K8s部署springboot

末蓝、 2022-12-09 05:00 265阅读 0赞

# 1 Docker部署SpringBoot #

## 1.1 部署 ##

(1) springboot项目概述  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center]

(2) 打成jar包

(3) 上传至Docker服务器，制作Dockerfile

FROM java:8
    ADD springboot-web-1.0-SNAPSHOT.jar  app.jar
    RUN /bin/cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
    RUN echo "Asia/Shanghai" > /etc/timezone
    RUN bash -c 'touch /app.jar'
    EXPOSE 9000
    ENTRYPOINT ["java","-jar","/app.jar"]

(4) 制作镜像

docker build -f Dockerfile -t 192.168.38.100/library/springboot:v1.0 .

(5) 运行容器

docker run -d -p 9000:9000 --name springboot  192.168.38.100/library/springboot:v1.0

(6) 访问  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 1]

## 1.2 缺点 ##

(1) 如果当前springboot容器挂了或Dokcer服务器挂了当前项目无法访问。
    (2) 如果把当前项目部署到多台Docker服务器上，重复步骤太多，又要手动实现负载均衡。

# 2 K8s 部署SpringBoot #

## 2.1 环境概述 ##

192.168.38.50 master
    192.168.38.51 node1
    192.168.38.52 node2
    192.168.38.100 harbor/nfs(数据持久卷,搭建过程略)

## 2.2 nfs-springboot-pv.yaml ##

apiVersion: v1
    kind: PersistentVolume
    metadata:
      name: nfs-springboot-pv
    spec:
      capacity:
        storage: 5Gi
      accessModes:
        - ReadWriteMany
      persistentVolumeReclaimPolicy: Retain
      nfs:
        path: "/usr/local/kubernetes/volumes/logs/"
        server: 192.168.38.100
        readOnly: false

#创建pv
    kubectl apply -f nfs-springboot-pv.yaml
    #查看
    kubectl get pv

![在这里插入图片描述][20200922012632500.png_pic_center]

## 2.3 springboot-pvc.yaml ##

vim springboot-pvc.yaml
    
    apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
      name: nfs-pvc-springboot
    spec:
      accessModes:
        - ReadWriteMany
      resources:
        requests:
          storage: 5Gi

kubectl apply -f springboot-pvc.yaml

![在这里插入图片描述][20200922012701362.png_pic_center]

## 2.4 springboot-deployment.yaml ##

vim springboot-deployment.yaml
    
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      labels:
        app: springboot
      name: springboot
    spec:
      replicas: 1
      selector:
        matchLabels:
          app: springboot
      template:
        metadata:
          labels:
            app: springboot
        spec:
          containers:
            - name: springboot
              image: 192.168.38.100/library/springboot:v1.0
              imagePullPolicy: IfNotPresent
              volumeMounts:
                - mountPath: /logs
                  name: springboot-volumes
          volumes:
            - name: springboot-volumes
              persistentVolumeClaim:
                claimName: nfs-pvc-springboot
    
    ---
    apiVersion: v1
    kind: Service
    metadata:
      labels:
        app: springboot
      name: springboot
    spec:
      ports:
        - port: 9000
          protocol: TCP
          targetPort: 9000
      selector:
        app: springboot
      type: ClusterIP
    
    ---
    apiVersion: networking.k8s.io/v1beta1
    kind: Ingress
    metadata:
      name: springboot
    spec:
      rules:
        - host: rosh.springboot.com
          http:
            paths:
              - backend:
                  serviceName: springboot
                  servicePort: 9000

kubectl apply -f springboot-deployment.yaml 
    #查看pod，svc
    kubectl get pod
    kubectl get svc

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 2]

## 2.5 通过ingress访问 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 4]  
查看nfs日志挂载  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 5]

# 3 实验 #

## 3.1 当部署服务器挂了 ##

(1) 查看运行节点  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 6]  
(2) 关闭node1节点  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 7]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 8]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 9]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 10]

## 3.2 动态扩容 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 11]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 12]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 13]  
访问时发现已经是负载均衡了：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 14]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 15]  
多访问几次查看挂载日志：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 16]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221123/19f7c3b6160646528ec5ddb2edd6c71c.png
[20200922012632500.png_pic_center]: /images/20221123/11c6ea0d5f28429ea564350a608107ec.png
[20200922012701362.png_pic_center]: /images/20221123/cf8f705e742d4d3eb0b496f7ac5f584f.png
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