Re: [hobbit] Problems with custom RRD graphs

[Andy France <Andy (at) zespri.com>]

Henrik Stoerner <henrik (at) hswn.dk> wrote on 17/02/2005 19:55:57:

> On Thu, Feb 17, 2005 at 01:24:55PM +1300, Andy France wrote:

> > I've written my --extra-script (based on the sample in the
hobbitd_larrd
> > man page) and added this as well my columns for the --extra-tests in
> > hobbitlaunch.cfg under the larrdstatus command.

> Brave man - you're  the first to try out this mechanism for real:-)


Wheeeeeeeee!  Bring on the pain!  ;-)


> > My script is getting executed OK.  I've added some debug messages which
get
> > appended to a log file and most things are running as expected.
However,
> > I'm getting no actual data, no rrd files and no graphs :-(
> >
> > It seems the the $FNAME parameter is not giving me what it shoud, and
this
> > is causing my tests to echo the DS line, the rrd file name, but an
empty
> > data string.


Quite the opposite it turns out.  I added some extra debug lines to cat $3
- lo and behold, there was my expected output in all its glory.  My bad.

Once I *fixed my grep* I started getting data and rrd files ( I was
grepping for text at the start of the line, but the report included a
leading space).

Of course, my original "cp $FNAME /tmp/$FNAME.$TESTNAME.$$" in debug wasn't
working because I didn't basename $FNAME first.  Duh.


My remaining problem is that after colecting a few data points, I still
have no graphs on the test pages or the trends page.  I'm off to bed now
and will re-check tomorrow morning.  But if you know of anything else I may
have missed please let me know!  Should bb-hostsvc.sh pick it up
automagically?


> Some shell's do have slightly different syntax than what the example
> script in the man-page shows.  You could try just echo'ing the input
> parameters to some file and see what they are. Like

> echo "Input 1: $1" > /tmp/params.txt
> echo "Input 2: $2" >>/tmp/params.txt
> echo "Input 3: $3" >>/tmp/params.txt
>
> at the top of your script (before they get put into the $FNAME etc).

> > I'm running 4.0-RC2 on Solaris 9 x86.

> Something in the back of my head says: Could you try putting the
> input params inside curly brackets ? Instead of

> HOSTNAME="$1"
> TESTNAME="$2"
> FNAME="$3"
>
> try
> HOSTNAME="${1}"
> TESTNAME="${2}"
> FNAME="${3}"
>
> Henrik

This wasn't an issue of course - plain old $1, $2 and $3 are fine.

Thanks for the help (and of course the awesome tool).

On to Oracle data... and maybe some c modules to replace my script.

Cheers,
Andy.


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