: "fdsfd23d"
  REDIS_DB: "0"

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deplyment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: java-deployment
  namespace: apply03
  labels:
    app: java-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: java-app
  template:
    metadata:
      labels:
        app: java-app
    spec:
      containers:
      - name: java
        image: docker.cnb.cool/zzppjj/docker-images/eladmin-system:v3
        ports:
        - containerPort: 8000
        envFrom:
        - configMapRef:
            name: java-config
        resources:
          requests:
            memory: "512Mi"
            cpu: "100m"
          limits:
            memory: "1024Mi"
            cpu: "200m"

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svc.yaml

apiVersion: v1
kind: Service
metadata:
  name: java-service
  namespace: apply03
spec:
  selector:
    app: java-app
  ports:
    - protocol: TCP
      port: 8000
      targetPort: 8000
  type: ClusterIP

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执行部署

kubectl apply -f configmap.yaml -f deplyment.yaml -f svc.yaml

# 部署web端

configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: my.conf
  namespace: apply03
data:
  my.conf: |
    server
    {
        listen 10480;
        index index.html;
        root  /usr/share/nginx/html;  #dist上传的路径

        # 避免访问出现 404 错误
        location / {
          try_files $uri $uri/ @router;
          index  index.html;
        }

        location @router {
          rewrite ^.*$ /index.html last;
        }

        # 接口
        location /api {
          proxy_pass http://java-service:8000;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_set_header X-Forwarded-Port $server_port;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "upgrade";
        }

        # 授权接口
        location /auth {
          proxy_pass http://java-service:8000;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_set_header X-Forwarded-Port $server_port;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "upgrade";
        }

        # WebSocket 服务
        location /webSocket {
          proxy_redirect off;
          proxy_pass http://java-service:8000/webSocket;
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "upgrade";
          proxy_set_header Host $http_host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_connect_timeout 60s;
          proxy_read_timeout 86400s;
          proxy_send_timeout 60s;
        }

        # 头像
        location /avatar {
          proxy_pass http://java-service:8000;
        }

        # 文件
        location /file {
          proxy_pass http://java-service:8000;
        }
        }

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deply-web.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: eladmin-web
  labels:
    app: eladmin-web
  namespace: apply03
spec:
  replicas: 1
  selector:
    matchLabels:
      app: eladmin-web
  template:
    metadata:
      labels:
        app: eladmin-web
    spec:
      containers:
      - name: eladmin-web-container
        image: docker.cnb.cool/zzppjj/docker-images/eladmin-web:v2  # 如果使用具体版本请修改 tag
        ports:
        - containerPort: 10480
        resources:
          requests:
            memory: "256Mi"
            cpu: "100m"
          limits:
            memory: "512Mi"
            cpu: "200m"
        volumeMounts:
          - mountPath: /etc/nginx/conf.d/
            name: nginx-config
        livenessProbe:
          httpGet:
            path: /
            port: 10480
          initialDelaySeconds: 15
          periodSeconds: 20
        readinessProbe:
          httpGet:
            path: /
            port: 10480
          initialDelaySeconds: 5
          periodSeconds: 10
      volumes:
        - name: nginx-config
          configMap:
            name: my.conf
---
apiVersion: v1
kind: Service
metadata:
  name: eladmin-web-service
  namespace: apply03
spec:
  type: ClusterIP  # 如果使用云服务商，会创建外部负载均衡器
  selector:
    app: eladmin-web
  ports:
    - protocol: TCP
      port: 10081        # 外部访问端口
      targetPort: 10480 # 容器端口

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Ingress.yml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: java-ingress
  namespace: apply03
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /  # Nginx Ingress 专用注解
spec:
  ingressClassName: nginx  # 指定 Ingress 控制器类型
  rules:
  - host: eladmin.zzppjj.top
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: eladmin-web-service
            port:
              number: 10081

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执行部署

kubectl apply -f configmap.yml -f deply-web.yml -f ingress.yml

浏览器访问：http://eladmin.zzppjj.top

上次更新: 2025/02/22, 23:10:06

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