[collectd] Force StepSize on rrdcached plugin

[Bruno Prémont]

On Thu, 22 Mar 2012 12:55:50 Stian Øvrevåge <sovrevage at gmail.com> wrote:
> Works beautifully! Thanks!
> 
> If I have one future suggestion tho it would be some more granularity
> on how to create the RRD files based on the plugin parameters, such as
> snmp interval.
> 
> For example, I do not need the same length of history for all types of
> data, also, min/max/avg does not make sense for all my measurements.
> But the most important is that I initially want to collect data from
> switches at say 60 seconds and CPEs at 5 minutes. I do however want to
> be able to collect at smaller intervals while troubleshooting, and
> hence the RRDs need to be created with smaller steps, but still
> different steps between switch and CPE...

That will be harder to realize as this information is not passed with
the collected data.

The nearest would be a list of rrdtool/rrdcached settings that could be
matched against plugins/types passing, eventually considering host and
instance information.

Probably doing something like:
<plugin rrdcached>
  <rrdopts>
    Pattern "regexp matching on host/plugin-inst/type-inst"
    RRD-settings
  </rrdopts>
  <rrdopts>
    ...
  </rrdopts>
  ...
</plugin>

Regards,
Bruno


> BRgds,
> Stian Øvrevåge
> 
> >> On Thu, Mar 22, 2012 at 11:24 AM, Bruno Prémont
> >> <bonbons at linux-vserver.org> wrote:
> >> > Hi,
> >> >
> >> > On Thu, 22 Mar 2012 11:16:29 Stian Øvrevåge <sovrevage at gmail.com> wrote:
> >> >> In the documentation there are some options for the rrdtool plugin
> >> >> with regards to StepSize and some RRA-specifics. I am dependent on
> >> >> tuning these values. However, I'm using the rrdcached plugin, not
> >> >> rrdtool. How to proceed?
> >> >
> >> > Try attached patch, it makes the same options of rrdtool plugin
> >> > configurable for rrdcached plugin as well.
> >> >
> >> > Regards,
> >> > Bruno
> >> >
> >> >
> >> >> Thanks in advance
> >> >>
> >> >> Regards,
> >> >> Stian Øvrevåge
> >> >