[collectd] help with exec plugin string format

Yves Mettier ymettier at free.fr
Fri Oct 17 08:18:15 CEST 2014


It seems to be not a good idea to mix 2 values in 1 rrd file as you are 
trying to do.
One day, you may want to stop mixing those values and this is not 

Have a look at http://oss.oetiker.ch/rrdtool/doc/rrdgraph.en.html if you 
are using rrdtool to graph your values.
Merge your values with 2 (or more) DEF lines. All the examples specify 
the same rrd file. Give a try with distinct rrd files. It should work.


Le 2014-10-17 01:59, GRAY Andrew G (SPARQ) a écrit :
> Dear all,
> I 'm trying to track usage of pools of virtual machines.
> So I have the gauge type working, but I really want two traces on the 
> one graph.
> The df type as defined in the types.db file seems to suit,
> Using the gauge type
> types.db
> gauge    value:GAUGE:0:1234567890
> Exec Plugin writes the following
> PUTVAL                $hostname/pool-poolname/gauge         N:$value
> Which generates a graph with a single blue trace.
> Now,
> I'm trying to get a dual trace graph with red and green, similar to
> the df plugin.
> Which I can't seem to find any docs on ....
> types.db
> df            user:GAUGE:0:1234567890, free:GAUGE:0:1234567890
> Writing ....
> PUTVAL                $hostname/pool-poolname/df-user
> N:$value1:$value2   .... Doesn't work
> PUTVAL                $hostname/pool-poolname/df
> N:user:$value1, N:free:$value2   .... Doesn't work
> Can anyone point me at some docs, or let me know the secret ingredient 
> ??
> Thanks for any help,
> Andrew Gray.
> Unix Administration.
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