On Sun, 3 Oct 2010 06:41:14 +1000, Amos wrote: >That's the way UDP works.
Thanks so far. But could you be so kind to explain it a little further? I'm not that familiar with UDP and don't see why the clients need to open a listening UDP port to send data to the server. Thanks, Enrico >On 02/10/2010 11:09 PM, "Enrico Tröger" <[email protected]> >wrote: > >Hi Guys, > >collectd is great! Thanks for this software! > >I'm using collectd on various servers to collect >all the data and send it via the "network" plugin >to a central instance where the data is stored. > >The central instance obviously opens an UDP port to >receive the collected data from the "clients". >But for some reason, even the clients open an UDP >port. It seems the port number is chosen randomly >as it changes on every restart: > >[13:03:25] r...@hefi (0): ~# netstat -tuplen | grep collectd >udp 0 0 0.0.0.0:33549 0.0.0.0:* 0 762935590 32399/collectd >[13:03:36] r...@hefi (0): ~# /etc/init.d/collectd restart >Restarting statistics collection and monitoring daemon: collectd. >[13:03:41] r...@hefi (0): ~# netstat -tuplen | grep collectd >udp 0 0 0.0.0.0:52165 0.0.0.0:* 0 762945183 3310/collectd > >I'm wondering if this intended and/or others >can confirm this behaviour. > >For testing, I disabled the "network" plugin >and then collectd won't open the port. So, >it seems strictly related to the "network" >plugin. > >Here is my config of one of the clients: > ><Plugin network> > <Server "<ip-des-masters>" "<port>"> > SecurityLevel "Encrypt" > Username "collectd" > Password "<passwort>" > </Server> ></Plugin> > > >collectd version: 4.10.1-1+squeeze1~bpo50+1 (Debian Stable / Backports) > > >Any ideas? > > >Regards, >Enrico
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