七、SpringCloud 项目迁移至 K8s-EW帮帮网

七、SpringCloud 项目迁移至 K8s

1、环境准备

1.1 集群规划

主机名称	物理IP	系统	资源配置	说明
k8s-master01	192.168.200.50	Rocky9.4	2C4C40G	Master节点
k8s-node01	192.168.200.51	Rocky9.4	2C4C40G	Node01节点
k8s-node02	192.168.200.52	Rocky9.4	2C4C40G	Node02节点
harbor	192.168.200.53	Rocky9.4	2C4C40G	harbor&docker节点

1.2 SpringCloud 项目架构及迁移需求分析

现有一共 SpringCloud 项目需要迁移至K8s，该项目采用 Eureka 注册中心，并采用前后端分离框架。

该项目首页域名为 demo.test.com，域名的主路径 / 转发项目的前端，路径 receiveapi 转发至网关服务，其他服务注册至 Eureka ，由网关服务进行流量转发。

2、迁移 Eureka 集群

2.1 构建及容器化

# 下载代码：
[root@habor ~]# git clone https://gitee.com/dukuan/demo-eureka.git

# 创建java缓存目录并挂载进容器里
[root@habor ~]# mkdir -p /data/m2

# 创建容器
[root@habor ~]# docker run --ulimit nofile=65535:65535 -it --rm -v `pwd`/demo-eureka:/mnt/ -v /data/m2/:/root/.m2 crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/maven:3.5.3 bash

# 执行构建：
root@ac8d29c13770:/# cd /mnt/
root@ac8d29c13770:/mnt# ls
README.en.md  README.md  pom.xml  src
root@ac8d29c13770:/mnt# mvn clean package
....
[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:49 min
[INFO] Finished at: 2025-06-21T08:07:22Z
[INFO] ------------------------------------------------------------------------

# 构建完成后，查看构建产物：
root@ac8d29c13770:/mnt# ls target/*.jar
target/spring-cloud-eureka-0.0.1-SNAPSHOT.jar

# 编写dockerfile文件
[root@habor ~]# cd demo-eureka/
[root@habor demo-eureka]# vim Dockerfile
[root@habor demo-eureka]# cat Dockerfile 
FROM crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/jdk:8u211-jmap
WORKDIR /home/tomcat
COPY target/*.jar ./
CMD java -jar ./*.jar

# 制作镜像
[root@habor demo-eureka]# docker build -t crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-eureka:v1 .

# 推送镜像到镜像仓库
[root@habor demo-eureka]# docker push crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-eureka:v1

2.2 部署至 K8s

# StatefulSet 部署 Eureka 集群
[root@k8s-master01 ~]# vim demo-eureka.yaml 
[root@k8s-master01 ~]# cat demo-eureka.yaml 
apiVersion: apps/v1
kind: StatefulSet
metadata:
  labels:
    app: demo-eureka
  name: demo-eureka
  annotations:
    app: demo-eureka
spec:
  replicas: 3
  serviceName: demo-eureka
  podManagementPolicy: Parallel
  selector:
    matchLabels:
      app: demo-eureka
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: demo-eureka
      annotations:
        app: demo-eureka
    spec:
      containers:
      - image: crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-eureka:v1
        name: demo-eureka
        ports:
          - name: http-web
            containerPort: 8761
            protocol: TCP
        env:
          - name: SPRING_PROFILES_ACTIVE
            value: k8s
          - name: SERVER_PORT
            value: '8761'
          - name: EUREKA_SERVER_ADDRESS
            value: >-
              http://demo-eureka-0.demo-eureka:8761/eureka/,http://demo-eureka-1.demo-eureka:8761/eureka/,http://demo-eureka-2.demo-eureka:8761/eureka/
        resources: 
          limits:
            cpu: '1'
            memory: 1Gi
          requests:
            cpu: 100m
            memory: 128Mi
        imagePullPolicy: IfNotPresent
      restartPolicy: Always

[root@k8s-master01 ~]# kubectl create -f demo-eureka.yaml 
[root@k8s-master01 ~]# kubectl get po
NAME            READY   STATUS    RESTARTS   AGE
demo-eureka-0   1/1     Running   0          64s
demo-eureka-1   1/1     Running   0          64s
demo-eureka-2   1/1     Running   0          64s

2.3 创建通信Service

# 用于集群通讯的 Service 文件
[root@k8s-master01 ~]# vim demo-eureka-svc.yaml 
[root@k8s-master01 ~]# cat demo-eureka-svc.yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    app: demo-eureka
  name: demo-eureka
spec:
  ports:
    - name: http-web
      protocol: TCP
      port: 8761
      targetPort: 8761
  clusterIP: None
  selector:
    app: demo-eureka
  type: ClusterIP

# 用于图形界面的 Service 文件
[root@k8s-master01 ~]# vim eureka-svc.yaml
[root@k8s-master01 ~]# cat eureka-svc.yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    app: eureka
  name: eureka
spec:
  ports:
    - name: http-web
      protocol: TCP
      port: 8761
      targetPort: 8761
  selector:
    app: demo-eureka
  type: NodePort

[root@k8s-master01 ~]# kubectl create -f demo-eureka-svc.yaml 
[root@k8s-master01 ~]# kubectl create -f eureka-svc.yaml 

[root@k8s-master01 ~]# kubectl get svc
NAME          TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
demo-eureka   ClusterIP   None            <none>        8761/TCP         10s
eureka        NodePort    10.111.57.249   <none>        8761:31394/TCP   5s

访问 web 界面（任意节点:31394）

在这里插入图片描述

3、迁移网关服务

3.1 构建及容器化

# 下载代码：
[root@habor ~]# git clone https://gitee.com/dukuan/demo-receive.git

# 创建容器
[root@habor ~]# docker run --ulimit nofile=65535:65535 -it --rm -v `pwd`/demo-receive:/mnt/ -v /data/m2/:/root/.m2 crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/maven:3.5.3 bash

# 执行构建：
root@bb5a4bf9745a:/# cd /mnt/
root@bb5a4bf9745a:/mnt# mvn clean package
....
[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17.845 s
[INFO] Finished at: 2025-06-21T09:55:56Z
[INFO] ------------------------------------------------------------------------


# 构建完成后，查看构建产物：
root@bb5a4bf9745a:/mnt# ls target/*.jar
target/receive-0.0.1-SNAPSHOT.jar

# 编写dockerfile文件
[root@habor demo-receive]# vim Dockerfile
[root@habor demo-receive]# cat Dockerfile 
FROM crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/jdk:8u211-jmap
WORKDIR /home/tomcat
COPY target/*.jar ./
CMD java -jar ./*.jar

# 制作镜像
[root@habor demo-receive]# docker build -t crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-receive:v1 .

# 推送镜像到镜像仓库
[root@habor demo-receive]# docker push crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-receive:v1

3.2 部署至 K8s

# 部署文件
[root@k8s-master01 ~]# vim demo-receive.yaml 
[root@k8s-master01 ~]# cat demo-receive.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: demo-receive
  name: demo-receive
  annotations:
    app: demo-receive
spec:
  replicas: 2
  selector:
    matchLabels:
      app: demo-receive
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: demo-receive
      annotations:
        app: demo-receive
    spec:
      containers:
      - image: crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-receive:v1
        name: demo-receive
        ports:
          - name: http-web
            containerPort: 8080
            protocol: TCP
        env:
          - name: SPRING_PROFILES_ACTIVE
            value: k8s
          - name: SERVER_PORT
            value: '8080'
          - name: EUREKA_SERVER_ADDRESS
            value: >-
              http://demo-eureka-0.demo-eureka:8761/eureka/,http://demo-eureka-1.demo-eureka:8761/eureka/,http://demo-eureka-2.demo-eureka:8761/eureka/
        resources: 
          limits:
            cpu: '1'
            memory: 1Gi
          requests:
            cpu: 100m
            memory: 128Mi
        lifecycle: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        imagePullPolicy: IfNotPresent
      restartPolicy: Always
      
[root@k8s-master01 ~]# kubectl create -f demo-receive.yaml 
[root@k8s-master01 ~]# kubectl get po
NAME                           READY   STATUS    RESTARTS   AGE
....
demo-receive-85dfc76bc-9d9kn   1/1     Running   0          60s
demo-receive-85dfc76bc-hwfgg   1/1     Running   0          60s

3.3 创建Service

# 用于集群通讯的 Service 文件
[root@k8s-master01 ~]# vim demo-receive-svc.yaml 
[root@k8s-master01 ~]# cat demo-receive-svc.yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    app: demo-receive
  name: demo-receive
spec:
  ports:
    - name: http-web
      protocol: TCP
      port: 8080
      targetPort: 8080
  selector:
    app: demo-receive

[root@k8s-master01 ~]# kubectl create -f demo-receive-svc.yaml 

[root@k8s-master01 ~]# kubectl get svc
NAME           TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
....
demo-receive   ClusterIP   10.99.146.126   <none>        8080/TCP         16s
....

3.4 创建Ingress

[root@k8s-master01 ~]# cat demo-receive-ingress.yaml 
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: demo-receive
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /$2
spec:
  ingressClassName: 'nginx'
  rules:
    - host: demo.test.com
      http:
        paths:
          - path: /receiveapi(/|$)(.*)
            pathType: ImplementationSpecific
            backend:
              service:
                name: demo-receive
                port:
                  number: 8080

[root@k8s-master01 ~]# kubectl create -f demo-receive-ingress.yaml
[root@k8s-master01 ~]# kubectl get ingress
NAME           CLASS   HOSTS           ADDRESS          PORTS   AGE
demo-receive   nginx   demo.test.com   192.168.200.52   80      17m

4、迁移其他 springboot 服务

4.1 构建及容器化

# 下载代码：
[root@habor ~]# git clone https://gitee.com/dukuan/demo-handler.git

# 创建容器
[root@habor ~]# docker run --ulimit nofile=65535:65535 -it --rm -v `pwd`/demo-handler:/mnt/ -v /data/m2/:/root/.m2 crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/maven:3.5.3 bash
root@aa9aa1f3f326:/# cd /mnt/
root@aa9aa1f3f326:/mnt# ls
pom.xml  src
root@aa9aa1f3f326:/mnt# mvn clean package
....
[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 21.673 s
[INFO] Finished at: 2025-06-21T14:28:27Z
[INFO] ------------------------------------------------------------------------


# 构建完成后，查看构建产物：
root@aa9aa1f3f326:/mnt# ls target/*.jar
target/handler-0.0.1-SNAPSHOT.jar

# 编写dockerfile文件
[root@habor ~]# cd demo-handler/
[root@habor demo-handler]# vim Dockerfile 
[root@habor demo-handler]# cat Dockerfile 
FROM crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/jdk:8u211-jmap
WORKDIR /home/tomcat
COPY target/*.jar ./
CMD java -jar ./*.jar

# 制作镜像
[root@habor demo-handler]# docker build -t crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-handler:v1 .

# 推送镜像到镜像仓库
[root@habor demo-handler]# docker push crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-handler:v1

4.2 部署至 K8s

# 部署文件：
[root@k8s-master01 ~]# vim demo-handler.yaml 
[root@k8s-master01 ~]# cat demo-handler.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: demo-handler
  name: demo-handler
  annotations:
    app: demo-handler
spec:
  replicas: 2
  selector:
    matchLabels:
      app: demo-handler
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: demo-handler
      annotations:
        app: demo-handler
    spec:
      containers:
      - image: crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-handler:v1
        name: demo-handler
        ports:
          - name: http-web
            containerPort: 8080
            protocol: TCP
        env:
          - name: SPRING_PROFILES_ACTIVE
            value: k8s
          - name: SERVER_PORT
            value: '8080'
          - name: EUREKA_SERVER_ADDRESS
            value: >-
              http://demo-eureka-0.demo-eureka:8761/eureka/,http://demo-eureka-1.demo-eureka:8761/eureka/,http://demo-eureka-2.demo-eureka:8761/eureka/
        resources: 
          limits:
            cpu: '1'
            memory: 1Gi
          requests:
            cpu: 100m
            memory: 128Mi
        lifecycle: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        imagePullPolicy: IfNotPresent
      restartPolicy: Always

[root@k8s-master01 ~]# kubectl create -f demo-handler.yaml
[root@k8s-master01 ~]# kubectl get po
NAME                           READY   STATUS    RESTARTS   AGE
....
demo-handler-c975bcc7f-647j4   1/1     Running   0          86s
....

5、迁移前端服务

5.1 构建及容器化

# 下载代码：
[root@habor ~]# git clone https://gitee.com/dukuan/demo-ui.git

# 创建容器
[root@habor ~]# docker run --ulimit nofile=65535:65535 -it --rm -v `pwd`/demo-ui:/mnt/ crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/node:16.17.0-apline-cnpm sh
/ # cd /mnt/
/mnt # ls
Dockerfile      index.html      public          vite.config.js
README.md       package.json    src

# 执行构建
/mnt # npm install --registry=https://registry.npmmirror.com && npm run build
....
> demo-ui@0.0.0 build
> vite build

vite v5.2.0 building for production...
✓ 58 modules transformed.
dist/index.html                  0.46 kB │ gzip:  0.29 kB
dist/assets/index-BYh5Cz0w.css   1.27 kB │ gzip:  0.65 kB
dist/assets/index-BZep8zp5.js   83.61 kB │ gzip: 33.25 kB
✓ built in 2.49s


# 构建完成后，查看构建产物：
/mnt # ls dist/
assets      index.html  vite.svg

# 编写dockerfile文件
[root@habor ~]# cd demo-ui/
[root@habor demo-ui]# cat Dockerfile 
FROM crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/nginx:1.22.1-alpine3.17
COPY dist /usr/share/nginx/html

# 制作镜像
[root@habor demo-ui]# docker build -t crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-ui:v1 .

# 推送镜像到镜像仓库
[root@habor demo-ui]# docker push crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-ui:v1

5.2 部署至 K8s

[root@k8s-master01 ~]# vim demo-ui.yaml 
[root@k8s-master01 ~]# cat demo-ui.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: demo-ui
  name: demo-ui
  annotations:
    app: demo-ui
spec:
  replicas: 1
  selector:
    matchLabels:
      app: demo-ui
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: demo-ui
      annotations:
        app: demo-ui
    spec:
      containers:
      - image: crpi-q1nb2n896zwtcdts.cn-beijing.personal.cr.aliyuncs.com/ywb01/demo-ui:v1
        name: demo-ui
        ports:
          - name: http-web
            containerPort: 80
            protocol: TCP
        resources: 
          limits:
            cpu: '1'
            memory: 1Gi
          requests:
            cpu: 100m
            memory: 128Mi
        lifecycle: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        imagePullPolicy: IfNotPresent
      restartPolicy: Always

[root@k8s-master01 ~]# kubectl create -f demo-ui.yaml 
[root@k8s-master01 ~]# kubectl get po
NAME                           READY   STATUS    RESTARTS   AGE
....
demo-ui-748589dcfb-vnnj5       1/1     Running   0          52s

5.3 创建通信Service

[root@k8s-master01 ~]# vim demo-ui-svc.yaml 
[root@k8s-master01 ~]# cat demo-ui-svc.yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    app: demo-ui
  name: demo-ui
spec:
  ports:
    - name: http-web
      protocol: TCP
      port: 80
      targetPort: 80
  selector:
    app: demo-ui
    
[root@k8s-master01 ~]# kubectl create -f demo-ui-svc.yaml 
[root@k8s-master01 ~]# kubectl get svc
NAME           TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
....
demo-ui        ClusterIP   10.98.14.85     <none>        80/TCP           6s

5.4 创建Ingress

[root@k8s-master01 ~]# vim demo-ui-ingress.yaml 
[root@k8s-master01 ~]# cat demo-ui-ingress.yaml 
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: demo-ui
spec:
  ingressClassName: 'nginx'
  rules:
    - host: demo.test.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: demo-ui
                port:
                  number: 80

       
[root@k8s-master01 ~]# kubectl create -f demo-ui-ingress.yaml 
[root@k8s-master01 ~]# kubectl get ingress
NAME           CLASS   HOSTS           ADDRESS          PORTS   AGE
demo-receive   nginx   demo.test.com   192.168.200.52   80      17m
demo-ui        nginx   demo.test.com   192.168.200.52   80      29m

web访问

在这里插入图片描述

此博客来源于：https://edu.51cto.com/lecturer/11062970.html

七、SpringCloud 项目迁移至 K8s

七、SpringCloud 项目迁移至 K8s

文章目录

1、环境准备

1.1 集群规划

1.2 SpringCloud 项目架构及迁移需求分析

2、迁移 Eureka 集群

2.1 构建及容器化

2.2 部署至 K8s

2.3 创建通信Service

3、迁移网关服务

3.1 构建及容器化

3.2 部署至 K8s

3.3 创建Service

3.4 创建Ingress

4、迁移其他 springboot 服务

4.1 构建及容器化

4.2 部署至 K8s

5、迁移前端服务

5.1 构建及容器化

5.2 部署至 K8s

5.3 创建通信Service

5.4 创建Ingress

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