[log4perl-devel] multiple process, permissions and missing log output

[Martin E. <mar...@ea...>]

Hi,

I've been using Log::Log4perl for ages now in a set of CPAN modules we 
wrote and internally in a project here. All has been ok, it works well - 
thank you.

This issue is mostly related to Log::Dispatch::FileRotate|File but I am 
posting here since I may need advice on an alternative.

Our log files are getting pretty large and after seeing a post on this 
list I decided to try Log::Dispatch::FileRotate. It seemed to work fine 
at first. The logging is in a single module, this module is used in 
multiple places/processes under different uids and we have a single 
config file. One of the places is code running under modperl, the other 
is a daemon in perl.

The first problem was due to umasks and first to start (the daemon or 
modperl) created the file and the other couldn't open it. I tried

log4perl.appender.X1.umask = sub { 0000 }

but it would seem Log::Dispatch::FileRotate does not know umask. I then 
discovered "permissions" so did:

log4perl.appender.X1.permissions = sub { 0666 }

and this appears to work until another uid comes along in which case you 
get:

Cannot chmod /tmp/dbix.log to 438: Operation not permitted at 
/usr/lib/perl5/site_perl/5.8.8/Log/Dispatch/File.pm line 96

I don't get this as Log::Dispatch::File says:

"If the file does not already exist, the permissions that it should be 
created with."

so I presume this is a bug.

Am I wasting my time here? Would I be better going back to 
Log::Log4perl::Appender::File, using ".umask" and some external file 
rotator? Any recommendations?

Martin
-- 
Martin J. Evans
Easysoft Limited
http://www.easysoft.com