[ZODB-Dev] Zope 2.8.1 w Zeo 3.4.1 fails where standalone Zope 2.8.1works

[Tim Peters]

[Erik Lundh]
> I have used Zeo with Zope 2.7.6 for some time now. I currenty run Plone
> 2.05 on Zope 2.7.6 with zeo in production. Zope and Zeo runs on the same
> machine running Debian Linux 3.0 (i386). I started using zeo to make
> debugging of a simple skin product easier.
>
> Now I am moving to a fresh server w Debian Linux 3.1 where I am trying
> the same setup with Zope 2.8.1.
>
> Zope 2.8.1 with Zeo 3.4.1 fails utterly.
>
> I can some times get instances running but eventually get transactions
> failures, lost connections, and poskeyerrors.
>
> It seems like smooth sailing when I run Zope 2.8.1 standalone.
>
> ...

I expect you'd get better advice on a Zope list, like

    http://mail.zope.org/mailman/listinfo/zope

If it's an identifiable problem with ZODB/ZEO 3.4.1, then this (zodb-dev) is
a good place to discuss it, but since there are no other reports of this I
have to suspect it's due to a problem(s) in your specific Zope and/or Plone
configuration.  For example,

...

> Another fishy thing is that zeo fails to start when you uncomment the
> line
> #user zope
> in zeo.conf

suggests OS-level permission problems (do you get log messages?  exceptions?
the process hangs?  ... "fails to start" could mean a lot of things).

> Are there any additional test suites that I can run to nail down my
> problem? I did run the standard make tests in Zope 2.8.1 with no
> failures.

You could try running test.py with the "--all" switch, and that will run
more ZEO connection tests.  Those are ZEO unit tests, though.  AFAIK, there
is nothing in the test suite that specifically tries to run Zope with ZEO.