Nagios ignores broken file descriptor?

[Steven D. Morrey]

Maybe have it email someone if that happens?
Honestly though, if it's not logging then it's not performing it's
critical role in the network, since the monitoring results are what we
care about, not the act of monitoring itself.
Having it go down completely might be the best option in such a case.
Maybe this could be a config file option in future releases.

FYI we found the source of the scsi error.
Turns out it was a bad driver that shipped with SLES 9.

Sincerely,
Steven D. Morrey

On Wed, 2008-11-19 at 01:13 -0700, Andreas Ericsson wrote:
> Steven D. Morrey wrote:
> > Here is an strace on the same box from just a few minutes ago.
> > As you can see whats happening is Nagios does not appear to be catching
> > the error about trying to write to a read only file system.
> > 
> > nanosleep({1, 0},{1, 0})               = 0
> > kill(-7799, SIGKILL)                    = -1 ESRCH (No such process)
> > gettimeofday({1227029613, 509530}, NULL) = 0
> > close(10)                               = 0
> > open("/usr/local/nagios/var/nagios.log", O_RDWR|O_APPEND|O_CREAT, 0666)
> > = -1 EROFS (Read-only file system)
> 
> Actually, it does catch it (which is why it doesn't try to write to it),
> but since it's the logging API, there's not much Nagios can do about it
> except crashing out. Given Nagios' role in the network, it's considered
> better to keep running with logging disabled than to silently die without
> leaving a core-dump or some other entry-point for debugging.
> 
> In other words, this is unfortunate, but by design. If you have a solution,
> I'm all ears.
> 


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