> -----Ursprüngliche Nachricht----- > Von: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Im > Auftrag von Ryan Steele > Gesendet: Mittwoch, 23. Juli 2008 15:04 > An: [email protected] > Betreff: [Nagios-users] Bad File Descriptors > > Hey folks. > > I recently had a co-worker present me with a problem > regarding the NSCA plugin. It seems that under certain > cirumstances (unfortunately, those circumstances are unknown > to him and thus me as well), NSCA just kind of hangs (an > strace shows basically an idle screen) and these sorts of > errors start flooding the daemon log: > > > nsca[28640]: Network server accept failure (9: Bad file descriptor) > > > The quick fix is to restart NSCA, and then everything hums > along until the next incident. > > > It's possible there's a bad block on the disk or something, > and an fsck > might yield some clues, but I haven't had the chance to schedule > downtime to do that yet. It's also possible it's hitting the > fd limit, > but in the time I've been monitoring it, I don't see any > leaking of fd's > that would point to that as a suspect (the limit is the default of > 1024). Additionally, according to ulimit, the pipe size is 4k, which > could be an issue as the nsca clients write to a pipe on the server > (nagios.cmd), but that's only an option configurable at kernel > compile-time and I expect I'd see more widespread reports of problems > from other folks in the community if overflowing the default > pipe buffer > was really the issue. > > I've seen some sparse reports on Google of a similar problem, but > they're just that - sparse. Which kind of makes me think it's not > Nagios or NSCA, but a bad block on the hard drive. Anybody have a > similar experience or opinion?
We had similar problems when there were a lot of passiv services and it seemed that NSCA was simply getting overloaded. To be honest, I am not sure that we were getting "Bad file descriptor" but NSCA would not accept any new connection and the solution was to restart it. Regards, Jim Mohr ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Nagios-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
