间歇性的"getrandom()初始化失败".使用刮spider的蜘蛛 [英] Intermittent "getrandom() initialization failed" using scrapy spider

问题描述

我建造了一只沙哑的蜘蛛(沙哑的1.4). django网站通过django-rq并由监督者按需触发了该蜘蛛.

I built a scrapy spider (scrapy 1.4). This spider is triggered on demand from a django website through django-rq and supervisord.

这里是受监管的作业，正在监听django-rq事件(reddit用作代理)

Here is the supervisord job that is listening for django-rq events (reddit is used as broker)

[program:rq_worker] 
command=python3 manage.py rqworker default 
directory=/var/www/django-app 
autostart=true 
autorestart=true 
stderr_logfile=/var/log/rq_worker.err.log 
stdout_logfile=/var/log/rq_worker.out.log

此设置运行良好. 但是，有时(我无法按需重现该问题)，所有蜘蛛都会引发相同的OpenSSL错误:

This set up is running fine. However, from time to time (I cannot reproduce the issue on demand), all the spiders throw the same OpenSSL error:

2018-02-11 11:02:19 [scrapy.core.scraper] ERROR: Error downloading <GET https://whateverwebsite.com>
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/twisted/internet/defer.py", line 1299, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/local/lib/python3.5/dist-packages/twisted/python/failure.py", line 393, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/local/lib/python3.5/dist-packages/scrapy/core/downloader/middleware.py", line 43, in process_request
    defer.returnValue((yield download_func(request=request,spider=spider)))
twisted.web._newclient.ResponseNeverReceived: [<twisted.python.failure.Failure OpenSSL.SSL.Error: [('', 'osrandom_rand_bytes', 'getrandom() initialization failed.')]>]

重新启动主管使问题消失.

Restarting supervisord makes the issue disappearing.

要确保我的网站及其蜘蛛网正常运行，我必须在每次重新启动supervisor时进行测试，以确保没有问题.没什么大不了，但仍然...

To make sure my website and its spiders are running properly I have to test each time supervisord is restarted that there is no issue. Not a big deal but still...

我想了解那里出了什么问题? 如何解决此问题?与主管相关吗?扭曲相关吗?与OpenSSL相关?

I would like to understand what's going wrong there? How can I troubleshoot this issue? Is it supervisord related? Twisted related? openSSL related?

谢谢您的帮助

推荐答案

我有类似的错误，但是使用了python-requests库:

I had similar error, but with python-requests library:

Error([('', 'osrandom_rand_bytes', 'getrandom() initialization failed.')],)

这是由于随机数生成器未能及时收集足够的熵引起的.我已经安装了 rng-tools ，它解决了问题.

This was caused by random number generator that failed to gather enough entropy in time. I've installed rng-tools and it solved the problem.

这篇关于间歇性的"getrandom()初始化失败".使用刮spider的蜘蛛的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！