[rrd-users] Re: Peaks after reboots.

[Bernard van de Koppel]

Alex, 
 
Thanks, looks good. Will try it as soon as I get my fetch script changed from 
shell to perl. 
 
Bernard 
 
Quoting Alex van den Bogaerdt <alex at ergens.op.het.net>: 
 
> On Wed, Jan 14, 2004 at 03:14:55PM +0100, Bernard van de Koppel wrote: 
>  
> > After reboot of monitored divices (routers and switches) I often get an 
> peak  
> > value reported via RRD tool, unaware of the reboot of the device.  
> > Since i can easily test the sysuptime, I know when reboots have occured.  
> >   
> > Is there a way to store specific values into the rrd database, folowed by 
> the  
> > real (first counter) value, after a reboot of an device???  
>  
> Sure.  You know when the device was reboot.  You know the counter values 
> at that time.  You don't know what happened just before the reboot. 
>  
> So: 
>  
> at boottime-1: enter U (unknown) into the RRD 
> at boottime:   enter 0 (zero) into the RRD 
> at <now>:      process as usual. 
>  
> The boottime is known, or can be calculated from "now" - "uptime". 
>  
> HTH 
> Alex 
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Bernard van de Koppel 
(070-314)7968 

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