[Mailman-Users] turn on tracing?

Mark Sapiro mark at msapiro.net
Fri May 20 16:12:39 EDT 2016

On 05/20/2016 12:04 PM, Richard Shetron wrote:
> That only tells me about long running processes, not ones that start and
> stop/die very quickly.  There are programs that aren't starting due to
> permission problems like qrunner.

The qrunners are started by mailmanctl which shoud be started as root
but then sets itself to the user:group that were configured with the
configure options --with-username and --with-groupname. These default to
'mailman'. You can find the values in Defaults.py in the settings for

> The latest web page now says (which
> doesn't tell me what the eid/gid were when the problem occured):

The web server is a persistent process, it's user:group on Ubuntu are
usually www_data, however, the web server invokes a CGI wrapper, e.g.
/var/lib/mailman/cgi-bin/admin which should be SETGID and group =
Mailman's group.

> Bug in Mailman version 2.1.21rc2
> We're sorry, we hit a bug!
> If you would like to help us identify the problem, please email a copy
> of this page to the webmaster for this site with a description of what
> happened. Thanks!
> Traceback:
> Traceback (most recent call last):
>   File "/var/lib/mailman/scripts/driver", line 86, in run_main
>     immediate=1)
>   File "/var/lib/mailman/Mailman/Logging/StampedLogger.py", line 52, in
> __init__
>     Logger.__init__(self, category, nofail, immediate)
>   File "/var/lib/mailman/Mailman/Logging/Logger.py", line 50, in __init__
>     self.__get_f()
>   File "/var/lib/mailman/Mailman/Logging/Logger.py", line 68, in __get_f
>     1)
>   File "/usr/lib/python2.7/codecs.py", line 878, in open
>     file = __builtin__.open(filename, mode, buffering)
> IOError: [Errno 13] Permission denied: '/var/lib/mailman/logs/error'

This is a secondary error because of the inability to write the real
error to the error log. Is the error log writable by Mailman's group?

Is there something like apparmor preventing access?

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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