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服务部署与迁移示例

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一、服务部署与迁移示例

1、简单的部署 wordpress

通过 mysql 与 wordpress 镜像包部署持久化的 wordpress 博客网站

1.1、创建 PV

cat lnmp-pv.yaml apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv001 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-1 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv002 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-2 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv003 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-3 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv004 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-4 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv005 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-5 server: 192.168.1.169

1.2、部署 mysql

cat wp-mysql.yaml apiVersion: v1 kind: Service metadata: name: mysql-svc spec: type: ClusterIP ports: - port: 3306 targetPort: 3306 selector: app: wp-mysql --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mysql-pvc labels: app: wp-mysql spec: accessModes: - ReadWriteMany storageClassName: "nfs" resources: requests: storage: 2Gi --- apiVersion: apps/v1 kind: Deployment metadata: name: wp-mysql spec: selector: matchLabels: app: wp-mysql replicas: 1 template: metadata: labels: app: wp-mysql spec: containers: - name: wp-mysql image: docker.io/mysql:5.7 imagePullPolicy: IfNotPresent ports: - containerPort: 3306 env: - name: MYSQL_ROOT_PASSWORD value: "123456" - name: MYSQL_DATABASE value: "wordpress" - name: MYSQL_USER value: "wordpress" - name: MYSQL_PASSWORD value: "wordpress" volumeMounts: - name: mysql mountPath: /var/lib/mysql volumes: - name: mysql persistentVolumeClaim: claimName: mysql-pvc

1.3、部署 wordpress

cat wp-wordpress apiVersion: v1 kind: Service metadata: name: wordpress spec: type: NodePort ports: - port: 80 nodePort: 30001 selector: app: wordpress --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: wordpress-pvc labels: app: wordpress spec: accessModes: - ReadWriteMany storageClassName: "nfs" resources: requests: storage: 2Gi --- apiVersion: apps/v1 kind: Deployment metadata: name: wp-wordpress spec: selector: matchLabels: app: wordpress replicas: 1 template: metadata: labels: app: wordpress spec: containers: - name: wp-wordpress image: docker.io/wordpress imagePullPolicy: IfNotPresent ports: - containerPort: 80 env: - name: WORDPRESS_DB_HOST value: "mysql-svc" - name: WORDPRESS_DB_USER value: "wordpress" - name: WORDPRESS_DB_PASSWORD value: "wordpress" volumeMounts: - name: wordpress mountPath: /var/www/html volumes: - name: wordpress persistentVolumeClaim: claimName: wordpress-pvc

2、部署 LNMP 环境

通过部署 LNMP 环境 部署持久化的 wordpress

2.1、部署 PV

cat lnmp-pv.yaml apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv001 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-1 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv002 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-2 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv003 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-3 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv004 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-4 server: 192.168.1.169 --- apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv005 spec: capacity: storage: 2Gi accessModes: - ReadWriteMany persistentVolumeReclaimPolicy: Retain storageClassName: nfs nfs: path: /nfs-5 server: 192.168.1.169

2.2、部署 nginx + php

cat lnmp-nginx-php.yaml apiVersion: v1 kind: Service metadata: name: nginx-php-svc labels: app: lnmp-nginx-php spec: type: NodePort ports: - port: 80 nodePort: 30001 selector: app: lnmp-nginx-php --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: lnmp-web-pvc labels: app: wordpress spec: accessModes: - ReadWriteMany storageClassName: "nfs" resources: requests: storage: 2Gi --- apiVersion: apps/v1 kind: Deployment metadata: name: lnmp-nginx-php spec: selector: matchLabels: app: lnmp-nginx-php replicas: 1 template: metadata: labels: app: lnmp-nginx-php spec: containers: - name: lnmp-nginx image: richarvey/nginx-php-fpm imagePullPolicy: IfNotPresent ports: - containerPort: 80 - containerPort: 9000 volumeMounts: - name: nginx-data mountPath: /var/www/html/ volumes: - name: nginx-data persistentVolumeClaim: claimName: lnmp-web-pvc

2.3、部署 MYSQL

cat lnmp-mysql.yaml apiVersion: v1 kind: Service metadata: name: lnmp-mysql-svc spec: type: ClusterIP ports: - port: 3306 targetPort: 3306 selector: app: lnmp-mysql --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: lnmp-mysql-pvc labels: app: lnmp-mysql spec: accessModes: - ReadWriteMany storageClassName: "nfs" resources: requests: storage: 2Gi --- apiVersion: apps/v1 kind: Deployment metadata: name: lnmp-mysql spec: selector: matchLabels: app: lnmp-mysql replicas: 1 template: metadata: labels: app: lnmp-mysql spec: containers: - name: lnmp-mysql image: docker.io/mysql:5.7 imagePullPolicy: IfNotPresent ports: - containerPort: 3306 env: - name: MYSQL_ROOT_PASSWORD value: "123456" - name: MYSQL_DATABASE value: "wordpress" - name: MYSQL_USER value: "wordpress" - name: MYSQL_PASSWORD value: "wordpress" volumeMounts: - name: mysql mountPath: /var/lib/mysql volumes: - name: mysql persistentVolumeClaim: claimName: lnmp-mysql-pvc

2.4、部署 wordpress

下载 wordpress 的安装包 wordpress官网:https://cn.wordpress.org 将解压后的 wordpress 目录内的所有的内容 上传/复制/移动 到 /nfs-x 目录内 打开浏览器,输入 IP+端口 回车后即可看到如下 wordpress 的安装界面

点击 “现在就开始”

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输入我们在 lnmp-mysql.yaml 文件内定义的 用户名、密码、数据库名、以及我们的 mysql 的 svc 的名称

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如果数据库信息填写正确,点击 “提交” 后可以看到如下提示,我们点击 “现在安装”

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设置我们站点的相关信息

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3、springboot-web

​ 当前,Spring毫无疑问已经成为java后台对象管理标准框架,除了通过IOC能够管理我们的自定义对象的生命周期之外还提供了众多功能繁复的可配置功能模块。但同时带来了复杂的配置项,这对初学者而言简直是一种灾难。于是SpringBoot应运而生,Springboot的出现大大简化了配置,主要表现在消除了web.xml和依赖注入配置的整合,处处遵循规约大于配置的思想,将初学者在繁杂的配置项中解放出来,专注于业务的实现,而不需要去关注太底层的实现。

cat dockerfile FROM openjdk:8-jdk COPY target/springboot-web-demo-1.0-SNAPSHOT.jar /springboot-web.jar ENTRYPOINT ["java", "-jar", "/springboot-web.jar"] docker build -t spring-web:v1 . docker tag www.zutuanxue.com/library/spring-web:v1 docker tag spring-web:v1 www.zutuanxue.com/library/spring-web:v1 cat spring-web.yaml apiVersion: v1 kind: Service metadata: name: spring-web-svc spec: type: NodePort ports: - port: 8181 targetPort: 8080 nodePort: 30600 selector: app: spring-web --- apiVersion: apps/v1 kind: Deployment metadata: name: spring-web spec: selector: matchLabels: app: spring-web replicas: 3 template: metadata: labels: app: spring-web spec: containers: - name: spring-web image: www.zutuanxue.com/library/spring-web:v1 imagePullPolicy: IfNotPresent ports: - containerPort: 8080 kubectl apply -f spring-web.yaml kubectl get pod kubectl get svc 打开浏览器输入 IP:30600/hello?name=zutuanxue

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4、JAVA

cat dockerfile FROM tomcat COPY jspdemo_war.war /usr/local/tomcat/webapps/jspdemo_war.war ENTRYPOINT ["catalina.sh","run"] cat tomcat-java.yaml apiVersion: v1 kind: Service metadata: name: tomcat-java-svc spec: type: NodePort ports: - port: 8282 targetPort: 8080 nodePort: 30700 selector: app: tomcat-java --- apiVersion: apps/v1 kind: Deployment metadata: name: tomcat-java spec: selector: matchLabels: app: tomcat-java replicas: 3 template: metadata: labels: app: tomcat-java spec: containers: - name: tomcat-java image: www.zutuanxue.com/library/tomcat-java:v1 imagePullPolicy: IfNotPresent ports: - containerPort: 8080 打开浏览器进入链接 http://IP:30700/jspdemo_war (项目名) 用户名与密码为:lisi

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