Sébastien

I think this one is pretty simple - ready to kick yourself? Try putting "=" (without quotes) instead of the blank after --extra-script and --extra-tests!

Once that's done though you may hit another problem, over which I've been tearing my hair out for the last week. I got the graphs connected up OK, but values were only being written into it very intermittently. I've finally tracking it down to a bug in the external script handler do_external.c (at least in the version we're running - snapshot as of 9th Sept). This does not apply to 4.2.0 - but we had troubles getting that to work with BBWin (we're monitoring Windows boxes).

The problem is that recent versions of hobbit caches writes to RRD, but the external script is handled by a forked process, which only operates on a copy of the cache controller, and not that of the main process. I'll submit my fix (albeit crude) when I've worked out haw to do so (I'm really new to this open source stuff)!,

Graham Nayler

Sébastien Munch wrote:

Hello

I'm trying to create an extra script for hobbit_rrd. I've followed tutorials found on the net, especially http://www.trantor.org/theshire/doku.php/tutorials:customgraph

I'm getting the information in the status page. Data is correctly sent to the hobbit server.

Everything seems to be configured correctly, but I'm not getting any rrd data. In the configurations, I've double-checked paths, execution rights, etc.

To simplify the tests, I've changed my extra-script so that it writes everything in a temporary file.

The script isn't started : it doesn't write in this temporary file.

In the rrd-status log, I don't see anything about executing the extra script.

hobbitlaunch.cfg :

[rrdstatus] ENVFILE /usr/lib/hobbit/server/etc/hobbitserver.cfg NEEDS hobbitd CMD hobbitd_channel --channel=status --log=BBSERVERLOGS/rrd-status.log hobbitd_rrd --rrddir=$BBVAR/rrd --extra-script /usr/lib/hobbit/server/ext/rrd_openvz.sh --extra-tests openvz --debug [snip]

Graham Nayler