Nagios Support Forum

Hi lmiltchev,
that's the result...

/usr/local/nagios/libexec/check_ncpa.py -H 10.1.3.4 -P 5693 -t mytoken -M 'disk/logical/C:|/used_percent' -w 80 -c 90
The node (C:|) requested does not exist. You may be trying to access the '|' node.

/usr/local/nagios/libexec/check_ncpa.py -H 10.1.3.4 -P 5693 -t mytoken -M 'disk/logical/C:|/used_percent' -w 80 -c 90 -vvv
Connecting to: https://10.1.3.4:5693/api/disk/logical/ ... 90&check=1
File returned contained:
{
"returncode": 3,
"stdout": "The node (C:|) requested does not exist. You may be trying to access the '|' node."
}
The node (C:|) requested does not exist. You may be trying to access the '|' node.


That is what I see in the NCPA web console:

disk/logical/|sys/used_percent
Current 0.00 % Min 0.00 % Max 0.00 % Average 0.00 %
disk/logical/|proc/used_percent
Current 0.00 % Min 0.00 % Max 0.00 % Average 0.00 %
disk/logical/|boot/used_percent
Current 19.80 % Min 19.80 % Max 19.80 % Average 19.80 %
disk/logical/|dev|pts/used_percent
Current 0.00 % Min 0.00 % Max 0.00 % Average 0.00 %
disk/logical/|dev|shm/used_percent
Current 0.00 % Min 0.00 % Max 0.00 % Average 0.00 %
disk/logical/|/used_percent
Current 28.20 % Min 28.20 % Max 28.20 % Average 28.20 %
disk/logical/|proc|sys|fs|binfmt_misc/used_percent

This looks like a Linux system... Do you actually have a "C:" drive on 10.1.3.4?

Do you actually have a "C:" drive on 10.1.3.4?
The FTP server I would like to monitor has a CentOS 6.9 System on board, partitions are shown in the previews post, sorry but I don't understand your question.

I was referring to this:

Now I have another question about check command syntax.
As you can see in the attached screen capture probably there's something wrong in the definition service I wrote in Nagios Config file:

define service{
use generic-service
host_name ftp-server
service_description Disk Usage
check_command check_ncpa!-t 'mytoken' -P 5693 -M disk/logical/C:| -w 80 -c 90
}

My goal is to monitor all disk partitions and send an alert message when 80% of disk usage is reached or a critical alert when 90% of disk usage is reached.

Thank you for your patient!

What is the IP of the ftp-server? If this is a CentOS 6.9 system, you shouldn't have a "C:" drive there... and yes, I saw the partitions in your previous post, that's why I am puzzled about the "C:" drive...

To monitor these partitions, you could run something like this:

Thank you lmiltchev!!!
Of course partition C does not exixt, it's CentOS, but looking in the help section of NCPA web site every reference to the partitions is described by letter C, so I thought it was a feature of the plugin, but obviously it is not.
Now works fine and all partition can be monitored.

I attach an exemple of service definition that works

define service{
use generic-service
host_name ftp-server
service_description Sys Usage
check_command check_ncpa!-t 'mytoken' -P 5693 -M 'disk/logical/|sys/used_percent' -w 80 -c 90
}

Thank you so much!

I am glad I could help!