[Xymon] Big RRD files causing problems

[Jeremy Laidman]

David

RRD files are fixed in size - they never grow. The only grooming that would
need to be repeated periodically, would be RRD filenames that are dynamic
in nature. These are for things such as mounted filesystems, which can
change over time (but usually don't), and for tracked logfile linecounts
where the logfilenames are populated by backticks. These types of dynamic
RRD files typically have commas in their names, such as
"lines.,var,log,messages#error.rrd" or "disk,home.rrd".

I can imagine a situation where an automounter magically mounts a USB stick
to some random mountpoint dirname, and Xymon dutifully starts collecting
data for it, but when the USB stick removed, the RRD file stays. Then the
next USB stick that's inserted gets a new random mountpoint dirname, and
hence a new RRD file. And so on.

I would be looking for new RRD files that appear out of nowhere, or ones
that have not been updated for a while, and try to find out where they come
from.

Cheers
Jeremy


On 12 September 2017 at 15:53, Mills,David (HHSC Contractor) <
David.Mills at hhsc.state.tx.us> wrote:

> Hi!
>
>
>
> Since upgrading to a new Xymon (  4.3.28-1.el6.terabithia
> <http://xymon.sourceforge.net/> / Linux from 4.3.3 on Solaris ) , my RRD
> file storage consumption is **much** greater than on the old server. It’s
> gotten so I have to manually groom the RRD files every 48 hours or they
> overflow the file system. Here are some stats:
>
>
>
> NOTE: Same set of hosts with same tests on both the old server (4.3.3 /
> Solaris) and the Terabithia distro for RHEL 6:
>
>
>
> Picking out the current biggest offender (the list varies but tracks
> pretty much along the lines of the largest hosts with the most data to
> send):
>
>
>
>                                      NEW Server        OLD Server
>
> Total space consumed for …/rrd       90GB               14GB
>
> # of files beneath …/rrd/pwow706/    1,916               25,815
>
> Avg file size (eyeballing it)        423K               38K
>
>
>
> Any ideas?
>
>
>
> Where can I read up on what RRD files Xymon puts into the RRD directory?
>
> Thx!
>
>
>
> ;-)
>
>
>
> David Mills
>
> ~~~~~~~~~~~~~~~~~~~~~~~~
>
> System Administrator
>
> Northrop Grumman
>
> Texas Health and Human Services Commission
>
>
>
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