Check_Time plugin and BST

[Carroll, Jim P [Contractor]]

Personally I'm not sure I'd bother with a check.  Instead, I'd specify an
odd number of NTP servers at the next stratum above me.  ntpdate on boot,
kick off ntpd, and forget about it.

If you ponder the problem, what are you checking against?  If the timeserver
you're checking against is considered to be more accurate than the one that
your NTP client is using, then why not specify that server?  Why try to be
smarter than the NTP protocol itself?  Sounds like an exercise at trying to
be too smart by half.

It just seems to me to be a non-problem, or at least not one that can be
easily resolved, short of joining the ISC and helping them work on the next
version of NTP.  ;)

If time is truly critical, there are various hardware solutions which can be
purchased which don't rely on an NTP server 'out there' on the net.

Food for thought.

jc

> -----Original Message-----
> From: Subhendu Ghosh [mailto:sghosh at sghosh.org]
> Sent: Thursday, October 10, 2002 10:56 PM
> To: 'nagios-users at lists.sourceforge.net'
> Subject: Re: [Nagios-users] Check_Time plugin and BST
> 
> 
> On Thu, 10 Oct 2002, Chris Losch wrote:
> 
> > I'm having a problem with the Check_Time plugin,
> >  
> > I am using the checkcommand to check our primary internal 
> time server, which
> > synchronises itself with an Internet Time source, server for skew,
> > using the following.
> > --snip--
> > command_line         $USER1$/check_time -H $HOSTADDRESS$ -w 
> 10 -c 30 -W 2 -C
> > 5
> > --end snip--
> >  
> > Ignoring the warn and critical levels I have set, the skew 
> is reported as ~
> > 3600 second time difference (1 hour)
> >  
> > The Redhat 7.3 Linux box I am running nagios on is 
> currently on BST (British
> > Summer Time = GMT +1 for our Internation users) at the 
> moment, and requires
> > that I put its time back an hour (to GMT) so that the time 
> falls within the
> > specified period to give an 'ok' response.
> >  
> > Presumably once we here go back to GMT this will then work 
> 'as it says on
> > the tin' but surely either I am missing something here? Is 
> everyone else
> > somehow fudging this to get an 'OK' response ? Is there 
> something I need to
> > do on the Linux box? 
> >  
> > I have the Questions, does anyone have the answers.... ?
> >  
> > (check_time is version 1.1.1.1)
> >  
> > 
> 
> 
> haven't touched the time protocol in ages - any chance you 
> are running 
> NTP?
> 
> -- 
> -sg
> 
> 
> 
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