On Wed, Jun 19, 2013 at 10:14:56AM +0200, Marc Haber wrote: > On Wed, Jun 19, 2013 at 09:18:42AM +0300, Aki Tuomi wrote: > > Another method that has been used has been to setup a record like > > > > *.monitoring.example.com IN A 127.0.0.1 > > > > and then ask stuff like dig "`date +%s`.monitoring.example.com" > > Neat idea. Does this do a significantly better job than setting up > monitoring.example.com with a short TTL? > > Greetings > Marc >
The point is to ensure that cache is always bypassed, despite recursor settings. This way you don't have to setup separate monitorning recursor as you can always ask for a fresh name, and you know it'll get asked and not cached. Short TTL can be overriden by DNS server. Aki Tuomi
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