The MySQL errors are likely the fact that you didn't set the pool_recycle time in your SQLAlchemy connection pool. MySQL connections timeout (by default) after 8 hours I believe.
http://www.sqlalchemy.org/docs/dialects/mysql.html#connection-timeouts The timeout is also available as an INI setting. On Thu, Oct 27, 2011 at 2:41 PM, Benjamin Sims <benjamins...@gmail.com>wrote: > The log is posted at the end of my previous mail - I do sometimes get > 'MySQL has gone away errors' but they do not seem to be always at the same > time as this one, which is: > > UnicodeDecodeError: 'utf8' codec can't decode byte 0x92 in position 467 > > > > 2011/10/27 Cornelius Kölbel <cornelius.koel...@lsexperts.de> > >> So you get an internal server error? >> Take a look into the apache error log. >> I guess you will see a "mysql server has gone away" >> >> Kind regards >> Cornelius >> >> -- >> Cornelius Kölbel >> Http://www.lsexperts.de >> LSE Leading Security Experts GmbH >> Tel: +49 6151 9067-252, mobil: +49 160 96307089 >> Unternehmenssitz: Weiterstadt >> Geschäftsführer: Oliver Michel, Sven Walther, Dr. Peter Schill >> >> >> Am 27.10.2011 um 20:23 schrieb Benjamin Sims <benjamins...@gmail.com>: >> >> Hi all, >> >> I've recently moved from Paster + Sqlite to Apache + MySQL and, well, it >> hasn't been smooth. I'm running into various problems which are likely due >> to the server setup (occasional very slow connections, MySQL has gone away >> errors) etc. >> >> However, I have one that is really bugging me and I would appreciate any >> thoughts from those who might have seen it before or can guide me as to >> where to focus debugging. >> >> Every so often, the server will throw a 500 error (log below). I >> understand the need to encode/decode strings correctly; the problem here is >> that I cannot reliably reproduce the error to find where the mistake is. If >> I reload a page ten times, sometimes the error will occur; sometimes it >> won't. I get the impression that it happens more often when the server isn't >> 'warmed up' by requests, but I may be imagining this. >> >> Thanks for any tips; I apologise for the lack of detail. >> >> Ben >> >> [Fri Oct 28 02:03:27 2011] [error] No handlers could be found for logger >> "exc_logger" >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] mod_wsgi >> (pid=7827): Exception occurred processing WSGI script >> '/home/my_user/virtualenv/app_dir.wsgi'., referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] Traceback (most >> recent call last):, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/repoze.tm2-1.0b2-py2.6.egg/repoze/tm/__init__.py", >> line 24, in __call__, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] result = >> self.application(environ, save_status_and_headers), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/pyramid-1.2.1-py2.6.egg/pyramid/router.py", >> line 176, in __call__, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] response = >> self.handle_request(request), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/pyramid-1.2.1-py2.6.egg/pyramid/tweens.py", >> line 34, in excview_tween, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] response = >> view_callable(exc, request), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/pyramid-1.2.1-py2.6.egg/pyramid/config/views.py", >> line 311, in rendered_view, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] context), >> referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:27 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/pyramid-1.2.1-py2.6.egg/pyramid/renderers.py", >> line 393, in render_view, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] return >> self.render_to_response(response, system, request=request), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/pyramid-1.2.1-py2.6.egg/pyramid/renderers.py", >> line 422, in render_to_response, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] result = >> self.render(value, system_values, request=request), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/pyramid-1.2.1-py2.6.egg/pyramid/renderers.py", >> line 418, in render, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] result = >> renderer(value, system_values), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/pyramid-1.2.1-py2.6.egg/pyramid/chameleon_zpt.py", >> line 49, in __call__, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] result = >> self.template(**system), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/Chameleon-2.5.1-py2.6.egg/chameleon/template.py", >> line 132, in __call__, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] return >> self.render(**kwargs), referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/Chameleon-2.5.1-py2.6.egg/chameleon/zpt/template.py", >> line 213, in render, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] return >> super(PageTemplate, self).render(**vars), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/Chameleon-2.5.1-py2.6.egg/chameleon/template.py", >> line 176, in render, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] >> self.cook_check(), referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/Chameleon-2.5.1-py2.6.egg/chameleon/template.py", >> line 285, in cook_check, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] body = >> self.read(), referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/Chameleon-2.5.1-py2.6.egg/chameleon/template.py", >> line 299, in read, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] data, >> self.default_encoding, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/home/my_user/virtualenv/lib/python2.6/site-packages/Chameleon-2.5.1-py2.6.egg/chameleon/utils.py", >> line 123, in read_bytes, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] return >> body.decode(encoding), encoding, content_type, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] File >> "/usr/lib64/python2.6/encodings/utf_8.py", line 16, in decode, referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] return >> codecs.utf_8_decode(input, errors, True), referer: >> <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> [Fri Oct 28 02:03:28 2011] [error] [client 217.46.198.185] >> UnicodeDecodeError: 'utf8' codec can't decode byte 0x92 in position 467: >> unexpected code byte, referer: <http://example.org/app_dir/stream/all/1> >> http://example.org/app_dir/stream/all/1 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "pylons-discuss" group. >> To post to this group, send email to pylons-discuss@googlegroups.com. >> To unsubscribe from this group, send email to >> pylons-discuss+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/pylons-discuss?hl=en. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "pylons-discuss" group. >> To post to this group, send email to pylons-discuss@googlegroups.com. >> To unsubscribe from this group, send email to >> pylons-discuss+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/pylons-discuss?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "pylons-discuss" group. > To post to this group, send email to pylons-discuss@googlegroups.com. > To unsubscribe from this group, send email to > pylons-discuss+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/pylons-discuss?hl=en. > -- Michael -- You received this message because you are subscribed to the Google Groups "pylons-discuss" group. 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