我正在使用这个maven docker插件
https://github.com/wouterd/docker-maven-plugin
我的pom.xml文件看起来像
<plugin>
<groupId>net.wouterdanes.docker</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>5.0.0</version>
<executions>
<execution>
<id>package</id>
<goals>
<goal>build-images</goal>
</goals>
<configuration>
<images>
<image>
<id>cloudera</id>
<dockerFile>${project.basedir}/src/integration-test/docker/Dockerfile</dockerFile>
<artifacts>
<artifact>
<file>${project.build.directory}/${project.build.finalName}.jar</file>
</artifact>
</artifacts>
</image>
</images>
</configuration>
</execution>
<execution>
<id>start</id>
<goals>
<goal>start-containers</goal>
</goals>
<configuration>
<!-- You can set forceCleanup to true to stop and remove started containers
at the end of the build even if the stop-containers goal is not executed
(useful for preventing Ctrl+C causing dangling containers) -->
<forceCleanup>true</forceCleanup>
<containers>
<container>
<id>cloudera</id>
<image>cloudera/quickstart</image>
<waitForStartup>Cloudera started for</waitForStartup>
</container>
</containers>
</configuration>
</execution>
<execution>
<id>stop</id>
<goals>
<goal>stop-containers</goal>
</goals>
</execution>
<execution>
<id>verify</id>
<goals>
<goal>verify</goal>
</goals>
</execution>
</executions>
</plugin>
当我使用mvn verify -e -X运行构建时，我得到错误
ERROR] Failed to execute goal net.wouterdanes.docker:docker-maven-plugin:5.0.0:build-images (package) on project SparkIntegrationTest: Execution package of goal net.wouterdanes.docker:docker-maven-plugin:5.0.0:build-images failed: java.net.ConnectException: Connection refused -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal net.wouterdanes.docker:docker-maven-plugin:5.0.0:build-images (package) on project SparkIntegrationTest: Execution package of goal net.wouterdanes.docker:docker-maven-plugin:5.0.0:build-images failed: java.net.ConnectException: Connection refused
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution package of goal net.wouterdanes.docker:docker-maven-plugin:5.0.0:build-images failed: java.net.ConnectException: Connection refused
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
... 20 more
Caused by: javax.ws.rs.ProcessingException: java.net.ConnectException: Connection refused
at org.glassfish.jersey.client.HttpUrlConnector.apply(HttpUrlConnector.java:229)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:246)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:667)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:664)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:424)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:664)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:424)
at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:333)
at net.wouterdanes.docker.remoteapi.MiscService.buildImage(MiscService.java:130)
at net.wouterdanes.docker.provider.RemoteApiBasedDockerProvider.buildImage(RemoteApiBasedDockerProvider.java:99)
at net.wouterdanes.docker.maven.BuildImageMojo.doExecute(BuildImageMojo.java:60)
at net.wouterdanes.docker.maven.AbstractDockerMojo.execute(AbstractDockerMojo.java:120)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
at sun.net.www.http.HttpClient.New(HttpClient.java:308)
at sun.net.www.http.HttpClient.New(HttpClient.java:326)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1168)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1104)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:998)
我不明白的是"拒绝连接到什么"？哪个资源不可连接？如果我知道的话，也许我可以解决这个问题。
我还没有使用过这个插件，但从文档中可以看出，它使用docker HTTP API与deamon对话。默认情况下，HTTP API被禁用（因为它可能存在安全风险，并使用文件套接字）。要启用HTTP API，您必须更改后台程序的启动参数，并添加参数-H tcp://0.0.0.0:2375（或指定ip而不是0.0.0.0）。这在docker后台程序文档和插件文档中进行了解释
以上内容适用于Linux（因为docker在那里本地运行）。在Windows或Mac上，您将使用docker机器。在这些情况下，您需要设置3个环境变量，这些变量可以通过运行命令docker-machine env default获得，然后运行maven命令。