mas*_*f85 8 python selenium google-chrome selenium-chromedriver selenium-webdriver
我正在使用使用Python和Selenium的InstaPy。我每个Cron都会启动脚本,并且有时会崩溃。所以它确实是不规则的,有时运行得很好。我也已经在GitHub Repo上发布了消息,但是在那里没有得到答案,所以我现在在这里问是否有人知道为什么。
这是一个数字海洋ubuntu服务器,我在无头模式下使用它。驱动程序版本在日志中可见。这是错误消息:
ERROR [2018-12-10 09:53:54] [user]  Error occurred while deleting cookies from web browser!
b'Message: invalid session id\n  (Driver info: chromedriver=2.44.609551 (5d576e9a44fe4c5b6a07e568f1ebc753f1214634),platform=Linux 4.15.0-42-generic x86_64)\n'
Traceback (most recent call last):
  File "/root/InstaPy/instapy/util.py", line 1410, in smart_run
    yield
  File "./my_config.py", line 43, in <module>
    session.follow_user_followers(['xxxx','xxxx','xxxx','xxxx'], amount=100, randomize=True, interact=True)
  File "/root/InstaPy/instapy/instapy.py", line 2907, in follow_user_followers
    self.logfolder)
  File "/root/InstaPy/instapy/unfollow_util.py", line 883, in get_given_user_followers
    channel, jumps, logger, logfolder)
  File "/root/InstaPy/instapy/unfollow_util.py", line 722, in get_users_through_dialog
    person_list = dialog_username_extractor(buttons)
  File "/root/InstaPy/instapy/unfollow_util.py", line 747, in dialog_username_extractor
    person_list.append(person.find_element_by_xpath("../../../*")
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webelement.py", line 351, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webelement.py", line 659, in find_element
    {"using": by, "value": value})['value']
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webelement.py", line 633, in _execute
    return self._parent.execute(command, params)
  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.WebDriverException: Message: unknown error: session deleted because of page crash
from unknown error: cannot determine loading status
from tab crashed
  (Session info: headless chrome=70.0.3538.110)
  (Driver info: chromedriver=2.44.609551 (5d576e9a44fe4c5b6a07e568f1ebc753f1214634),platform=Linux 4.15.0-42-generic x86_64)
During handling of the above exception, another exception occurred:
    Traceback (most recent call last):
  File "/root/InstaPy/instapy/instapy.py", line 3845, in end
    self.browser.delete_all_cookies()
  File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 878, in delete_all_cookies
    self.execute(Command.DELETE_ALL_COOKIES)
  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.WebDriverException: Message: chrome not reachable
  (Session info: headless chrome=71.0.3578.80)
  (Driver info: chromedriver=2.44.609551 (5d576e9a44fe4c5b6a07e568f1ebc753f1214634),platform=Linux 4.15.0-42-generic x86_64)
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知道原因可能是什么以及如何解决?
小智 24
如果有人在使用 docker 容器时遇到这个问题:
创建容器时使用该标志--shm-size=2g,错误就消失了。该标志使容器使用主机的共享内存。
例子
$ docker run -d --net gridNet2020 --shm-size="2g" -e SE_OPTS="-browser applicationName=zChromeNodePdf30,browserName=chrome,maxInstances=1,version=78.0_debug_pdf" -e HUB_HOST=selenium-hub-3.141.59 -P -p 5700:5555 --name zChromeNodePdf30 -v /var/lib/docker/sharedFolder:/home/seluser/Downloads selenium/node-chrome:3.141.59-xenon
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来源: https: //github.com/SeleniumHQ/docker-selenium
Deb*_*anB 14
虽然您看到的错误为:
Error occurred while deleting cookies from web browser!
b'Message: invalid session id\n  (Driver info: chromedriver=2.44.609551 (5d576e9a44fe4c5b6a07e568f1ebc753f1214634),platform=Linux 4.15.0-42-generic x86_64)\n'
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主要的例外是:
selenium.common.exceptions.WebDriverException: Message: unknown error: session deleted because of page crash
from unknown error: cannot determine loading status
from tab crashed
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您的代码试用将为我们提供一些线索,指出出了什么问题。
有多种解决此问题的方法。但是,按照UnknownError:由于标签页崩溃导致会话删除,会话可以通过以下解决方案之一解决:
添加以下内容chrome_options:
chrome_options.add_argument('--no-sandbox')         
Run Code Online (Sandbox Code Playgroud)由于太小,Chrome似乎在某些页面的Docker容器中崩溃/dev/shm。因此,您可能必须修复较小的/dev/shm尺寸。
一个例子:
sudo mount -t tmpfs -o rw,nosuid,nodev,noexec,relatime,size=512M tmpfs /dev/shm
Run Code Online (Sandbox Code Playgroud)如果您使用-v /dev/shm:/dev/shm选项共享主机,它也可以工作 /dev/shm
使它起作用的另一种方法是将chrome_optionsas 添加--disable-dev-shm-usage。这将强制Chrome使用该/tmp目录。尽管这将减慢执行速度,因为将使用磁盘而不是内存。
chrome_options.add_argument('--disable-dev-shm-usage')        
Run Code Online (Sandbox Code Playgroud)从标签崩溃的是Chromium团队进行WIP(工作进行中)了相当长时间了,这与Linux试图始终使用/ dev / shm作为不可执行内存有关。以下是参考资料:
您可以在org.openqa.selenium.SessionNotCreatedException中找到详细的讨论:从Jenkins CI服务器执行时,会话未从选项卡崩溃的错误中创建异常
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