Thanks for clues in troubleshooting a problem with high DNS query rates from Observium.
I've been looking at Observium for network monitoring, and really like it so far, except that makes repeated DNS queries at a very high rate.
For example, an Observium box monitors an old Cisco 2651XM router in the same physical location. Running a capture on the DNS server, we see the Observium box made over 200 queries for the router's hostname in a 7-second interval. Also, the DNS server correctly responded to every one of these, usually within 20 ms.
What would cause so many DNS queries (and apparent non-caching of the responses)? This behavior is thrashing the logs on the DNS servers.
This is with Observium Community Edition 0.13.10.4586 running on Debian Wheezy.
Thanks again
dn