[Nagios-devel] Forcing hard state change notifications

atonns at mail.ivillage.com atonns at mail.ivillage.com
Thu Dec 4 16:02:01 UTC 2003


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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