I am fairly new to Icinga. We are in the process setting up Icinga to monitor our network of about 25k hosts/services. So far we have about 11k hosts/service configured and Icinga is performing very well. We are excited about the results we have achieved so far and with how well Icinga has performed. Our sincere thanks go out to everyone who has contributed to the Icinga effort.
Unfortunately, I have run into an issue for which I need some help. I have serially connected hosts (i.e. not Ethernet capable), connected to a terminal server, which is connected to a switch, which is connected to a router. So the hierarchy is like this: Icinga -->router --> switch --> terminal server --> serial hosts When the router or the switch goes off line, everything downstream is set to "unreachable" (as expected), except for the serial devices. The status for the serial devices is reported passively to Icinga by a separate daemon process every 15 minutes. I have freshness checking set up so that if no input is received for 45 minutes then check_dummy is called and a warning is generated to declare the status as "stale". I would have expected that if a device was "unreachable" then freshness checking would be suspended but that does not appear to be the case. I am hoping that someone can explain to me what the expected behavior is in this case and how I might change things to correctly report the serial devices as "unreachable" when upstream devices are down. If the behavior I am seeing is the "expected" behavior in Icinga then maybe I could use a different plugin for the freshness check that could check the status of the parent device and return "unreachable" if the parent is either "down" or "unreachable". In that case, I'll need some help on how a plugin might determine the parent's status. Thanks for you help! Lyn Robertson Network Engineer/Cloud & Hosted Solutions 1000 NE Circle Blvd, Corvallis, OR 97330 [cid:image002.jpg@01CD2DD9.B07A7160]<http://www.polycom.com/>
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