[evla-sw-discuss] Deranged name lookups
James Robnett
jrobnett at aoc.nrao.edu
Wed May 24 18:10:31 EDT 2006
We're seeing about 11,000 DNS lookups per hour coming from one
of Qwests name servers for evla-mib address/host pairs. Since
these are on a private network the best guess is somebody is looking
at the data from home and converting hostnames to IP's (the inverse
won't work since 10.x.y.z doesn't map to the NRAO from the outside
worlds view).
Any idea why somebody (probably in Albuquerque) needs to
do addr/host pair matching ?
If I had to guess I'd say somebody in Albuquerque has some big
chunk of EVLA archive on a laptop and are trying to do hostname
to ip conversion.
We really need to either get comfortable working with IP addresses
or load the IP addr/hostname pairs into software. Handling 10's of
thousands of DNS lookups/hour * more antennas * more employees
isn't going to scale real well .... well it would I guess but it just
seems like a waste.
James
ps: If nothing else it's forcing our logs to rotate by size several
times a day.
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