4.docker-maven-plugin

在前两篇文章2.Docker-resigtry2和3.SpringCloud-Eureka-Docker基础上进行配置。

例子使用com.spotify的maven插件，后续会对比研究io.fabric3的maven插件。

1.将插件配置到pom文件中

1.1 定义变量

配置hosts文件，加入59.110.14.120 docker.registry.server

<properties>

<docker.registry.server>docker.registry.server:5000</docker.registry.server>

</properties>

1.2 配置插件

<plugin>

<groupId>com.spotify</groupId>

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

<version>3.7.0</version>

<configuration>

<!--setting.xml的id-->

<serverId>docker.registry.server</serverId>

<!--推送到私有仓库-->

<imageName>${docker.registry.server}/${project.artifactId}</imageName>

<!--推送到本地仓库-->

<!--<imageName>${project.artifactId}</imageName>-->

<!--使用dockerfile构建镜像-->

<!--<dockerDirectory>docker</dockerDirectory>-->

<!--标签定义命令-->

<baseImage>openjdk:8u131-jdk-alpine</baseImage>

<entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>

<resources>

<resource>

<targetPath>/</targetPath>

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

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

</resource>

</resources>

</configuration>

<!--绑定生命周期-->

<executions>

<execution>

<id>build-image</id>

<phase>package</phase>

<goals>

<goal>build</goal>

</goals>

</execution>

<execution>

<id>tag-image</id>

<phase>package</phase>

<goals>

<goal>tag</goal>

</goals>

<configuration>

<image>${docker.registry.server}/${project.artifactId}</image>

<newName>${docker.registry.server}/${project.artifactId}</newName>

</configuration>

</execution>

</executions>

</plugin>

1.3 setting.xml配置

<server>

<id>docker.registry.server</id>

<username>gaojingyuan</username>

<password>testpwd</password>

<configuration>

<email>gaojingyuanyuan@126.com</email>

</configuration>

</server>

2.打包并推送image

mvn clean package -DpushImage

3. 服务器下载并启动服务

登录私服

docker login docker.registry.server:5000

下载镜像

docker pull docker.registry.server:5000/eurekaserverdocker

启动服务

docker stack deploy -c docker-compose.yml eurekaserverdocker

停止服务

docker stack rm eurekaserverdocker

常见错误：

1.执行mvn clean package -DpushImage5次retry后报错：

Failed to push docker.registry.server:5000/eurekaserverdocker, retrying in 10 seconds (5/5).

com.spotify.docker.client.exceptions.DockerException: no basic auth credentials

解决方法：

需要配置 vim .docker/config.json

把"docker.registry.server:5000": {},改为"https://docker.registry.server:5000": {},

"auths": {

"https://docker.registry.server:5000": {},

"https://index.docker.io/v1/": {}

},

https://github.com/spotify/docker-client/issues/804

2.执行mvn clean package -DpushImage报错：

Failed to execute goal com.spotify:docker-maven-plugin:1.0.0:tag (tag-image) on project eurekaserverdocker: Exception caught: Image not found: eurekaserverdocker: Request error: POST unix://localhost:80/images/eurekaserverdocker/tag?repo=docker.registry.server%3A5000%2Feurekaserverdocker: 404, body: {"message":"No such image: eurekaserverdocker:latest"}: HTTP 404 Not Found -> [Help 1]

解决方法：

需要正确配置<image>和<newName>

<execution>

<id>tag-image</id>

<phase>package</phase>

<goals>

<goal>tag</goal>

</goals>

<configuration>

<image>${docker.registry.server}/${project.artifactId}</image>

<newName>${docker.registry.server}/${project.artifactId}</newName>

</configuration>

</execution>

参考

https://github.com/spotify/docker-maven-plugin

https://www.jianshu.com/p/3b91b8958c3e