spring-boot dubbo项目使用docker方式部署

项目结构

本项目采用maven构建，有三个模块，分别是pms-interfaces, pms-services, pms-portal。

pms-interfaces	接口层，只能存放实体，枚举，接口。
pms-services	服务层，使用 dubbo向外暴露服务
pms-portal	用户界面层，使用前后端分离的方式来构建用户界面，它又分为frontend和spring mvc两层。其中spring mvc 的controller负责访问dubbo服务，然后向frontend提供restful服务。

项目结构截图如下：

使用docker-maven-plugin

1. 其中parent POMs和 pms-interfaces不需要构造镜像，因此需要跳过。

    <!--build plugin-->

    <build>

        <plugins>

            <!--docker-maven-plugin-->

            <plugin>

                <groupId>com.spotify</groupId>

                <artifactId>docker-maven-plugin</artifactId>

                <configuration>

                    <skipDockerBuild>true</skipDockerBuild>

                </configuration>

            </plugin>

        </plugins>

    </build>

1. pms-services的配置

• POM配置

	<build>

		<plugins>

			<plugin>

				<groupId>org.springframework.boot</groupId>

				<artifactId>spring-boot-maven-plugin</artifactId>

			</plugin>

			<!--docker-maven-plugin-->

			<plugin>

				<groupId>com.spotify</groupId>

				<artifactId>docker-maven-plugin</artifactId>

				<configuration>

					<skipDockerBuild>false</skipDockerBuild>

					<imageName>${project.name}:${project.version}</imageName>

					<dockerDirectory>${project.basedir}/docker</dockerDirectory>

					<resources>

						<resource>

							<directory>${project.build.directory}</directory>

							<include>${project.build.finalName}.jar</include>

						</resource>

					</resources>

				</configuration>

			</plugin>

		</plugins>

	</build>

• Dockerfile的定义,位置在项目目录下的docker文件夹中(${project.basedir}/docker)

# Dockerfile

FROM java:8-jre

# 设置工作目录

WORKDIR /app

# 将jar文件拷贝到镜像中。注：docker-maven-plugin 会将jar文件拷贝到构建目录target/docker/中

COPY ./pms-services-1.0-SNAPSHOT.jar /app/app.jar

EXPOSE 20880

CMD ["java", "-jar", "/app/app.jar"]

1. pms-portal的配置

• POM配置

<build>

		<plugins>

			<plugin>

				<groupId>org.springframework.boot</groupId>

				<artifactId>spring-boot-maven-plugin</artifactId>

			</plugin>

			<!--docker-maven-plugin-->

			<plugin>

				<groupId>com.spotify</groupId>

				<artifactId>docker-maven-plugin</artifactId>

				<configuration>

					<skipDockerBuild>false</skipDockerBuild>

					<imageName>${project.name}:${project.version}</imageName>

					<dockerDirectory>${project.basedir}/docker</dockerDirectory>

					<resources>

						<resource>

							<directory>${project.build.directory}</directory>

							<include>${project.build.finalName}.jar</include>

						</resource>

					</resources>

				</configuration>

			</plugin>

		</plugins>

	</build>

• Dockerfile的定义,位置在项目目录下的docker文件夹中(${project.basedir}/docker)

# Dockerfile

FROM java:8-jre

# 设置工作目录

WORKDIR /app

# 将jar文件拷贝到镜像中。注：docker-maven-plugin 会将jar文件拷贝到构建目录target/docker/中

COPY ./pms-portal-1.0-SNAPSHOT.jar /app/app.jar

EXPOSE 8000

CMD ["java", "-jar", "/app/app.jar"]

1. 注意：在使用docker-maven-plugin时，还需要在~/.m2/settings.xml中的pluginGroups节点下增加com.your.plugins

 <!-- pluginGroups

   | This is a list of additional group identifiers that will be searched when resolving plugins by their prefix, i.e.

   | when invoking a command line like "mvn prefix:goal". Maven will automatically add the group identifiers

   | "org.apache.maven.plugins" and "org.codehaus.mojo" if these are not already contained in the list.

   |-->

  <pluginGroups>

    <!-- pluginGroup

     | Specifies a further group identifier to use for plugin lookup.

    <pluginGroup>com.your.plugins</pluginGroup>

    -->

	<pluginGroup>com.spotify</pluginGroup>

  </pluginGroups>

1. 开始构建镜像

• 在docker所在服务中配置tcp绑定

  [root@localhost ~]# cd /etc/docker

  [root@localhost ~]# vim daemon.json

  {

    "registry-mirrors": ["http://b24820b7.m.daocloud.io"],

    "hosts": ["tcp://0.0.0.0:2375", "unix:///var/run/docker.sock"]

  }

  [root@localhost ~]# service docker restart

• 在开发环境中配置环境变量DOCKER_HOST
  
  
• 开始构建镜像

  mvn clean package docker:build -Dmaven.test.skip=true

在服务器上运行容器并测试

• 依次运行pms-services, pms-portal

  [root@localhost ~]# docker run -d pms-services:1.0-SNAPSHOT

  [root@localhost ~]# docker run -d -p 8000:8000 pms-portal:1.0-SNAPSHOT

• 登录zookeeper gui查看dubbo服务注册信息
  
  
  
  

  # provider

  dubbo://172.17.0.2:20880/com.lovefly.pms.interfaces.service.TestService?anyhost=true&application=pms-services&dubbo=2.5.3&interface=com.lovefly.pms.interfaces.service.TestService&methods=echo&pid=1&revision=1.0-SNAPSHOT&side=provider&timestamp=1504436089577

  # consumer

  consumer://172.17.0.3/com.lovefly.pms.interfaces.service.TestService?application=pms-portal&category=consumers&check=false&dubbo=2.5.3&interface=com.lovefly.pms.interfaces.service.TestService&methods=echo&pid=1&revision=1.0-SNAPSHOT&side=consumer&timestamp=1504436100128

• 在浏览器中访问pms-portal
  
  

• 使用curl测试pms-portal

  [root@localhost docker]# curl -X GET http://192.168.41.128:8000/api/echo?input=ping2222

    ping2222: pong from service

  [root@localhost docker]#

在容器中配置时区的两种方式

1. 通过docker-compose的volumes配置,跟宿主服务器操持一致

  volumes:

  - "/etc/timezone:/etc/timezone:ro"

  - "/etc/localtime:/etc/localtime:ro"

1. 通过环境变量设置时区

  # 设置时区

  ENV TZ=Asia/Shanghai

在容器中设置hosts

1. 通过docker-compose的extra_host配置

  extra_hosts:

    - "somehost:162.242.195.82"

    - "otherhost:50.31.209.229"

1. 通过命令行参数--add-host设置

  [root@localhost ~]# docker run -d --add-host "service.ielong.cn":172.17.0.4 --add-host "servicewx.ielong.cn":172.17.0.5  pms-services:1.0-SNAPSHOT

参考文档：

• docker-maven-plugin
• configuring the docker daemon port
• docker container timezone
• time-in-docker-containers
• how-to-update-etc-hosts-file-in-docker-image-during-docker-build
• docker-now-supports-adding-host-mappings
• configure-dns