[hobbit] iostat

[Phil Wild]

Hi Vernon,

You need to write your own backend to process the metrics from iostat that
you are sending from you clients. This involves manually building a new rrd
file from within your code for every new row that you receive. The hobbit
NCV can not do this for you in the current production release.

I am pretty sure this is covered in the man pages somewhere from memory or
in Henrik's graphing overview perhaps.
Once you have your backend script ready to receive and process the data and
build your rrd's, you modify some of the options for hobbitd in your
hobbitlaunch.cfg file to call the script every time a message comes in. From
memory, every message that enters hobbit gets passed to it so you need to
write it so that it just processes your data and is well enough written so
you can add further custom tests on as needed.

Sorry to sound so vague as has been a while since doing this. It is all
covered in the documentation though.

Cheers

Phil

2008/10/22 Everett, Vernon <Vernon.Everett at woodside.com.au>

> Hi Henrik
>
> Ok, let's say I was daft enough to give this a go.
> I want to generate graphs of my disks.
> On linux, I have sda and sdb
> On Solaris, c0t0d0, c0t1d0 and c0t2d0
> Not a problem.
> I generate output, configure my graphs, get the rrd files to auto-generate,
> and life is good.
> But now I add another disk!
>
> The only solution I can see is to have a separate rrd file per disk, the
> way you handle disk capacity.
> How do I tell the ncv module to put each disk into a different rrd file,
> instead of dumping it all into one, like it seems to like doing?
>
> Cheers
>     V
>
>
>
>
> -----Original Message-----
> From: Henrik Stoerner [mailto:henrik at hswn.dk]
> Sent: Tuesday, 21 October 2008 7:32 PM
> To: hobbit at hswn.dk
> Subject: Re: [hobbit] iostat
>
> In <A3D12FAD74FC8B46991703F40C182BAB013EDDDB at permls102.wde.woodside.com.au>
> "Everett, Vernon" <Vernon.Everett at woodside.com.au> writes:
>
> >Has anybody managed to get iostat data and graphs working for RedHat
> linux?
>
> >Looking to graph the basics for a system for physical disks.
> >r/s, w/s, avgrq-sz, await
> >All the rest is nice to have.
>
> >Anybody done this?
>
> Don't think so. The standard Hobbit client doesn't collect these data, and
> there's nothing on the server that knows how to parse it anyway.
>
> (I agree it would be nice to collect those stats - and mpstat as well).
>
>
> Regards,
> Henrik
>
>
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-- 
Tel: 0400 466 952
Fax: 0433 123 226
email: philwild AT gmail.com
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