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收到此 Selenium 服务器错误：[1567550645.996][SEVERE]：bind() 失败：无法分配请求的地址 (99)

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收到此 Selenium 服务器错误：[1567550645.996][SEVERE]：bind() 失败：无法分配请求的地址 (99)

我正在尝试在 EC2 服务器上设置 Selenium Grid，以下是我迄今为止采取的步骤。

  1. 在端口 4044 上启动 hub

    java -jar /ebst/wrangler/upla/bin/selenium-server-standalone-3.141.59.jar -role hub -port 4044

  2. 在 4045 上注册一个节点

    java -Dwebdriver.chrome.driver="~/chromedriver" -jar ~/selenium-server-standalone-3.141.59.jar -role node -hub http://hubURL:4044/grid/register -port 4045

  3. 在我的 Java 代码中启动 Webdriver

    import cucumber.api.java.Before;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

import java.net.MalformedURLException;
import java.net.URL;


public class Test {
    WebDriver driver;

    @Before
    public void setup() throws MalformedURLException {

        String nodeURL = "http://hubURL:4044/wd/hub";
        System.out.println("setting up");

        DesiredCapabilities desiredCapabilities = DesiredCapabilities.chrome();
        desiredCapabilities.setBrowserName("chrome");

        desiredCapabilities.setPlatform(Platform.LINUX);

        ChromeOptions chromeOptions = new ChromeOptions();

        chromeOptions.addArguments(
                "--verbose",
                "--headless",
                "--disable-web-security",
                "--ignore-certificate-errors",
                "--allow-running-insecure-content",
                "--allow-insecure-localhost",
                "--no-sandbox",
                "--disable-gpu");

        chromeOptions.merge(desiredCapabilities);

        driver = new RemoteWebDriver(new URL(nodeURL), chromeOptions);
        System.out.println("setting up done");

    }
}

    在控制台上，我因超时而收到以下错误。

    org.openqa.selenium.WebDriverException: unknown error: cannot find Chrome binary   
(Driver info: chromedriver=74.0.3729.6 (255758eccf3d244491b8a1317aa76e1ce10d57e9-refs/branch-heads/3729@{#29}),platform=Linux 3.10.0-1062.el7.x86_64 x86_64) (WARNING: The server did not provide any stacktrace information) 
Command duration or timeout: 16 milliseconds 
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:25:53' System info: host: 'ip-10-160-169-203.syd.non.c1.macquarie.com', ip: '10.160.169.203', os.name: 'Linux', os.arch: 'amd64', os.version: '3.10.0-1062.el7.x86_64', java.version: '1.8.0_181'
Driver info: driver.version: unknown Command duration or timeout: 523 milliseconds

    当我导航回节点服务器时，显示的消息如下。

    22:44:05.604 INFO [ActiveSessionFactory.lambda$apply$11] - Matched factory org.openqa.selenium.grid.session.remote.ServicedSession$Factory (provider: org.openqa.selenium.chrome.ChromeDriverService)
Starting ChromeDriver 74.0.3729.6 (255758eccf3d244491b8a1317aa76e1ce10d57e9-refs/branch-heads/3729@{#29}) on port 3459
Only local connections are allowed.
Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
[1567550645.675][SEVERE]: bind() failed: Cannot assign requested address (99)

22:44:05.988 INFO [ActiveSessionFactory.apply] - Capabilities are: {
  "browserName": "chrome",
  "goog:chromeOptions": {
    "args": [
      "--verbose",
      "--headless",
      "--disable-web-security",
      "--ignore-certificate-errors",
      "--allow-running-insecure-content",
      "--allow-insecure-localhost",
      "--no-sandbox",
      "--port:4040",
      "--disable-gpu"
    ],
    "extensions": [
    ]
  },
  "platform": "LINUX",
  "version": ""
}

我理解出现此错误的原因是，我们公司只有某些端口可用，而 ChromeDriver 每次都是在随机端口上启动的。为了指定此 ChromeDriver 每次启动的端口，我在 Java 代码中尝试了各种 ChromeOptions 和 RemoteWebDriver 的指定，但都无济于事。

这是在 EC2 上启动 Selenium 服务器的正确方法吗？

任何帮助都将不胜感激！

答案1

尝试以下命令：

java -Dwebdriver.chrome.driver="<path-of-chromedriver>" -jar ~/node_modules/webdriver-manager/selenium/selenium-server-standalone-3.141.59.jar -port 4444

我认为 ChromeDriver 和 Selenium 应该在同一端口运行。

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