'parents' and network latency

[Tedman Eng]

We monitor globally dispersed systems, and some of the more extreme
locations have really bad network connections.
We implemented Nagios it this way, which may be helpful to try in your
situation.

I increased the critical threshold on the check_ping (lets say Switch01 is
in Siberia and recieves bad pings all the time, so I make it use
check_ping!1500,50%,2500,75%)  Then, use Switch01's check_ping service as
the template name for each of the  children's service check commands.
They'll all inherit the tuned ping thresholds.


"Rainer" <sourceforge at powered.net> wrote in message
news:6.0.0.8.2.20030718183434.022b47d8 at pop1.mail.com...
> Hello,
>
> Let's assume I have a "deep" network topology (with many parent hosts
above
> the Nagios box), such as:
>
> Nagios Server => Switch 01 => Switch 02 => Firewall => Packet Shaper =>
> Router => ...
>
> When the 'parents' directive is properly setup and "Switch 01" goes down,
> check-host-alive tells me it went down, and supresses notifications for
all
> the other hosts.
> Now, if "Switch 01" if heavely loaded and my fping service finds out it
has
> a 500ms rta, all other hosts above it (switch 02, firewall etc) will have
> response times equal or bigger than 500ms.
> My question is, in this scenario, how can I supress critical messages from
> the fping service regarding all other hosts which are slow because of
> switch 01 ? (having fping figure out that, since the host above it is
slow,
> it doesn't need to notify me about all other hosts)
> Perhaps this could be implemented in a future Nagios version (an option in
> nagios.cfg such as "apply_parents_directive_to_network_latency")
>
> PS: This could be accomplished with service dependency (maybe?), but it
> wouldn't be practical since I would have to create several dependency
> checks for each parent host, which would make it really hard to maintain.
>
> Regards,
> Rainer Alves
> Unisys Brazil
>
>
>
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