[Zope] ZEO Strange Session KeyError When Load Balanced
Jason J. W. Williams
jasonjwwilliams at gmail.com
Sat Feb 12 21:47:43 EST 2005
Michael,
I'll take a look at the Transience product. We have tried using
FileStorage but to the same effect unfortunately. I'll let y'all know
how it works.
-Jason
On Sat, 12 Feb 2005 15:37:23 +1300, Michael Dunstan <michael at elyt.com> wrote:
> Hi Jason,
>
> It'd be worth checking that the clocks on your ZEO clients are somewhat
> consistent.
>
> Alternatives that might be worth exploring:
>
> - Disable inband housekeeping. And use a single ZEO client to run the
> housekeeping. (See Products/Transience/Transience.py)
>
> - Try with no session expiration. (Data object timeout value of 0).
> That's unlikely to be mode you want to operate in I suspect. But it
> might be a useful trouble shooting step.
>
> - Use FileStorage rather than TemporaryStorage for the session store on
> the ZEO server. Obviously you'd need to pack that from time to time.
>
> Michael.
>
> On 11/02/2005, at 8:06, Jason J. W. Williams wrote:
>
> > Chris,
> >
> > Here's the traceback. Thanks.
> >
> > -Jason
> >
> > Time 2005/02/10 19:02:49.068 GMT
> > User Name (User Id) williamsjj at testsite.com
> > (williamsjj at testsite.com)
> > Request URL https://portal.testsite.com/index_html
> > Exception Type KeyError
> > Exception Value 1108062160
> >
> > Traceback (innermost last):
> >
> > * Module ZPublisher.Publish, line 101, in publish
> > * Module ZPublisher.mapply, line 88, in mapply
> > * Module ZPublisher.Publish, line 39, in call_object
> > * Module Shared.DC.Scripts.Bindings, line 306, in __call__
> > * Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec
> > * Module Products.PageTemplates.ZopePageTemplate, line 222, in _exec
> > * Module Products.PageTemplates.PageTemplate, line 96, in pt_render
> > <ZopePageTemplate at /Artemis/index_html>
> > * Module TAL.TALInterpreter, line 190, in __call__
> > * Module TAL.TALInterpreter, line 234, in interpret
> > * Module TAL.TALInterpreter, line 637, in do_condition
> > * Module TAL.TALInterpreter, line 234, in interpret
> > * Module TAL.TALInterpreter, line 484, in do_insertText_tal
> > * Module Products.PageTemplates.TALES, line 227, in evaluateText
> > * Module Products.PageTemplates.TALES, line 221, in evaluate
> > URL: /Artemis/index_html
> > Line 62, Column 6
> > Expression: <PythonExpr here.set_sorting('date','desc')>
> > Names:
> >
> > {'container': <Folder instance at 415a0c80>,
> > 'context': <Folder instance at 415a0c80>,
> > 'default': <Products.PageTemplates.TALES.Default instance at
> > 0x40e824ac>,
> > 'here': <Folder instance at 415a0c80>,
> > 'loop': <SafeMapping instance at 413679f0>,
> > 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter
> > instance at 0x40e8238c>,
> > 'nothing': None,
> > 'options': {'args': ()},
> > 'repeat': <SafeMapping instance at 413679f0>,
> > 'request': <HTTPRequest, URL=https://portal.testsite.com/index_html>,
> > 'root': <Application instance at 41591dd0>,
> > 'template': <ZopePageTemplate at /Artemis/index_html>,
> > 'traverse_subpath': [],
> > 'user': williamsjj at testsite.com}
> >
> > * Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__
> > __traceback_info__: here.set_sorting('date','desc')
> > * Module Python expression "here.set_sorting('date','desc')", line
> > 1, in <expression>
> > * Module Shared.DC.Scripts.Bindings, line 306, in __call__
> > * Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec
> > * Module Products.PythonScripts.PythonScript, line 323, in _exec
> > * Module None, line 9, in set_sorting
> > <PythonScript at /Artemis/set_sorting>
> > Line 9
> > * Module ZPublisher.HTTPRequest, line 1218, in __getattr__
> > * Module ZPublisher.HTTPRequest, line 1178, in get
> > * Module Products.Sessions.SessionDataManager, line 94, in
> > getSessionData
> > * Module Products.Sessions.SessionDataManager, line 181, in
> > _getSessionDataObject
> > * Module Products.Transience.Transience, line 843, in
> > new_or_existing
> > * Module Products.Transience.Transience, line 446, in __setitem__
> >
> > KeyError: 1108062160
> >
> > Display traceback as text
> >
> > REQUEST
> > form
> > __ac_persistent '1'
> > came_from 'https://portal.testsite.com/index_html'
> > submit 'Sign In'
> > cookies
> > _ZopeId '01406898A1sl9qU3LHc'
> > lazy items
> > SESSION <bound method SessionDataManager.getSessionData of
> > <SessionDataManager instance at 415a0b00>>
> > other
> > __ac_persistent '1'
> > TraversalRequestNameStack []
> > AUTHENTICATED_USER williamsjj at testsite.com
> > URL 'https://portal.testsite.com/index_html'
> > VirtualRootPhysicalPath ('', 'Artemis')
> > VIRTUAL_URL 'https://portal.testsite.com/index_html'
> > SERVER_URL 'https://portal.testsite.com'
> > AUTHENTICATION_PATH 'Artemis/VirtualHostMonster//'
> > traverse_subpath []
> > PUBLISHED <ZopePageTemplate at /Artemis/index_html>
> > came_from 'https://portal.testsite.com/index_html'
> > ACTUAL_URL 'https://portal.testsite.com/index_html'
> > VIRTUAL_URL_PARTS ('https://portal.testsite.com', 'index_html')
> > URL0 https://portal.testsite.com/index_html
> > URL1 https://portal.testsite.com
> > BASE0 https://portal.testsite.com
> > BASE1 https://portal.testsite.com
> > BASE2 https://portal.testsite.com/index_html
> > environ
> > HTTP_MAX_FORWARDS '10'
> > HTTP_REFERER
> > 'https://portal.testsite.com/login/login_form?came_from=https%3A//
> > portal.testsite.com/index_html&retry=&disable_cookie_login__=1'
> > HTTP_ACCEPT_LANGUAGE 'en-us,en;q=0.5'
> > SERVER_SOFTWARE 'Zope/(Zope 2.7.4-0, python 2.3.3, linux2) ZServer/1.1'
> > SCRIPT_NAME ''
> > REQUEST_METHOD 'POST'
> > PATH_INFO
> > '/VirtualHostBase/https/portal.testsite.com:443/Artemis/
> > VirtualHostRoot/index_html'
> > SERVER_PROTOCOL 'HTTP/1.1'
> > channel.creation_time 1108062158
> > HTTP_X_FORWARDED_SERVER 'portal.testsite.com'
> > CONTENT_LENGTH '144'
> > HTTP_ACCEPT_CHARSET 'ISO-8859-1,utf-8;q=0.7,*;q=0.7'
> > HTTP_USER_AGENT 'Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US;
> > rv:1.7) Gecko/20040707 Firefox/0.9.2'
> > HTTP_COOKIE '_ZopeId="01406898A1sl9qU3LHc"'
> > SERVER_NAME 'portal1.testsite.com'
> > REMOTE_ADDR '127.0.0.1'
> > HTTP_VIA '1.1 portal.testsite.com'
> > PATH_TRANSLATED
> > '/VirtualHostBase/https/portal.testsite.com:443/Artemis/
> > VirtualHostRoot/index_html'
> > SERVER_PORT '8080'
> > HTTP_HOST 'localhost:8080'
> > HTTP_ACCEPT
> > 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/
> > plain;q=0.8,image/png,*/*;q=0.5'
> > GATEWAY_INTERFACE 'CGI/1.1'
> > HTTP_X_FORWARDED_FOR '66.213.154.102'
> > HTTP_X_FORWARDED_HOST 'portal.testsite.com'
> > CONTENT_TYPE 'application/x-www-form-urlencoded'
> > HTTP_ACCEPT_ENCODING 'gzip,deflate'
> >
> >
> > On Thu, 10 Feb 2005 13:46:34 -0500, Chris McDonough <chrism at plope.com>
> > wrote:
> >> Hi Jason,
> >>
> >> Please keep the discussion on the list, thanks...
> >>
> >> No, there are no other products that need to be updated. At this
> >> point, we'll need to see a full traceback (see the "error_log" object)
> >> to figure out what's happening.
> >>
> >> On Thu, 2005-02-10 at 13:44, Jason J. W. Williams wrote:
> >>> Yes I am. I was using 2.7.2 when the issue cropped up so I upgraded
> >>> both ZEO clients and the ZEO server to 2.7.4 last night. Same problem
> >>> occurs. Are there any products that need to be upgraded outside of
> >>> Zope? Thank you!
> >>>
> >>> -Jason
> >>>
> >>>
> >>> On Thu, 10 Feb 2005 13:27:31 -0500, Chris McDonough
> >>> <chrism at plope.com> wrote:
> >>>> Hi Jason,
> >>>>
> >>>> Coding errors causing this symptom were present in Zopes before
> >>>> 2.7.3
> >>>> but none have been reported to my knowledge thereafter. Are you
> >>>> still
> >>>> having this issue with 2.7.4?
> >>>>
> >>>> On Thu, 2005-02-10 at 11:44, Jason J. W. Williams wrote:
> >>>>> Hello,
> >>>>>
> >>>>> I hope this is the correct place to post this question as I
> >>>>> have
> >>>>> not been able to resolve the problem via archives or Google. We
> >>>>> have a
> >>>>> setup with one ZEO server and two ZEO clients. The goal is to put a
> >>>>> load balancer in front of the two clients and have them both
> >>>>> operate
> >>>>> off the same session data so that it appears as a single server to
> >>>>> the
> >>>>> end user. We setup the clients according to:
> >>>>> http://longsleep.org/howto/sharesessionwithzeo
> >>>>>
> >>>>> However, when we run the setup whenever ZEO client 1 is hit for a
> >>>>> page
> >>>>> a KeyError is generated. I assume this is because ZEO client 2 set
> >>>>> up
> >>>>> the session and the data is not being shared. I upgraded us to Zope
> >>>>> 2.7.4 last night in an attempt to fix the problem. Any help is
> >>>>> greatly
> >>>>> appreciated. Thank you in advance.
> >>>>>
> >>>>> Best Regards,
> >>>>> Jason
> >>>>> _______________________________________________
> >>>>> Zope maillist - Zope at zope.org
> >>>>> http://mail.zope.org/mailman/listinfo/zope
> >>>>> ** No cross posts or HTML encoding! **
> >>>>> (Related lists -
> >>>>> http://mail.zope.org/mailman/listinfo/zope-announce
> >>>>> http://mail.zope.org/mailman/listinfo/zope-dev )
> >>>>>
> >>>>
> >>>>
> >>>
> >>
> >>
> > _______________________________________________
> > Zope maillist - Zope at zope.org
> > http://mail.zope.org/mailman/listinfo/zope
> > ** No cross posts or HTML encoding! **
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> >
>
>
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