打包docker镜像推送到远程服务器并部署到k8s的方法步骤

目录

• 1、Dockerfile
• 2、pom配置
• 3、镜像推送
• 4、k8s部署

# 指定jdk环境版本，基于java8创建镜像
FROM java:8
# 挂载临时目录
VOLUME /tmp
# 添加指定jar包到容器《此处为项目打包产生的jar包全名》
ADD practice-job-0.0.1-SNAPSHOT.jar /practice-job.jar
# 容器向外暴露的端口号《指该项目运行所占用的的端口号》
EXPOSE 8081
# 容器启动后执行的命令
ENTRYPOINT [ "java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "/practice-job.jar" ]

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
 
            <!--使用docker-maven-plugin插件,用于将该服务打包成镜像发往docker服务端-->
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>1.2.2</version>
                <!--将插件绑定在某个phase执行 -->
                <executions>
                    <execution>
                        <id>build-image</id>
                        <!--将插件绑定在package这个phase上。也就是说，用户只需执行mvn package ，就会自动执行mvn docker:build -->
                        <phase>package</phase>
                        <goals>
                            <goal>build</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <forceTags>true</forceTags>
                    <!--指定生成的镜像名 该处修改为自己想要生成的镜像名称-->
                    <imageName>practice-job</imageName>
                    <!--指定标签-->
                    <imageTags>
                        <imageTag>latest</imageTag>
                    </imageTags>
                    <!-- 指定Dockerfile 路径 -->
                    <dockerDirectory>${project.basedir}</dockerDirectory>
                    <!--指定远程docker地址 -->
                    <dockerHost>https://公网ip:2376</dockerHost>
                    <!--指定pem证书文件路径地址 -->
                    <dockerCertPath>${project.basedir}/src/main/resources/pem</dockerCertPath>
                    <!-- 这里是复制jar包到docker容器指定目录配置 -->
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <!--jar 包所在的路径此处配置的即对应 target 目录 -->
                            <directory>${project.build.directory}</directory>
                            <!-- 需要包含的jar包，这里对应的是Dockerfile中添加的文件名 -->
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>
        </plugins>
    </build>

apiVersion: v1
kind: Namespace
metadata:
  name: practice
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: practice-job-deployment
  namespace: practice
spec:
  replicas: 1
  selector:
    matchLabels:
      app: practice-job-pod
  template:
    metadata:
      labels:
        app: practice-job-pod
    spec:
      hostNetwork: true
      containers:
        - name: practice-job-container
          image: practice-job:latest  #镜像名称+版本
          imagePullPolicy: Never   #表示镜像来源，IfNotPresent本地没有就从hub仓库拉取，Never表示只从本地
          ports:
            - containerPort: 8081
          env:
            # 指定日志文件路径
            - name: logging.path
              value: /var/logs

apiVersion: v1
kind: Service
metadata:
  name: practice-job-service
  namespace: practice
  labels:
    app: practice-job-service
spec:
  type: NodePort
  selector:
    app: practice-job-pod
  ports:
    - name: http
      protocol: TCP
      port: 8081 #service（对内）的端口
      targetPort: 8081 #pod的端口
      nodePort: 32001 #service（对外）的端口

kubectl apply -f practice-job-deployment.yaml
kubectl apply -f practice-job-service.yaml