[hobbit] bug in hobbitlaunch pause loop ?

Hubbard, Greg L greg.hubbard at eds.com
Mon Jun 11 19:44:41 CEST 2007


On UNIX systems, the clock will not change during "spring forward" or
"fall back" DST operations.  All that changes are the rules for
calculating the timezone offset from the system clock for display
purposes.

GLH

-----Original Message-----
From: Jeffcoat, Al [mailto:Al.Jeffcoat at orhs.org] 
Sent: Monday, June 11, 2007 12:18 PM
To: hobbit at hswn.dk
Subject: RE: [hobbit] bug in hobbitlaunch pause loop ?

What happens when the time gets set back in the fall as part of daylight
savings?


Al 

-----Original Message-----
From: Henrik Stoerner [mailto:henrik at hswn.dk]
Sent: Monday, June 11, 2007 11:19 AM
To: hobbit at hswn.dk
Subject: Re: [hobbit] bug in hobbitlaunch pause loop ?

On Mon, Jun 11, 2007 at 03:59:59PM +0200, Charles Goyard wrote:
> When setting the system clock way back, the hobbit client "stalls" and

> reports get purple. Maybe hobbitlaunch should verify the clock did not

> step back.

You'll have worse problems than simply hobbitlaunch stalling.

A lot of the Hobbit data collection is time-based; clocks jumping back
causes all sorts of "interesting" things to happen with your RRD graphs
and the history logs. Not to mention the alert-repeat mechanism.

Sure, I can fix the hobbitlaunch stalling (already have) and some other
problems that will happen in parts of Hobbit when this occurs, but I
cannot fix the data that has been stored with a wrong timestamp.

So having your server time-sync'ed with NTP to a known good clock is
more or less a prerequisite for running Hobbit.


Regards,
Henrik


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