On 1/28/14 6:21 AM, Sergio Ballestrero wrote: > Hello Adrian, > > On 25 Jan 2014, at 21:34, Adrian Sevcenco <[email protected]> wrote: >> On 01/25/2014 09:37 PM, Sergio Ballestrero wrote: >>> Hello Adrian, if the host for which you send gmetrics is not a gmond >>> "client", you need to also spoof a "heartbeat" metric, else the >>> collector will think the host is down : >> yeah, i already banged my head on the wall for this... >> the things is that i dont know how fust this heartbeat is .. i imagine >> that either i should send gmetrics faster than this heartbeat or >> increase the time between heartbeats (at this moment it is not clear to >> me how this is related to dmax and tmax ... ) >> is dmax the time-width of the metric value and tmax the heartbeat? >> so the cronjob should have an size <= then tmax? > This is still quite confusing to me too and I have not investigated much. I > thought an interval less than dmax would keep the host alive, but with > dmax=600 and a period of 300s, I sometimes found the hosts "down" for > Ganglia. With 60s period, all seems ok, so where important I'm using 60s for > now. Never found time to dig in the actual code, so if you figure it out > better, I'd like to know it too.
The gmond "globals" configuration option "host_tmax" controls how long a host can go without a heartbeat before being seen as "down"; it's set to 20 by default, but the value in the config file gets multiplied by 4, so the default timeout is actually 80 seconds. http://manpages.ubuntu.com/manpages/raring/man5/gmond.conf.5.html#contenttoc2 - Adam ------------------------------------------------------------------------------ WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
