minikube+docker desktop搭建k8s环境部署SpringBoot应用(仅仅是玩玩，端口映射很麻烦)

1)先运行起来DockerDesktop

2)下载地址

kubernetes/minikube: Run Kubernetes locally

3)创建2c4g的k8s集群

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minikube start --force --driver=docker --cpus=2 --memory=4096mb --base-image=registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:v0.0.44

4)检查k8s集群状态

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minikube.exe status

minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured

5)Dockerfile

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FROM maven:3.9.9-eclipse-temurin-17 AS build
WORKDIR /build
COPY pom.xml .
COPY settings.xml /root/.m2/settings.xml
RUN mvn -s /root/.m2/settings.xml -B -DskipTests dependency:go-offline
COPY src ./src
RUN mvn -s /root/.m2/settings.xml -B -DskipTests package

FROM eclipse-temurin:17-jre
WORKDIR /app
COPY --from=build /build/target/netty-game-server-0.0.1-SNAPSHOT.jar app.jar
EXPOSE 7000
ENTRYPOINT ["java", "-jar", "/app/app.jar"]

6)k8s下编写

deployment.ymal

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apiVersion: apps/v1
kind: Deployment
metadata:
  name: netty-game-server
  labels:
    app: netty-game-server
spec:
  replicas: 1
  selector:
    matchLabels:
      app: netty-game-server
  template:
    metadata:
      labels:
        app: netty-game-server
    spec:
      containers:
        - name: netty-game-server
          image: netty-game-server:0.0.1
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 7000
              protocol: TCP
          readinessProbe:
            tcpSocket:
              port: 7000
            initialDelaySeconds: 5
            periodSeconds: 10
          livenessProbe:
            tcpSocket:
              port: 7000
            initialDelaySeconds: 15
            periodSeconds: 20

service.yaml

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apiVersion: v1
kind: Service
metadata:
  name: netty-game-server
spec:
  type: NodePort
  selector:
    app: netty-game-server
  ports:
    - name: tcp-game
      protocol: TCP
      port: 7000
      targetPort: 7000
      nodePort: 30700

7)部署

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minikube image build -t netty-game-server:0.0.1 .
kubectl apply -f k8s/deployment.yaml
kubectl apply -f k8s/service.yaml
kubectl get pods -l app=netty-game-server
kubectl get svc netty-game-server

8)打开UI界面查看当前minikube中运行了哪些应用

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minikube dashboard

9)查看日志

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PS C:\Users\Admin\Desktop> kubectl logs -f deploy/netty-game-server

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/

 :: Spring Boot ::                (v3.3.5)

2026-04-01T14:09:26.032Z  INFO 1 --- [netty-game-server] [           main] c.e.g.NettyGameServerApplication         : Starting NettyGameServerApplication v0.0.1-SNAPSHOT using Java 17.0.18 with PID 1 (/app/app.jar started by root in /app)
2026-04-01T14:09:26.035Z  INFO 1 --- [netty-game-server] [           main] c.e.g.NettyGameServerApplication         : No active profile set, falling back to 1 default profile: "default"
2026-04-01T14:09:26.847Z  INFO 1 --- [netty-game-server] [           main] c.e.g.NettyGameServerApplication         : Started NettyGameServerApplication in 1.8 seconds (process running for 2.495)
2026-04-01T14:09:26.994Z  INFO 1 --- [netty-game-server] [           main] com.example.gameserver.NettyTcpServer    : Netty TCP game server started on port 7000