See the "trimhistory" command. And there's nothing that says Xymon can't write after 5%, just the OS may have a certain amount of reserve space that is tunable, depending on the FS type and OS.
Bear in mind Xymon must be restarted after a trimhistory command otherwise the "X changes in the last 240 minutes" list will remain blank. Also make sure you run the command as the Xymon user, not root.
----- Original Message ----- From: Michael Beatty [mailto:Michael.Beatty at sherwin.com] Sent: Tuesday, December 04, 2012 12:11 PM To: xymon at xymon.com <xymon at xymon.com> Subject: [Xymon] Cleaning up history logs
What does Xymon check to determine if my history logs directory is full?
After several months of not paying any attention to Xymon, I dove back
in. I found that I was getting "Historical Status Log Not Avaialable".
Some browsing around showed that if the log directory has less than 5%
disk space available, the logs will not be written. I "df -i
/home/xymon/data/histlog" directory and it was (and still) is showing 4%
used. Unsure what to get rid of, I deleted everything I could find in
the data directory that related to old hosts that do not exist. After
doing so, log files were now available.
Obviously, there was a disk space problem, but where was it? This is just a demo system so I wasn't too worried about doing such a destructive deletion of everything, however, if this were a production system I'd want to be a lot more careful as to what it is that I delete. Would I just delete everything in the histlog directory that is
X days old?
-- Michael Beatty Sherwin-Williams IT Analyst/Developer michael.beatty at sherwin.com 216-515-7374
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