python - session 未创建异常 : Message: session not created from disconnected: unable to connect to renderer using Chromedriver on Linux Centos 7 Server

Question

我正在尝试在带有 selenium 和 python 的 Linux Centos 7 服务器上使用 headless chrome。尝试激活驱动程序时出现以下错误:

Traceback (most recent call last):
  File "send_notif_marktplaats.py", line 128, in <module>
    main()
  File "send_notif_marktplaats.py", line 117, in main
    driver = activate_driver()
  File "send_notif_marktplaats.py", line 42, in activate_driver
    driver = webdriver.Chrome(executable_path="/usr/local/bin/chromedriver", chrome_options=optionsChrome)
  File "/usr/lib/python2.7/site-packages/selenium/webdriver/chrome/webdriver.py", line 81, in __init__
    desired_capabilities=desired_capabilities)
  File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: session not created
from disconnected: unable to connect to renderer
  (Session info: headless chrome=80.0.3987.116)

我的版本:

• Chrome 驱动程序版本 80.0.3987.106
• 谷歌浏览器 80.0.3987.116

有人可以帮帮我吗？

Answer 1

这个错误信息...

selenium.common.exceptions.SessionNotCreatedException: Message: session not created
from disconnected: unable to connect to renderer
  (Session info: headless chrome=80.0.3987.116)

...暗示 ChromeDriver v80.0 无法启动/生成新的浏览上下文，即 Chrome 浏览器 session 。

---

根据讨论 WebDriver 80.0.3987.16 can't open Chrome on Linux @triciac 更新了 ChromeDriver 的实现v80.0 按以下顺序查找 Chrome:

1. locations->push_back(base::FilePath("/usr/local/sbin"));
2. locations->push_back(base::FilePath("/usr/local/bin"));
3. locations->push_back(base::FilePath("/usr/sbin"));
4. locations->push_back(base::FilePath("/usr/bin"));
5. locations->push_back(base::FilePath("/sbin"));
6. locations->push_back(base::FilePath("/bin"));
7. locations->push_back(base::FilePath("/opt/google/chrome"));//最后尝试使用默认安装位置。

@johnchen，确认 Linux 上的二进制搜索顺序被 r708243 意外更改，旨在更轻松地配置 Chrome 二进制文件的名称，但不小心也更改了搜索顺序。

ChromeDriver 团队已更新 ChromeDriver 以通过此 revision 解决此问题/commit .

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解决方案

上述解决方案适用于:

• ChromeDriver v80.0.3987.106
• ChromeDriver v81.0.4044.20

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临时解决方案

临时解决方案是使用 binary_location 属性，您可以在 Selenium: WebDriverException:Chrome failed to start: crashed as google-chrome is no longer running so ChromeDriver is assuming that Chrome has crashed 中找到详细讨论。