Python Selenium 和 Chromedriver CentOS8

Python Selenium and Chromedriver CentOS8

我有一个 python 脚本,它使用 selenium 和 chrome 驱动程序。 它在我的 CentOS8 VPS 上完美运行了 3 天没有任何问题。

但是从今天早上开始,脚本启动,等待将近 80 秒并显示:

[12/Jan/2021 23:04:51] ERROR - Failed : Message: chrome not reachable

Traceback (most recent call last):
  File "script.py", line 55, in <module>
    driver = launch()
  File "script.py", line 37, in launch
    browser = webdriver.Chrome('/usr/bin/chromedriver',chrome_options=chrome_options)
  File "/usr/local/lib/python3.6/site-packages/selenium/webdriver/chrome/webdriver.py", line 81, in __init__
    desired_capabilities=desired_capabilities)
  File "/usr/local/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/usr/local/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/local/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python3.6/site-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

没有修改过,为什么现在失败了? 我的 VPS 上没有任何屏幕,所以看不到更多信息。

这是一些信息:

关于 chrome 驱动程序的 yum 信息:

Nom          : chromedriver
Version      : 87.0.4280.88
Publication  : 1.el8
Architecture : x86_64
Taille       : 27 M
Source       : chromium-87.0.4280.88-1.el8.src.rpm
Dépôt        : @System
Depuis le dé : epel

google-chrome --version :

Google Chrome 87.0.4280.141 

脚本开头:

from dotenv import load_dotenv
from logger import logger as l
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.support import expected_conditions
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
from selenium.common.exceptions import NoSuchElementException
from selenium.webdriver.chrome.options import Options

import time
import sys
import subprocess

load_dotenv(verbose=True)
dotenv_path = '.env'
load_dotenv(dotenv_path)

def launch():
    chrome_options = Options()
    chrome_options.add_argument('--headless')
    chrome_options.add_argument('--no-sandbox')

    browser = webdriver.Chrome('/usr/bin/chromedriver',chrome_options=chrome_options)
    l.info('Started Chrome')
    return browser

拇指法则

A common cause for Chrome to crash during startup is running Chrome as root user (administrator) on Linux. While it is possible to work around this issue by passing --no-sandbox flag when creating your WebDriver session, such a configuration is unsupported and highly discouraged. You need to configure your environment to run Chrome as a regular user instead.


解决方案

删除以下内容chrome_options

  • --no-sandbox

并以 非 root 用户身份执行您的代码。


结尾

这是 Sandbox 故事的 link。

问题已解决,但不明白如何解决。 我只是重新启动我的 VPS(重新启动),然后......它再次工作。 奇怪

编辑:找出原因! 我只是在脚本末尾犯了一个错误: b.close(); 但是“b”不存在,我的驱动变量名是“driver”。

异常被捕获,没有显示,所以我什么也没看到。 但是今天,我启动了一个“top”命令,并在后台看到了所有“chrome”进程运行。

可能几天后,内存已满,Chrome无法启动。 错误不清楚,但无论如何,这是我的错。