[mp2] Possible bug with "PerlOptions +Parent" with mod_perl 2.0.4 and mod_perl 2.0.5 (Ubuntu packages)

[Luca Maranzano <li...@gmail.com>]

Hello all,

I've setup two instances of the popular OTRS software using the PerlOptions
+Parent to have two separate interpreter pool in 2 distinct Virtual Hosts.

Under Ubuntu 8.04 LTS all was working fine, with mod_perl2 version 2.0.3
provided by Ubuntu 8.04.

I'm not sure it is a real bug with mod_perl2 but after a lot of tests I'm
getting crazy and I don't know where to ask elsewhere :-)

After the upgrade to 10.04 with mod_perl 2.0.4 and perl 5.10 (but also
under Ubuntu 12.04 with mod_perl version 2.0.5 and perl 5.14) I'm facing
the following issue,
- there are 2 virtual hosts for the two OTRS sites, both with the
PerlOptions +Parent statement
- each site has its own path, there are no shared files
- when both sites are enabled, the second site is not working in some pages
with an error like this (from the apache error log of the virtual host):
[Mon May 06 16:30:52 2013] [error] encountered object 'false', but neither
allow_blessed nor convert_blessed settings are enabled at
/opt/otrspath1/Kernel/System/JSON.pm line 106.\n
- enabling only 1 site at a time: all is working fine
- inverting the order of the 2 sites (i.e. swapping them) in the apache
configration: the first is working and the second gets the error above
- under Ubuntu 8.04 this same configuration was working ! :-/

I've searched in the changelog of mod_perl2 but I didn't find anything
useful.
I cannot say it is an OTRS issue since each singular site is working fine,
but I'm sure that OTRS needs to have a separate pool since the modules are
the same, so for the moment the main suspect seems to be mod_perl2 :-)

How can I debug this kind of error?

Please let me know if you need other info about the configuration.
Thanks in advance for your support.
Best regards,
Luca  Maranzano

Re: [mp2] Possible bug with "PerlOptions +Parent" with mod_perl 2.0.4 and mod_perl 2.0.5 (Ubuntu packages)

[Luca Maranzano <li...@gmail.com>]

Hello, may be I've found the root cause of the problem: it seems due to the
apache2-mpm-prefork package, since if I install the apache2-mpm-worker the
same configuration is working as expected!
I can reproduce this in a sistematic way.

Any idea about the reason of this ?

Thanks,
Luca




On Wed, May 8, 2013 at 11:13 PM, Luca Maranzano <li...@gmail.com> wrote:

> Hello all,
>
> I've setup two instances of the popular OTRS software using the
> PerlOptions +Parent to have two separate interpreter pool in 2 distinct
> Virtual Hosts.
>
> Under Ubuntu 8.04 LTS all was working fine, with mod_perl2 version 2.0.3
> provided by Ubuntu 8.04.
>
> I'm not sure it is a real bug with mod_perl2 but after a lot of tests I'm
> getting crazy and I don't know where to ask elsewhere :-)
>
> After the upgrade to 10.04 with mod_perl 2.0.4 and perl 5.10 (but also
> under Ubuntu 12.04 with mod_perl version 2.0.5 and perl 5.14) I'm facing
> the following issue,
> - there are 2 virtual hosts for the two OTRS sites, both with the
> PerlOptions +Parent statement
> - each site has its own path, there are no shared files
> - when both sites are enabled, the second site is not working in some
> pages with an error like this (from the apache error log of the virtual
> host):
> [Mon May 06 16:30:52 2013] [error] encountered object 'false', but neither
> allow_blessed nor convert_blessed settings are enabled at
> /opt/otrspath1/Kernel/System/JSON.pm line 106.\n
> - enabling only 1 site at a time: all is working fine
> - inverting the order of the 2 sites (i.e. swapping them) in the apache
> configration: the first is working and the second gets the error above
> - under Ubuntu 8.04 this same configuration was working ! :-/
>
> I've searched in the changelog of mod_perl2 but I didn't find anything
> useful.
> I cannot say it is an OTRS issue since each singular site is working fine,
> but I'm sure that OTRS needs to have a separate pool since the modules are
> the same, so for the moment the main suspect seems to be mod_perl2 :-)
>
> How can I debug this kind of error?
>
> Please let me know if you need other info about the configuration.
> Thanks in advance for your support.
> Best regards,
> Luca  Maranzano
>
>
>