NAGIOS XI check Number of file threads

[junqian1992]

Hi,
how to monitor the Number of file threads in the nagios XI?
command : ps -eLf | awk '{sum += $6}END{print "Threads:\t" sum}' , how to configure on the nagios XI services?
Thank you.

[npolovenko]

Hello, @junqian1992.
You can just create a plugin based on this command. On your Nagios server navigate to /usr/local/nagios/libexec/ and create a new file called check_threads.sh. Paste the code into the file:

Code: Select all

ps -eLf | awk '{sum += $6}END{print "Threads:\t" sum}'

Save and exit.
Run the following command to give the permissions to your plugin:

Code: Select all

chmod +x check_threads.sh

After that you can create a command in XI. Go to the Configure/Core Configuration Manager, then commands, then "Add New":

screenshot-192.168.4.172-2017-12-20-10-12-09-830.png

Click on Save. Then Apply COnfiguration.

Now, go to the Core COnfiguration Manager again, click on services, and then Add New. In check_command field choose the command that you have just created. Fill out other required fileds. In manage Hosts, you may select localhost. Click on Save, then Apply configuration.

That should do it. Here's a reference just in case:
https://assets.nagios.com/downloads/nag ... ios-XI.pdf

[junqian1992]

Hi npolovenko,
Yes, this configuration i was do it before, but the result is showing the current nagios server file threads, whatever i change to the server which i want to monitor also showing the nagios server status, not the server i specific one.

[kyang]

Are you using this script to check another server? Is that correct?

What's in your script? Could you post it?

Did you script it to pass a -H argument?

If you haven't scripted it to connect to another server and execute, it's best to do so through an agent like (NRPE or NCPA) or by SSH. If you want to check another server for the number of file threads.

Let us know!

[junqian1992]

hi kyang,
script check_threads.sh as below:
#!/bin/bash
ps -eLf | awk '{sum += $6}END{print "Threads:\t" sum}'

Did you script it to pass a -H argument?
ans: i need to add -H argument in the script ? how to i add ? can provide me some example?

[mcapra]

If you want to run that script from the Nagios XI machine and have it check the file threads on a completely different machine, you'll need some sort of transport method. It would indicate a massive security problem on the destination machine if one could execute arbitrary commands on it with no additional configuration.

NRPE, NCPA, or simple SSH checks should work. Here's documentation on all of those things:

NRPE:
https://assets.nagios.com/downloads/nag ... _Agent.pdf
https://support.nagios.com/kb/article/n ... d-612.html

NCPA:
https://assets.nagios.com/downloads/nag ... ios-XI.pdf
https://www.nagios.org/ncpa/help.php#ap ... ng-plugins

check_by_ssh:
https://assets.nagios.com/downloads/nag ... ng_SSH.pdf

[kyang]

Thanks @mcapra!

junqian1992, please take a look at the suggestions for running your plugin on another remote machine.

[junqian1992]

Thanks mcapra and kyang.
I found out what i miss configuration.
it is working now, i added the command[check_threads]=/usr/local/nagios/libexec/check_threads.sh in the /usr/local/nagios/etc/nrpe/common.cfg it can work now. Thank you very much.

[kyang]

Sounds good!

Glad it's working, are we okay to close this thread?

Or did you have any more questions?

[junqian1992]

Hi Kyang,
You can close this ticket.
Thank you very much.