Connecting the "history" file dots...
Hi, All!
In poking around my data directory, I see a listing like this for the "cpu" test data for one of my hosts:
$ ls -rt /export/xymon/data/histlogs/pwmu002/cpu/
total 61
drwxr-xr-x 22 hobbit monitor 22 Dec 30 2010 ../
-rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_00:30:59_2012
-rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_01:51:10_2012
-rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_09:41:40_2012
-rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_12:52:12_2012
-rw-r--r-- 1 hobbit monitor 1.9K Jun 24 10:21 Sun_Jun_24_10:21:19_2012
-rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:19 Sun_Jun_24_11:19:10_2012
-rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:54 Sun_Jun_24_11:54:21_2012
-rw-r--r-- 1 hobbit monitor 1.9K Nov 5 12:41 Mon_Nov_5_12:40:58_2012
-rw-r--r-- 1 hobbit monitor 1.9K Nov 5 13:30 Mon_Nov_5_13:30:54_2012
-rw-r--r-- 1 hobbit monitor 1.9K Dec 2 13:37 Sun_Dec_2_13:37:24_2012
-rw-r--r-- 1 hobbit monitor 1.9K Dec 2 14:07 Sun_Dec_2_14:07:31_2012Each of these files is some sort of snapshot of the data displayed when you click on the "cpu" icon for the indicated host in Xymon.
Why then, is the most recent data file a couple weeks old but the data displayed for the "cpu" icon is current on the screen?
Thanks!
david
David Mills
Systems Administrator
Northrop Grumman
512-595-1238
david.mills at ngc.com
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On 12/12/2012 12:43 PM, Mills, David (IS) wrote:
Hi, All!
In poking around my data directory, I see a listing like this for the “cpu” test data for one of my hosts:
$ ls -rt /export/xymon/data/histlogs/pwmu002/cpu/ total 61 drwxr-xr-x 22 hobbit monitor 22 Dec 30 2010 ../ -rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_00:30:59_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_01:51:10_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_09:41:40_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_12:52:12_2012 -rw-r--r-- 1 hobbit monitor 1.9K Jun 24 10:21 Sun_Jun_24_10:21:19_2012 -rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:19 Sun_Jun_24_11:19:10_2012 -rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:54 Sun_Jun_24_11:54:21_2012 -rw-r--r-- 1 hobbit monitor 1.9K Nov 5 12:41 Mon_Nov_5_12:40:58_2012 -rw-r--r-- 1 hobbit monitor 1.9K Nov 5 13:30 Mon_Nov_5_13:30:54_2012 -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 13:37 Sun_Dec_2_13:37:24_2012 -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 14:07 Sun_Dec_2_14:07:31_2012
Each of these files is some sort of snapshot of the data displayed when you click on the “cpu” icon for the indicated host in Xymon.
Why then, is the most recent data file a couple weeks old but the data displayed for the “cpu” icon is current on the screen?
My immediate guess is because it has been green for a couple of weeks, and the "current" status is accessed a different way (not using history files).
- ---- _ _ _ _ ___ _ _ _ |Y#| | | |\/| | \ |\ | | |Ryan Novosielski - Sr. Systems Programmer |$&| |__| | | |__/ | \| _| |novosirj at umdnj.edu - 973/972.0922 (2-0922) \__/ Univ. of Med. and Dent.|IST/EI-Academic Svcs. - ADMC 450, Newark -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/
iEYEARECAAYFAlDIwqkACgkQmb+gadEcsb5PtgCghbkewQMx2gO2IxYEX2kRBilW cOgAoMqoHPwgU/e4f7vC2OM67teq/EV1 =IWqB -----END PGP SIGNATURE-----
Ah-ha! Thanks, Ryan. I checked your idea against the stamps of the last status changes for that host/test and found this:
$ tail /export/xymon/data/hist/pwmu002.cpu Mon Nov 5 13:30:54 2012 green 1352143854 2333190 Sun Dec 2 13:37:24 2012 yellow 1354477044 1807 # Turned yellow on "Sun Dec 2 13:37:24 2012" Sun Dec 2 14:07:31 2012 green 1354478851 # Turned green on "Sun Dec 2 14:07:31 2012"
The "13:37:24" and "14:07:31" stamp corresponds to the time stamps of the last two files in the ".../histlogs/pwmu002/cpu/" file:
ls -rt /export/xymon/data/histlogs/pwmu002/cpu/ <snip> -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 13:37 Sun_Dec_2_13:37:24_2012 -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 14:07 Sun_Dec_2_14:07:31_2012
-----Original Message----- From: Novosielski, Ryan [mailto:novosirj at umdnj.edu] Sent: Wednesday, December 12, 2012 11:45 AM To: Mills, David (IS) Cc: xymon at xymon.com Subject: EXT :Re: [Xymon] Connecting the "history" file dots...
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On 12/12/2012 12:43 PM, Mills, David (IS) wrote:
Hi, All!
In poking around my data directory, I see a listing like this for the "cpu" test data for one of my hosts:
$ ls -rt /export/xymon/data/histlogs/pwmu002/cpu/ total 61 drwxr-xr-x 22 hobbit monitor 22 Dec 30 2010 ../ -rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_00:30:59_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_01:51:10_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_09:41:40_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_12:52:12_2012 -rw-r--r-- 1 hobbit monitor 1.9K Jun 24 10:21 Sun_Jun_24_10:21:19_2012 -rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:19 Sun_Jun_24_11:19:10_2012 -rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:54 Sun_Jun_24_11:54:21_2012 -rw-r--r-- 1 hobbit monitor 1.9K Nov 5 12:41 Mon_Nov_5_12:40:58_2012 -rw-r--r-- 1 hobbit monitor 1.9K Nov 5 13:30 Mon_Nov_5_13:30:54_2012 -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 13:37 Sun_Dec_2_13:37:24_2012 -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 14:07 Sun_Dec_2_14:07:31_2012
Each of these files is some sort of snapshot of the data displayed when you click on the "cpu" icon for the indicated host in Xymon.
Why then, is the most recent data file a couple weeks old but the data displayed for the "cpu" icon is current on the screen?
My immediate guess is because it has been green for a couple of weeks, and the "current" status is accessed a different way (not using history files).
- ---- _ _ _ _ ___ _ _ _ |Y#| | | |\/| | \ |\ | | |Ryan Novosielski - Sr. Systems Programmer |$&| |__| | | |__/ | \| _| |novosirj at umdnj.edu - 973/972.0922 (2-0922) \__/ Univ. of Med. and Dent.|IST/EI-Academic Svcs. - ADMC 450, Newark -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/
iEYEARECAAYFAlDIwqkACgkQmb+gadEcsb5PtgCghbkewQMx2gO2IxYEX2kRBilW cOgAoMqoHPwgU/e4f7vC2OM67teq/EV1 =IWqB -----END PGP SIGNATURE-----
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On 12/12/2012 12:43 PM, Mills, David (IS) wrote:
Hi, All!
In poking around my data directory, I see a listing like this for the cpu test data for one of my hosts:
$ ls -rt /export/xymon/data/histlogs/pwmu002/cpu/ total 61 drwxr-xr-x 22 hobbit monitor 22 Dec 30 2010 ../ -rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_00:30:59_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 17 2012 Fri_Feb_17_01:51:10_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_09:41:40_2012 -rw-r--r-- 1 hobbit monitor 1.9K Feb 25 2012 Sat_Feb_25_12:52:12_2012 -rw-r--r-- 1 hobbit monitor 1.9K Jun 24 10:21 Sun_Jun_24_10:21:19_2012 -rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:19 Sun_Jun_24_11:19:10_2012 -rw-r--r-- 1 hobbit monitor 1.8K Jun 24 11:54 Sun_Jun_24_11:54:21_2012 -rw-r--r-- 1 hobbit monitor 1.9K Nov 5 12:41 Mon_Nov_5_12:40:58_2012 -rw-r--r-- 1 hobbit monitor 1.9K Nov 5 13:30 Mon_Nov_5_13:30:54_2012 -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 13:37 Sun_Dec_2_13:37:24_2012 -rw-r--r-- 1 hobbit monitor 1.9K Dec 2 14:07 Sun_Dec_2_14:07:31_2012
Each of these files is some sort of snapshot of the data displayed when you click on the cpu icon for the indicated host in Xymon.
Why then, is the most recent data file a couple weeks old but the data displayed for the cpu icon is current on the screen?
My immediate guess is because it has been green for a couple of weeks, and the "current" status is accessed a different way (not using history files).
"Current status" is kept in memory by xymond (subject to periodic checkpoint-file creation), but not natively stored anywhere.
When a status-change occurs, the "stachg" channel gets a message. In the normal, case, xymond_history listens on that channel and writes out the status log as appropriate. That means you'll get the first "green" status detail, but nothing more (until it changes, when you'll get the first status in the new color).
This was one of the improvements hobbit/xymon had over the old Big Brother, and significantly cut down on load on the server itself.
If you really want the most recent status saved to disk, enable the [storestatus] stanza in tasks.cfg. A better solution is usually simply to read it straight from xymond. e.g.:
xymon $XYMSRV "xymondlog host=pwmu002 test=cpu"
HTH,
-jc
participants (3)
-
cleaver＠terabithia.org
-
David.Mills＠ngc.com
-
novosirj＠umdnj.edu