Nagios Support Forum

Posted: **Fri Nov 17, 2017 10:46 am**

Hi all,
in our NagiosXI installation (v 5.4.11) we have a lot of check with a very long output (disk check), and some perf data are not drawed. Command are executeted trough NRPE

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$ /usr/local/nagios/libexec/check_nrpe -n -H REMOTE_SERVER
NRPE v2.12
$ /usr/local/nagios/libexec/check_nrpe -n -H REMOTE_SERVER -c REMOTE_COMMAND | wc
      1      89     909

So less than the 1024 limit of NRPE

Status information are cut off to 256 char (https://support.nagios.com/kb/article.php?id=478), but now is not a problem.

Performance data is correct show under "Service Status Detail --> Advanced --> Performance Data:", the gauge image is correctly displayed, but one of the graph is not drawed.

This is the output of commands found in this guide https://support.nagios.com/kb/article.php?id=9

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$ ls /usr/local/nagios/var/spool/perfdata/ | wc -l
0
$ ls /usr/local/nagios/var/spool/xidpe/ | wc -l
0

Raised LOG_LEVEL of process_perfdata.cfg, no error in perfdata.log
Changed the log_level of npcd.cfg, restarted service npcd, no error in npcd.log
Account nagios not locked.

Where is the problem?

It's possible to extract the performance data form database or the RRD file?

Thanks

Posted: **Fri Nov 17, 2017 12:01 pm**

Hello, @Francesco. Can you upload the plugin, the command definition, the screenshot of the performance data in service detail? Also, what data is not displaying in the graph? I will try to replicate this problem on my server and get back to you.

Posted: **Fri Nov 24, 2017 6:03 am**

Hi @npolovenko,

plugin: the remote server is AIX, I still have to upload the binary file?
command definition: command[check_aix_disk_all]=/opt/nagios/libexec/check_disk -w 20% -c 10% -A -x /proc -x /mksysb_nim -x /aha
attached pref data
screenshot_perfdata.png

Many thanks,

Posted: **Mon Nov 27, 2017 12:52 pm**

@Francesco, Your performance data output looks fine. Did you happen to add a new partition to this plugin recently? If you did, then I recommend deleting the RRD and XML files from /usr/local/nagios/share/perfdata/. That will force Nagios to recreate the graph and include all performance data.

Posted: **Thu Nov 30, 2017 4:49 am**

Thanks @npolovenko for your reply.

Two question:

how to check if the missing perf_data are present in the rrd?
in the XML I found that DS value is 14, with "Performance Data Tool" I don't see any data, with rrdtool fetch I get only columns from 1 to 13
Before delete the XML and the RRD files I have to backup data, and possible merge this backup with the new perf data, there is a simply guide?
I installed "Performance Data Tool" and also found:
https://support.nagios.com/kb/article/n ... a-166.html
https://support.nagios.com/kb/article/n ... g-149.html

Ciao

Posted: **Thu Nov 30, 2017 10:19 am**

Hi,
backup done with the following commands:

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cd /usr/local/nagios/share/perfdata
mkdir NODE.bck
cp -av  NODE/DISK_USAGE.rrd NODE/DISK_USAGE.xml NODE.bck/
rrdtool dump NODE/DISK_USAGE.rrd > NODE.bck/DISK_USAGE.rrd.xml
rrdtool fetch NODE/DISK_USAGE.rrd AVERAGE -s -2y -e now > NODE.bck/DISK_USAGE-AVERAGE.csv
rrdtool fetch NODE/DISK_USAGE.rrd MIN -s -2y -e now > NODE.bck/DISK_USAGE-MIN.csv
rrdtool fetch NODE/DISK_USAGE.rrd MAX -s -2y -e now > NODE.bck/DISK_USAGE-MAX.csv

The reset works, now we see the 14th filesystem, but...

... "Performance Data Tool" give me the following error during the merge operations:

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Processed 1 item
Merging: /usr/local/nagios/share/perfdata/prdsbldbs03.bck/DISK_USAGE.rrd ---> /usr/local/nagios/share/perfdata/prdsbldbs03/DISK_USAGE.rrd
Result:
Traceback (most recent call last):
File "scripts/rrdmerge", line 262, in 
sys.exit(main())
File "scripts/rrdmerge", line 253, in main
merged_et = merge_rrd_xml(old_et, new_et)
File "scripts/rrdmerge", line 167, in merge_rrd_xml
"RRDs have different number of DSes."
AssertionError: RRDs have different number of DSes.

There is a way to merge single "DS"?

Thanks,

Posted: **Thu Nov 30, 2017 12:50 pm**

@Francesco, Check out this tutorial on how to add multiple data sources into one RRD file, the link to the script is inside:
https://support.nagios.com/kb/article/n ... g-149.html

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