在无头计算机上的remoteseleniumwebdriver上配置linux浏览器时出现问题

Question

所以

我正在尝试将远程硒Web驱动程序（两端为3.14.0）从我的计算机连接到将在其中部署代码的服务器，以便始终对生产版本进行测试。我知道我只能在本地访问已部署的版本，但我想避免这种解决方法。

我已经正确设置了x11，并且可以从该计算机上的控制台启动google chrome，从而在我的本地计算机上获取gnome版本。

当我使用默认配置访问网格控制台时，可以看到服务器支持Windows 10 chrome。

我已使用本指南设置了集线器和节点，并且它们彼此正确连接https://www.guru99.com/introduction-to-selenium-grid.html。

我的问题是，即使该教程中要求Windows 10 chrome的基本代码也给了我一个错误，因为它没有在计算机上打开（服务器是linux，应该尝试打开我可以运行的chrome的gnome版本通过x11）。

package google;
import java.awt.AWTException;
import java.awt.Robot;
import java.io.IOException;
import java.util.List;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.Keys;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeTest;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import java.net.MalformedURLException;
import java.net.URL;

public class PruebasGoogleRemoto {
    static WebDriver driver;
    static String baseurl, nodeURL;

public static void main(String[] args) throws InterruptedException, AWTException, MalformedURLException {
        baseurl= "http://newtours.demoaut.com/";
        nodeURL="http://172.18.0.90:4420/wd/hub";
        DesiredCapabilities capability= DesiredCapabilities.chrome();
        capability.setBrowserName("chrome");
        capability.setPlatform(Platform.WIN10);
        driver=new RemoteWebDriver(new URL(nodeURL), capability);
        driver.get(baseurl);
     }
} 

我得到的错误日志如下：

Exception in thread "main" org.openqa.selenium.WebDriverException: Error forwarding the new session cannot find : Capabilities {browserName: chrome, platform: UNIX, version: }
Command duration or timeout: 138 milliseconds
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
    at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$new$0(JsonWireProtocolResponse.java:53)
    at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$getResponseFunction$2(JsonWireProtocolResponse.java:91)
    at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0(ProtocolHandshake.java:122)
    at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
    at java.util.Spliterators$ArraySpliterator.tryAdvance(Unknown Source)
    at java.util.stream.ReferencePipeline.forEachWithCancel(Unknown Source)
    at java.util.stream.AbstractPipeline.copyIntoWithCancel(Unknown Source)
    at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
    at java.util.stream.FindOps$FindOp.evaluateSequential(Unknown Source)
    at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
    at java.util.stream.ReferencePipeline.findFirst(Unknown Source)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:125)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:73)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:136)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:548)
    at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:212)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:130)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:143)
    at google.PruebasGoogleRemoto.main(PruebasGoogleRemoto.java:36)
Caused by: org.openqa.selenium.WebDriverException: Error forwarding the new session cannot find : Capabilities {browserName: chrome, platform: UNIX, version: }
Build info: version: '3.14.0', revision: 'aacccce0', time: '2018-08-02T20:05:20.749Z'
System info: host: 'PC-10589', ip: '192.168.56.1', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_181'
Driver info: driver.version: unknown
    at org.openqa.grid.web.servlet.handler.RequestHandler.process(RequestHandler.java:118)
    at org.openqa.grid.web.servlet.DriverServlet.process(DriverServlet.java:85)
    at org.openqa.grid.web.servlet.DriverServlet.doPost(DriverServlet.java:69)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.seleniumhq.jetty9.servlet.ServletHolder.handle(ServletHolder.java:860)
    at org.seleniumhq.jetty9.servlet.ServletHandler.doHandle(ServletHandler.java:535)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
    at org.seleniumhq.jetty9.security.SecurityHandler.handle(SecurityHandler.java:548)
    at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190)
    at org.seleniumhq.jetty9.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
    at org.seleniumhq.jetty9.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
    at org.seleniumhq.jetty9.servlet.ServletHandler.doScope(ServletHandler.java:473)
    at org.seleniumhq.jetty9.server.session.SessionHandler.doScope(SessionHandler.java:1564)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
    at org.seleniumhq.jetty9.server.handler.ContextHandler.doScope(ContextHandler.java:1155)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.seleniumhq.jetty9.server.Server.handle(Server.java:530)
    at org.seleniumhq.jetty9.server.HttpChannel.handle(HttpChannel.java:347)
    at org.seleniumhq.jetty9.server.HttpConnection.onFillable(HttpConnection.java:256)
    at org.seleniumhq.jetty9.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
    at org.seleniumhq.jetty9.io.FillInterest.fillable(FillInterest.java:102)
    at org.seleniumhq.jetty9.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
    at org.seleniumhq.jetty9.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
    at org.seleniumhq.jetty9.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
    at org.seleniumhq.jetty9.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
    at java.lang.Thread.run(Thread.java:748) 

我已继续进行本教程，并在启动集线器时尝试使用https://github.com/SeleniumHQ/selenium/blob/master/java/server/src/org/openqa/grid/common/defaults/DefaultHub.json上的默认集线器配置，然后使用defaultnode.json文件启动该节点。

{
      "capabilities":
      [
        {
          "browserName": "firefox",
          "maxInstances": 5,
          "seleniumProtocol": "WebDriver"
        },
        {
          "browserName": "chrome",
          "maxInstances": 5,
          "seleniumProtocol": "WebDriver",
          "platformName" : "LINUX"
        },
        {
          "browserName": "internet explorer",
          "maxInstances": 1,
          "seleniumProtocol": "WebDriver"
        }
      ],
      "proxy": "org.openqa.grid.selenium.proxy.DefaultRemoteProxy",
      "maxSession": 5,
      "port": 5555,
      "register": true,
      "registerCycle": 5000,
      "hub": "http://172.18.0.90:4420",
      "nodeStatusCheckTimeout": 5000,
      "nodePolling": 5000,
      "role": "node",
      "unregisterIfStillDownAfter": 60000,
      "downPollingLimit": 2,
      "debug": false,
      "servlets" : [],
      "withoutServlets": [],
      "custom": {}
    }

这样做之后，我在网格控制台上获得了可用浏览器的以下列表。grid console ignoring the linux browser

我现在想知道如何在节点上添加对Linux浏览器的支持，因为我知道我可以在Windows机器上启动chrome的gnome版本，该机器通过使用x11的终端通过此无头机器连接。