nagiosgrapher v1.3 unreliable

[Andrew Cruse]

nagios-users-admin at lists.sourceforge.net wrote:
> While I can't comment on nagiosgrapher specifically, since I
> don't use it, I would suggest for RRDtool in general you take
> a look at tuning the RRD heartbeat and step values used in the
> rrdcreate command. 
> 
> The factor in Nagios that would cause RRD gaps is most likely
> service check latency.  Check latency is (in my experience)
> amplified by large numbers of host problems (since everything stops
> while host-checking) 
> 
> Using a heartbeat larger than the step value (2x is safe)
> will give you headroom in the event that your check latency
> becomes very large.  This should help prevent gaps from appearing in
> the RRD data. 

Also along the same lines, check what you have your Min and Max values
set to.  Values returned out of those bounds won't show up on your
graphs either.

Andrew



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