On Mon, 23 Jan 2006, Ben Hartshorne wrote:
<snip>
When I go into the page for a single host and click on the 'gmetrics'
link, I find that all of my metrics have a record of being recieved
within the last two minutes (my time period). And yet, their graphs
show up empty.
Any thoughts? What logs should I be looking at?
</snip>
If I am not mistaken, the values shown on the 'gmetrics' page are just the
current values extracted from the XML that is retrieved from the gmetad process.
The graphs however come from rrdtool and are generated based on the data stored
in the round-robin database files.
Is it possible these rrd files are missing some information? I have never seen
it personally, but I suppose a case could arise where gmetad has accurate
current values, but for some reason they are not being put into the rrd files.
You can always use the rrdtool command by hand to dump out the rrd files for
those metrics which appear to have gaps. Then check to see if the data is
actually there.
Also, you could use rrdtool to generate the exact same graph that is shown on
the web page for one of these metrice and dump it straight into a file. Then
you could compare that with the image seen on the web page (to check for the
unlikely event that the generated image if fine, but the web server is messing
something up).
These are just kind of guesses, but maybe one of them will reveal some info.
-- Rick
--------------------------
Rick Mohr
Systems Developer
Ohio Supercomputer Center
