Python selenium TimeoutException：消息：连接被拒绝Can'；不要让FirefoxWebDriver在ubuntu 18.04终端上以无头模式运行

试图在Ubuntu18.04中运行简单代码，让selenium启动Firefox webdriver

from selenium import webdriver
from selenium.webdriver.firefox.options import Options
import time
import traceback

options = Options()
options.headless = True

try:
    print('Trying to create the driver')
    driver = webdriver.Firefox(options=options)
except Exception as e:
    tb = traceback.format_exc()
else:
    try:
        print('Trying to access ubuntu.com')
        driver.get('http://www.ubuntu.com/')
    except Exception as e:
        print(e)
    else:
        time.sleep(10)
        try:
            print('Trying to close the driver')
            driver.close()
            print('Task done')
        except Exception as e:
            print(e)
finally:
    print(tb)

当我以root运行代码时，这里是回溯：

Trying to create the driver
Traceback (most recent call last):
  File "test_sel.py", line 11, in <module>
    driver = webdriver.Firefox(options=options)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/firefox/webdriver.py", line 174, in __init__
    keep_alive=True)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.TimeoutException: Message: connection refused

我的selenium版本是3.14，geckodriver版本是0.26，Firefox版本>70，根据规范，我不应该看到任何兼容性问题。geckodriver文件位于“/usr/local/bin”和我的工作文件夹中。geckodriver.log和geckodriver都有777个权限

现在不知道该怎么办。请帮忙

当代码作为非根代码运行时，堆栈跟踪为：

Trying to create the driver
Traceback (most recent call last):
  File "test_sel.py", line 11, in <module>
    driver = webdriver.Firefox(options=options)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/firefox/webdriver.py", line 174, in __init__
    keep_alive=True)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.TimeoutException: Message: connection refused

---

用完整的错误堆栈跟踪更新问题。@DebanjanB刚刚添加请不要手工制作错误和错误堆栈跟踪，发布完整的错误。@DebanjanB我不确定你的意思。这是我在添加回溯模块时得到的回溯，没有回溯模块时也是同样的错误。@DebanjanB谢谢。我发现了我认为的问题所在。我在AWS上工作，我创建了一个新的ubuntu服务器，看看代码是否可以运行。我逐行输入python命令并创建了一个webdriver实例，但最后没有关闭webdriver，当一个端口打开时，我无法启动另一个驱动程序实例。我重新启动了服务器，再次运行python命令，最后关闭了webdriver，并能够稍后实例化另一个webdriver会话。我相信其他人看到我的解决方案是很重要的，所以我问你是否可以允许我发布我的答案。

Trying to create the driver
Traceback (most recent call last):
  File "test_sel.py", line 11, in <module>
    driver = webdriver.Firefox(options=options)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/firefox/webdriver.py", line 174, in __init__
    keep_alive=True)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.TimeoutException: Message: connection refused

1580851603716mozrunner::runnerINFORunning command: "/usr/bin/firefox" "-marionette" "-headless" "-foreground" "-no-remote" 
"-profile" "/tmp/rust_mozprofileCP9aHJ"
*** You are running in headless mode.
1580851605231addons.webextension.doh-rollout@mozilla.orgWARNLoading extension 'doh-rollout@mozilla.org': Reading manifest: In
valid extension permission: networkStatus
1580851605513addons.webextension.screenshots@mozilla.orgWARNLoading extension 'screenshots@mozilla.org': Reading manifest: In
valid extension permission: mozillaAddons
1580851605513addons.webextension.screenshots@mozilla.orgWARNLoading extension 'screenshots@mozilla.org': Reading manifest: In
valid extension permission: telemetry
1580851605513addons.webextension.screenshots@mozilla.orgWARNLoading extension 'screenshots@mozilla.org': Reading manifest: In
valid extension permission: resource://pdf.js/
1580851605513addons.webextension.screenshots@mozilla.orgWARNLoading extension 'screenshots@mozilla.org': Reading manifest: In
valid extension permission: about:reader*
JavaScript error: resource://gre/modules/Prompter.jsm, line 437: NS_ERROR_NOT_AVAILABLE: Cannot call openModalWindow on a hidden window