On Jul 10, 2009, at 8:16 AM, David Rosenstrauch wrote:
Just wondering if anyone might have some pointers on a monitoring
puzzle
I've run into.
We have a couple of automated processes - one of them an automated FTP
upload, the other an automated log file gatherer - which wind up
causing
essentially the same result: new files regularly getting added to a
disk directory. I need to set up monitoring on this, since if we're
not
getting new files showing up then something has crashed and our system
won't be getting updated properly.
Not quite sure how to do this, though - i.e., which nagios plugin
would
help me get the job done.
I've used the check_file_age plugin successfully in a couple of spots.
E.g., to verify that a backup process has been run successfully I
perform a unix "touch" on a "last-backup-date" file at the end of the
backup, and then have the check_file_age plugin check the age of that
file. I don't think I can use that plugin & technique here,
however, since:
a) Each uploaded file has a different (timestamped) name, which I
don't
know ahead of time. So I have no way to tell the check_file_age
plugin
which file to monitor.
b) Unlike my backup process, which I wrote and was able to alter to
touch the last-backup-date file, I don't have control over the
external
processes creating/uploading these files.
I saw there were some rudimentary directory-monitoring plugins over at
the Monitoring Exchange site, but they seem like they can only do
things
like monitor the number of files in a directory vs. a threshold
minimum,
which is not quite what I want. (I don't really care about how many
files there are in the directory.)
Anyone have any suggestions on an existing plugin (either part of the
standard Nagios release, or available from Monitoring Exchange) that
can
help here? I'm not afraid to roll my own plugin if needed, but I'd
obviously prefer to save myself some work and use an existing one if
possible.
How about using check_file_age on the directory itself? I think the
timestamp of the directory is updated whenever a new file is added. Or
are there other processes going in in the directory, such as deletions
or modifications, that might make this value unreliable?
-----------------------------------------------
Israel Brewster
Computer Support Technician II
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7250 x293
-----------------------------------------------
Thanks,
DR
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TITLE:PC Support Tech II
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END:VCARD
------------------------------------------------------------------------------
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