K8S发布JAVA项目

# k8s发布java项目

https://www.kubernetes.org.cn/deployment

# deployment

vim demoapp-deploy.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: demoapp-deploy
spec:
  replicas: 2
  selector:
    matchLabels:
      app: demoapp
  template:
    metadata:
      labels:
        app: demoapp
    spec:
      containers:
      - name: demoapp
        image: 192.168.0.180:5000/yds/demoyds:latest
        ports:
        - containerPort: 8080

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kubectl apply -f demoapp-deploy.yaml

查看pod的网络节点分布情况

kubectl get pod -o wide

NAME                              READY   STATUS    RESTARTS   AGE    IP             NODE    NOMINATED NODE   READINESS GATES
demoapp-deploy-5c9bb97649-jcdlq   1/1     Running   0          4m8s   10.244.2.210   node2   <none>           <none>
demoapp-deploy-5c9bb97649-shm9t   1/1     Running   0          4m8s   10.244.1.197   node1   <none>           <none>

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curl 10.244.2.210:8080/demo-api/hi
{"code":"0","msg":"ok","data":"hey,guys!"}

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# service

vim demoapp-service.yaml

apiVersion: v1
kind: Service
metadata:
  name: demoapp-svc
  namespace: default
spec:
  selector:
    app: demoapp
  type: NodePort
  ports:
  - port: 8080
    targetPort: 8080
    nodePort: 30010

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kubectl apply -f demoapp-service.yaml

查看service

kubectl get svc

NAME          TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)          AGE
demoapp-svc   NodePort    10.1.232.249   <none>        8080:30010/TCP   5s

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此时网络已经对外开放了30010端口，映射到pod中8080的端口，所以外网可以访问。

# 卸载

kubectl delete -f demoapp-service.yaml

# pv & pvc

安装nfs
```
yum install -y nfs-utils
```
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目录
```
mkdir /home/nfs/data -pv
```
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nfs配置

vim /etc/exports

/home/nfs/data *(rw,sync,no_root_squash)

开机启动

systemctl enable rpcbind.service
systemctl enable nfs-server.service

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启动

systemctl start rpcbind.service & systemctl start nfs-server.service

安装pvc

vim demoapp-pvc.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: demoapp-pv
  labels:
    name: demoapp-pv
spec:
  nfs:
    path: /home/nfs/data
    server: node0  ## 节点名，这里用的是master1,和hosts文件中是一致的
  accessModes: ["ReadWriteMany","ReadWriteOnce"]
  capacity:
    storage: 1Gi

---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: demoapp-pvc
  namespace: default
spec:
  accessModes: ["ReadWriteMany","ReadWriteOnce"]
  resources:
    requests:
      storage: 1Gi

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kubectl apply -f demoapp-pvc.yaml

修改deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: demoapp-deploy
spec:
  replicas: 3
  selector:
    matchLabels:
      app: demoapp
  template:
    metadata:
      labels:
        app: demoapp
    spec:
      volumes:   ## 加入volumes的定义，下文volumeMounts会引用
      - name: log
        persistentVolumeClaim:
          claimName: demoapp-pvc
      containers:
      - name: demoapp
        image: 192.168.0.180:5000/yds/demoyds:latest
        volumeMounts:  
        - name: log  ## 引用volumes
          mountPath: /data/app/log ## 将容器中日志的路径映射到pvc的路径中
        ports:
        - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: demoapp-svc
  namespace: default
spec:
  selector:
    app: demoapp
  type: NodePort
  ports:
  - port: 8080
    targetPort: 8080
    nodePort: 30010

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启动成功后，pvc指定的路径/home/nfs/data中会输出容器的日志

# helm发布java

创建模板

helm create [charName]

示例

helm create demo-app-char

template目录下不用的东西删除掉，只留deploy.yaml,service.yaml,_help

修改value.yaml

image.repository: 镜像名

image.tag: "latest"

service.type: NodePort
service.port: 端口号
nodePort: 30083

serviceAccount.create: false

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修改template/service.yaml

spec.ports.nodePort: {{ .Values.service.nodePort }}

修改template/deploy.yaml

containerPort: 8080 ## 容器的端口号

## 这三个节点删除
livenessProbe：
readinessProbe： 
serviceAccountName:

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# 代码

.drone.yaml

## 使用helm3的方式启动容器..
- name: deploy-by-helm3-main
  pull: if-not-exists
  image: pelotech/drone-helm3
  settings:
    helm_command: upgrade
    chart: ./spring-boot-chart
    release: spring-boot-release
    namespace: myapp-main
    ## 增加分支，记得先去服务器建个目录 mkdir /home/nfs/data/myapp-main -pv
    ## --set mage.nodePort=30010
    values: image.repository=192.168.0.180:5000/yds/demoyds,image.nodePort=30010,volumePath=/home/nfs/data/myapp-main,replicaCount=2
    kube_api_server: https://192.168.0.180:6443
    kube_token: eyJhbGciOiJSUzI1NiIsImtpZCI6ImE3QUhLQ2NyT0VIdGZ4UW5kMEc1UVZtVW9zODNwR3BsczRhdWdmZVdtV1kifQ.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.e52gYNdop1b2bodFTxSzod18kRlMd3kIrCnKEfxwDGZH8mTdwx_CfBkfh1zu1ADf-MkDSizYoDDi6PEu2qKdq2P3Zr4Dh4BLTFVGftOq-iX5dJhzKDgqOl_Ic6DgdA4uH9yDkolYQIBOVHpVBQaHcb5Tjdy3S4JwydYvU3afdzlwwTUyCF8nGWpeaVzTHSJILJ1ZXm1IxFzL2xbDVYxlF_NsdxexvwdEh9HFLVL5OMd7QItq3K3Jsoh0eM_n4rEedcp8ZFVZdGLPQnCj1Jmuxxh5kirv1mISEsM2wHa0IwnlbQBt7Ijqbt8pza43dGcRyT8At2o7Ko5RdoPL6nDOuw
    kube_certificate: 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
    kube_service_account: dashboard-admin
  when:
    branch:
      - main

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#JAVA #K8S

上次更新: 2024/09/30, 01:34:11

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