Downtime discrepancy

Andrew Davis nccomp at gmail.com
Tue May 19 20:14:24 CEST 2009


Thanks. The one time I don't read the docs first and that proves to be 
the solution...

  A. Davis
  Email:     nccomp at gmail.com

  "There is no limit to what a man can accomplish
   if he doesn't care who gets the credit." - Ronald Reagan



Chris Waters wrote:
> From the docs:
>  
>
> *_Fixed vs. Flexible Downtime_*
>
> When you schedule downtime for a host or service through the web 
> interface you'll be asked if the downtime is fixed or flexible. Here's 
> an explanation of how "fixed" and "flexible" downtime differs:
>
> "Fixed" downtime starts and stops at the exact start and end times 
> that you specify when you schedule it. Okay, that was easy enough...
>
> "Flexible" downtime is intended for times when you know that a host or 
> service is going to be down for X minutes (or hours), but you don't 
> know exactly when that'll start. When you schedule flexible downtime, 
> Nagios will start the scheduled downtime sometime between the start 
> and end times you specified. The downtime will last for as long as the 
> duration you specified when you scheduled the downtime. This assumes 
> that the host or service for which you scheduled flexible downtime 
> either goes down (or becomes unreachable) or goes into a non-OK state 
> sometime between the start and end times you specified. The time at 
> which a host or service transitions to a problem state determines the 
> time at which Nagios actually starts the downtime. The downtime will 
> then last for the duration you specified, even if the host or service 
> recovers before the downtime expires. This is done for a very good 
> reason. As we all know, you can think you've got a problem fixed (and 
> restart a server) ten times before it actually works right. Smart, eh?
>
> Flexible means nagios expects the host to go down within the "window" 
> you have specified for the duration you specified.
>  
>  
>
> ------------------------------------------------------------------------
> *From:* Andrew Davis [mailto:nccomp at gmail.com]
> *Sent:* Tuesday, May 19, 2009 9:59 AM
> *To:* nagios-users at lists.sourceforge.net
> *Subject:* [Nagios-users] Downtime discrepancy
>
> Looking at my hosts that are scheduled for downtime, I noticed this:
>
> ns2    05-19-2009 10:55:04    adavis    Rebuilding with CentOS    
> 05-19-2009 10:54:43    05-19-2009 12:54:43    Flexible    0d 3h 0m 
> 0s    49    N/A     Delete/Cancel This Scheduled Downtime Entry
>
> How is it possible to have downtime scheduled from 10:54:43 to 
> 12:54:43 yet have a duration of 3 hours??? Something appears to be amiss.
>
> In fact, even though it was marked as flexible and with a duration of 
> 3 hours, 12:54:43 just passed and the system is no longer listed as 
> being under downtime, yet it should be as it was scheduled for 3 hours 
> of downtime.
> -- 
>
>
>   A. Davis
>   Email:     nccomp at gmail.com
>
>   "There is no limit to what a man can accomplish
>    if he doesn't care who gets the credit." - Ronald Reagan
>   
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