[Nagios-devel] Forcing hard state change notifications

atonns at mail.ivillage.com atonns at mail.ivillage.com
Fri Dec 12 10:58:03 UTC 2003


woo! I manually applied the changes to checks.c, notifications.c and
sehandlers.c to my Nagios 1.1 tarball - and it looks like everything is
working as expected (ie: I got one single notification for a WARNING and one
single notification for a CRITICAL).

Thanks, Ethan.

--
"Computer science is as much about computers as
        astronomy is about telescopes" -- Edsger Dijkstra
---------------------------------------------------------
Anthony Tonns, UNIX Administrator - atonns at mail.ivillage.com


> -----Original Message-----
> From: Ethan Galstad [mailto:nagios at nagios.org]
> Sent: Thursday, December 04, 2003 8:55 PM
> To: nagios-devel at lists.sourceforge.net
> Subject: Re: [Nagios-devel] Forcing hard state change notifications
> 
> 
> Arghh - looks like this is a bug, as notifications should get reset
> when a state change occurs.  I'll post bug fixes to the 1.x and 2.0
> (HEAD) branches shortly.  Thanks for the note.
> 
> 
> On 4 Dec 2003 at 19:00, atonns at mail.ivillage.com wrote:
> 
> >
> > I sent in this post almost a month ago. I'm wondering if anyone
> > thinks it's a feature worth implementing. I'm not running the latest
> > HEAD (I'm at v1.1 right now) but I'd be willing to setup a test
> > instance with the HEAD, make the alterations, etc. - if 
> it's going to
> > be merged into the codebase. It's pretty hard-core when it comes to
> > the nitty gritty of the notifications logic. It's taken me some time
> > just to figure out. -- "Computer science is as much about 
> computers as
> >
> >  astronomy is about telescopes" -- Edsger Dijkstra
> > ---------------------------------------------------------
> > Anthony Tonns, UNIX Administrator - atonns at mail.ivillage.com
> >
> > > -----Original Message-----
> > > From: atonns at mail.ivillage.com [mailto:atonns at mail.ivillage.com]
> > > Sent: Monday, November 10, 2003 6:56 PM To:
> > > nagios-devel at lists.sourceforge.net Subject: 
> [Nagios-devel] Different
> > > paging for different levels
> > >
> > >
> > > Below is a post that I made to the nagios-users list over a
> > > week ago. I
> > > thought about it, and figured that nagios-devel would be the
> > > better place
> > > for it.
> > >
> > > Summary: I'm thinking of some global config variable named
> > > "force_hard_state_change_notification". It would be a
> > > supplement for people
> > > that have "notification_interval=0" to suppress periodic
> > > notifications when
> > > the hard state is the same not-OK state until recovery, but
> > > DO want to know
> > > about other hard state changes while not-OK (ie: a transition
> > > from WARNING
> > > to CRITICAL).
> > >
> > > --- post follows ---
> > >
> > > Whoops. Looks like my assessment was not 100% accurate.
> > >
> > > When a service goes from WARNING to CRITICAL it _is_ a hard
> > > state change.
> > > The problem is that I have notification_interval=0 - which
> > > means since it's
> > > already sent single notification for a non-OK state (the
> > > WARNING) it will
> > > not send another notification for ANY OTHER non-OK state (the
> > > CRITICAL).
> > >
> > > What might be the "feature addition" that would make this
> > > work for me would
> > > be some option to enable some additional logic so that even if the
> > > notification_interval=0, Nagios should ignore the time 
> interval and
> > > attempt to send a immediate notification (assuming all the other
> > > checks
> > like
> > > downtime, flapping, etc. pass) whenever there's hard state change.
> > >
> > > I'd like to work on adding this feature (I've spent a lot of
> > > time reading
> > > the source at this point) but I don't want to add logic where
> > > it doesn't
> > > belong. There's a lot of checks going on with
> > > "check_service_notification_viability" in notifications.c, but
> > there's
> > > nothing about how to determine a hard state change. That's
> > > done in checks.c
> > > as part of "reap_service_checks". The "semi-psuedo code" for
> > > my suggested
> > > change to "check_service_notification_viability" would be:
> > >
> > > /* dont notify contacts about this service problem again if
> > > the notification
> > > interval is set to 0
> > > * unless forcing notification due to a hard state change */
> > > if(svc->current_state!=STATE_OK && svc-
> > >no_more_notifications==TRUE){
> > > if(force_hard_state_change_notification == FALSE ||
> > > (svc->current_state!=svc->last_state &&
> > > svc->current_attempt>=svc->max_attempts)) {
> > > #ifdef DEBUG4
> > > printf("\tWe shouldn't re-notify contacts
> > > about this service
> > > problem!\n");
> > > #endif
> > > return ERROR;
> > > }
> > > #ifdef DEBUG4
> > > else {
> > > printf("\tNotifications about hard state changes
> > were
> > > forced!\n"0;
> > > }
> > > #endif
> > > }
> > >
> > > --
> > > "Computer science is as much about computers as
> > > astronomy is about telescopes" -- Edsger Dijkstra
> > > ---------------------------------------------------------
> > > Anthony Tonns, UNIX Administrator - atonns at mail.ivillage.com
> > >
> > >
> > > > -----Original Message-----
> > > > From: atonns at mail.ivillage.com [mailto:atonns at mail.ivillage.com]
> > > > Sent: Friday, October 24, 2003 12:22 PM To:
> > > > nagios-users at lists.sourceforge.net Subject: RE: [Nagios-users]
> > > > Different paging for different levels
> > > >
> > > >
> > > > Matter of factly, your situation doesn't even work properly.
> > > >
> > > > ie:
> > > > If a service goes from OK to WARNING this is a hard state
> > > > change, and it
> > > > will notify via email.
> > > > If it then goes from WARNING to CRITICAL this is NOT a hard
> > > > state change and
> > > > it will NOT notify via pager.
> > > >
> > > > I have not found a solution for this problem. However, I
> > > > would really like
> > > > to be able to handle sending notification via pager when a
> > > > service enters a
> > > > CRITICAL state without adding an ocsp_command.
> > > >
> > > > --
> > > > "Computer science is as much about computers as
> > > > astronomy is about telescopes" -- Edsger Dijkstra
> > > > ---------------------------------------------------------
> > > > Anthony Tonns, UNIX Administrator - atonns at mail.ivillage.com
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: Chris Gill [mailto:cgill at NewWorldApps.com]
> > > > > Sent: Thursday, October 23, 2003 11:32 AM
> > > > > To: 'nagios-users at lists.sourceforge.net'
> > > > > Subject: [Nagios-users] Different paging for different levels
> > > > >
> > > > >
> > > > > Hi all,
> > > > >  We've moved to Nagios here over the last few months,
> > > > > and things have
> > > > > been going swimingly. There's one question, though, that's
> > > > > cropped up that I can't seem to figure out. Is there a way to
> > > > > send different types of alerts based on severity. IE: send
> > > > > warning alerts by e-mail, and critical alerts by 
> pager. The only
> > > > > way I've seen to do this is to set up two contacts 
> for each user
> > > > > (bob-email, bob-pager). This seems inordinately 
> clunky, though.
> > > > > Is there a better way to do it?
> > > > >
> > > > > 
> ----------------------------------------------------------------
> > -
> > > > > Christopher P. Gill, Systems Engineer, New World Apps
> > > > > cgill at newworldapps.com
> > > > > 703-856-7268 (Cell/Business)
> > >
> > > --
> > > "Computer science is as much about computers as
> > > astronomy is about telescopes" -- Edsger Dijkstra
> > > ---------------------------------------------------------
> > > Anthony Tonns, UNIX Administrator - atonns at mail.ivillage.com
> > >
> > >
> > > -------------------------------------------------------
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> > > https://lists.sourceforge.net/lists/listinfo/nagios-devel
> > >
> 
> 
> 
> Ethan Galstad,
> Nagios Developer
> ---
> Email: nagios at nagios.org
> Website: http://www.nagios.org
> 
> 
> 
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