I had a similar problem too. As far as I know I don't know any script
that can do the correction automatically. The manual way to do it is the
dump/restore options of rrdtool
rrdtool dump load_one.rrd > load_one.xml
"edit load_one.xml"
mv load_one.rrd /tmp
rrdtool restore load_one.xml load_one.rrd
Notes: the man pages are: "man rdddump / man rrdrestore"
restore doesn't overwrite over an existing file.
make sure that owner/group of the .rrd file are the same
as well as the rwx permissions.
For edit, use your favorite editor :-) or XML editor if
you have one.
The output is in XML, so if you already programmed with an xml parser
library, it should be relativaly easy to crash the tool you are looking
for. I haven't done that kind of programing yet, so I don't have the tool.
Richard
John Saalwaechter wrote:
Occasionally a Linux compute node will get whacky
and its automounter will cause the system load to
gradually climb to about 1000! The node is mainly
functional, so it continues to report data to ganglia.
Sometimes this happens overnight or over the
weekend before being fixed with a reboot.
The problem is that this funky load of 1000 screws
up the ganglia cluster and grid data by drastically
altering the scaling. For example, the graph for
a 100-cpu cluster will show a load over 1000, with
the true data squished into obscurity at the bottom
of the scale.
What would be nice is some script that can operate
on the rrdtool databases and "zero out" a given node
for a specified time period. Plus it would have to
correct all the aggregated data, too. Does anyone
have a solution to this situation?
--
John Saalwaechter <[EMAIL PROTECTED]>
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--
Richard Lefebvre, Sys-admin, RQCHP, (514)343-6111 x5313 "Don't Panic"
Richard.Lefebvre(@AROBAS)rqchp.qc.ca -- THGTTG
