[Mailman-Users] "Mailman CGI error!!! Operation not permitted" - after upgrading Apache to 2.4

Tomasz Chmielewski mangoo at wpkg.org
Wed Jun 25 17:32:19 CEST 2014

On 2014-06-25 16:59, Mark Sapiro wrote:
> On 06/25/2014 03:09 AM, Tomasz Chmielewski wrote:
>> I've updated Apache to 2.4, and my mailman installation refuses to 
>> work
>> with the following information:
>>    Mailman CGI error!!!
>>    The Mailman CGI wrapper encountered a fatal error. This entry is
>> being stored in your syslog:
>>    Operation not permitted
> What if anything is in the Apache error_log?

Absolutely nothing in Apache error_log.

I found the cause:

It works fine if I use apache2-mpm-prefork, but fails if I use 

ITK lets you choose a user which executes any given vhost and I prefer 
to run this version.

With older Apache version, Mailman was working fine with Apache-ITK. 
Here, something's missing and doesn't work.

I'll try your other suggestions to see if I can get more information.

>> The only things I see in logs is basically the same as above:
>> Jun 25 11:59:37 web1 Mailman cgi-wrapper (listinfo): Operation not
>> permitted
>> Jun 25 12:01:15 web1 Mailman cgi-wrapper (admin): Operation not 
>> permitted
>> I've tried stracing Apache process to see where it might get 
>> permission
>> issues, but I don't see anything like it.
>> Does anyone have a clue how to fix it?
> The cgi-wrapper is invoked by the web server. It checks the callers
> group and then calls scripts/driver which in turn runs the actual
> Mailman/Cgi/* script.
> Normally, exceptions encountered by the admin.py, listinfo.py, etc.
> script are reported by the driver with a full traceback.
> It seems in this case the driver script encounters the Operation not
> permitted exception either before or in the process of trying to print 
> a
> traceback.
> See the comments at the beginning of scripts/driver.
> You can manually run as root or a user in Mailman's group
> python /path/to/scripts/driver listinfo
> and see what that produces.

[1] http://mpm-itk.sesse.net/

Tomasz Chmielewski

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