On 4/09/09 10:31 PM, Stanisław Pitucha wrote:
2009/9/4 Olivier<[email protected]>:
From an off-list comment, I think the explanation is :
- some apps are opening and closing log files before and after each writing,
- some are leaving log files open.
When a log file is currently rotated, both apps can't append anything
anymore to log files.
That's not correct (on a *nix system anyways). In the second case, if
some app holds a descriptor of an open file and you move the file
around in the same filesystem, nothing changes. You can rename 'log'
to 'log.1', but it doesn't change the descriptor and the application
will still write to the file (it's just named differently).
The logger restart just does a { close(); open(); } and you're logging
to a new 'log' again. This way you don't lose any messages during the
rotation.
On Sat, 5 Sep 2009, Matt Riddell wrote:
I think the potential problem comes if log rotation creates a new file,
compresses the old one to a .tar.gz file and then creates a new one - if
Asterisk doesn't know about this, it will not be able to log to the new
file.
If we're interested in "I thinks" :)
I think applications that create log files are a PITA -- so last century,
so limiting.
Every application creating a different log file in a different format.
Every application solving the same problems (i.e. file rotation) over and
over again. Such a waste.
Syslog is ubiquitous, well documented, and offers flexibility beyond most
applications.
Thank God Asterisk can be configured to use syslog. I think Asterisk
should "deprecate" logging to files to "encourage" users to "get with best
practices."
Not looking for a flame-fest, but why are you using application specific
log files?
--
Thanks in advance,
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