Nagios hangs on startup

[Eric Cables]

Thanks for the reply.  I ended up rebooting the box, which fixed the problem
temporarily, but it has resurfaced again.  When I drill down into a service
check it says that the next check will be processed at a time that has
already passed.

For example:
Last Check: 13:09
Next Check: 13:11

The current time on, however, is 14:02...

When I try to stop the process via the init script I get the following:
[nagios at psdbsd01 (~/var)]$ /usr/local/etc/rc.d/nagios.sh stop
Stopping nagios: ..........
Warning - nagios did not exit in a timely manner

The cmd file does not exist prior to attempting to start, after stopping,
but I back to the problem where Nagios will not start and instead hangs
indefenitely when requested to start.

[nagios at psdbsd01 (~/var)]$ /usr/local/etc/rc.d/nagios.sh start
Starting nagios: <-- hangs here

I'm not sure about the lock file, this is a FreeBSD install from source, and
I don't see a /var/lock directory at all.  Everything Nagios related is
installed in /usr/local/nagios as far as I can tell.

There doesn't seem to be anything of interest in nagios.log, as the last
entry just reports a notification that was sent out prior to Nagios losing
its functionality.

Any other tips?  I'm not exactly sure why a reboot fixed this before, but
any speculation is appreciated.

-- Eric Cables


On Thu, Jul 1, 2010 at 6:05 AM, Jim Avery <jim at jimavery.me.uk> wrote:

> On 1 July 2010 01:18, Eric Cables <ecables at gmail.com> wrote:
> > Sorry to bug the list, but my 3.2.1 installation of Nagios has all of a
> > sudden stopped starting.  I noticed a lack of alerts over the last day,
> and
> > when I checked the GUI it indicated that the "next" scheduled check for a
> > service was in the past.  I proceeded to stop/start Nagios, but both have
> > failed.
> >
> > Currently when I try to start Nagios using the init script it just hangs:
> > [nagios at psdbsd01 (~/etc)]$ /usr/local/etc/rc.d/nagios.sh start
> > Starting nagios:
> >
> > I've enabled debug logging (-1 level, 2 verbosity), but this is all that
> > shows up in nagios.debug when I issue the above start request (uid 1003 =
> > nagios):
> > [1277942532.270096] [001.0] [pid=46503] drop_privileges() start
> > [1277942532.270194] [004.0] [pid=46503] Original UID/GID: 1003/1003
> >
> > I can run nagios -v nagios.cfg, and it reports no errors.
> >
> > Here's the output if I run nagios nagios.cfg manually, without invoking
> > daemon mode:
> > [nagios at psdbsd01 (~/etc)]$ ../bin/nagios ./nagios.cfg
> >
> > Nagios Core 3.2.1
> > Copyright (c) 2009-2010 Nagios Core Development Team and Community
> > Contributors
> > Copyright (c) 1999-2009 Ethan Galstad
> > Last Modified: 03-09-2010
> > License: GPL
> >
> > Website: http://www.nagios.org
> >
> > Any tips?  I am not sure what the next steps are since both logging and
> > debugging aren't producing output, and Nagios has never taken more than a
> > few seconds to start in the past.
>
> What, if anything, shows up in your nagios.log file?
>
> Check you don't already have a nagios daemon running (ps -ef | grep
> nagios) before you start it again.
>
> Check that the lock file isn't there from the previous invocation (if
> you did a standard install from source tarballs the file is
> /var/lock/subsys/nagios).
>
> Check that the Nagios command file /usr/local/nagios/var/rw/nagios.cmd
> doesn't exist before you start nagios.
>
> Use full pathnames when attempting to verify your config, for example:
>
> /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
>
>
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