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strange problem with RRD graphs

list Steve Holmes
Wed, 29 Sep 2010 12:53:46 -0400
Message-Id: <AANLkTincEodt1d0FvVyp1cXa4=user-d71d1fd3ccc9@xymon.invalid>

On Wed, Sep 29, 2010 at 12:40 PM, Alessandro Tinivelli <
user-f57e46de7c58@xymon.invalid> wrote:
 hi, i have installed the lastest stable release of xymon (previously
using hobbit) and added my old config files, then added some new host to be
monitored and all ok for a few days.


Suddenly today i've added a new host on bb-hosts, all was working fine
except that all the graps reported values of "nan".

Tried to remove, then delete with drop host command with no solution.


Then i tried to monitor another host -my own pc, just ping test-, added to
bb-hosts and got a bad suprise: same problem: graphs reporting "nan".


The strange fact is that all other "old" host has good graphs still reading
and showing correct data.


Please help :) thanks in advance.


Alessandro
For how long have you waited for the new graphs to behave? Sometimes it
takes a few cycles (1 cycle = 5 to 10 minutes). I've seen it take 20 or 30
minutes for the icons to show up on the web page. Even then there might not
be enough history for a graph to be meaningful (resulting in NaN) for a
couple of cycles.

Steve

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