More info about performance data

Icinga 2
1

Hi, I’m trying to figure out more about performance data.
I notice on icingaweb2 the service ‘disk’ is able to monitor all disks and show the performance data of all of them with the cake like graph.

I tried to run the check_disk plugin on 2 devices to check it’s output and here’s an example:

/usr/lib/nagios/plugins/check_disk --units GB -w 5 -c 10 --path /opt/zimbra --path /
DISK OK - free space: /opt/zimbra 59 GB (60% inode=98%); / 14 GB (78% inode=90%);| /opt/zimbra=38GB;93;88;0;98 /=3GB;14;9;0;19

I see performance data has a csv like format (label=value;value;value;value;value) and on icingaweb2 I see the results as:
Label Value Max Warning Critical

So, 5 values passed by the plugin, 4 values shown by icingaweb2.
Looks like the ‘0’ is not considered or has a meaning I don’t know.
Checking documentation I found 8 value types:
label value counter unit crit warn min max

If I create my own plugin, how shall performance data be printed out?
I’m confused by the 8 values type reported in the documentation and the 5 printed by check_disk plugin.

Thank you.

2

As Icinga2 also respects the nagios plugin guidelines as they are the standard/best practice in the monitoring world, I like to consult those guidelines:
https://nagios-plugins.org/doc/guidelines.html#PLUGOUTPUT

1 Like
3

To add, Icinga Web 2 just parses the output performance data on its own and presents only the most used values. Not everything in those performance data values is really needed all the time.

4

Just for quick consulting:
'label'=value[UOM];[warn];[crit];[min];[max]
The 0 return by the check_disk plugin it’s the minimum value of a range.
Now I get it’s meaning.
Very useful all the details found in the link.
Thank you both.