Re: OT: Munin (was Re: Determining server load from client)

On 3/21/07, Erik Jones <erik(at)myemma(dot)com> wrote:
>
>
> On Mar 21, 2007, at 4:13 PM, Tobias Brox wrote:
>
> [Erik Jones - Wed at 09:31:48AM -0500]
>
> I use cacti (http://cacti.net) which does the same thing that munin
> does but in php instead. Here's what I use to db stats to it (again,
> php):
>
>
> I haven't tried cacti, but our sysadm has done a little bit of research
> and concluded "cacti is better". Maybe some day we'll move over.
>
> Munin is generating all the graphs statically every fifth minute, while
> cacti generates them on demand as far as I've understood. The munin
> approach is pretty bloat, since one usually would watch the graphs much
> more seldom than what they are generated (at least, we do). That's not
> really an argument since CPU is cheap nowadays - but a real argument is
> that the munin approach is less flexible. One would like to adjust the
> graph (like, min/max values for both axis) while watching quite some
> times.
>
>
> Well, by "default", Cacti polls all of the data sources you've set up
> every five minutes as well as that's how the docs instruct you to set up the
> cron job for the poller. However, with a little understanding of how the
> rrdtool rras work, you could definitely poll more often and simply edit the
> existing rras and datasources to expect that or create new ones. And, yes,
> the graph customization is pretty cool although for the most part the just
> map what's available from the rrdtool graph functionality. If you do decide
> to set up Cacti I suggest you go straight to the faq section of the manual
> and read the part about going from a simple script to a graph. The main
> manual is almost entirely centered on the built-in networking (e.g. snmp)
> data sources and, as such, doesn't do much for explaining how to set up
> other data sources.
>

Has anyone had experience setting up something similar with Nagios? We
monitor servers using nagios and not having to install additional software
(cacti/munin) for postgres resource usage monitoring would be great.

Thanks in advance!