How do nagios logs rotate

[Marc Powell]

> -----Original Message-----
> From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
> admin at lists.sourceforge.net] On Behalf Of scott_yem at agilent.com
> Sent: Wednesday, April 13, 2005 8:14 PM
> To: nagios-users at lists.sourceforge.net
> Subject: RE: [Nagios-users] How do nagios logs rotate
> 
> I think I was just too vague.  I know how and where the logs are
defined
> to rotate, what I am looking for is the command they use so I can
append a
> function to HUP my process reading the tail of the file.  I have
> configured Nagios on Redhat 7.3, Fedora Core 2 & 3, RHEL WS 3 and
Debian
> Woody and Sarge with Netsaint 0.0.7, Nagios 1.2, 1.3(Debian), 2.0a1,
> 2.0b2, and 2.0b3.  I am currently working on 2.0b3 on RHEL WS 3.
Although
> I like 1.3 on Debian Sarge, I think the newer version is better for my
> purposes.  I have not seen any logging information regarding how the
logs
> are rotated, but I believe that they are using logrotate.  If this is
the

Nagios handles all of the log rotations internally by the nagios daemon
itself. No outside programs such as logrotate are used. See
base/logging.c if you're interested.


> I guess another option would be to set the log rotation to none and
use
> the logrotate function, but I think this will have adverse affects to
the
> statistics.  Please help.

You are correct. External manipulation of the log files outside of the
rotation times that nagios is designed for would likely be problematic.
I've experienced problems switching from one rotation period to another,
day to week for example.

--
Marc


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