Check Operating System Version

[rlinux57]

Getting problem while run command on nagios server:
/usr/lib64/nagios/plugins/check_nrpe -H HOSTNAME -t 30 -c Check_OS_Version -a show-all 'detail-syntax=${kernel_name} Version ${kernel_release}

Here's is the output message:
CHECK_NRPE: Received 0 bytes from daemon. Check the remote server logs for error messages.

[Box293]

What version of NSClient++ are you using and what OS is it running on?

Can you please post the nsc.ini or nsclient.ini file here.

[rlinux57]

I want to check linux OS version.

[Box293]

usr/lib64/nagios/plugins/check_nrpe -H HOSTNAME -t 30 -c Check_OS_Version -a show-all 'detail-syntax=${kernel_name} Version ${kernel_release}

You are missing the closing ' at the end of this command

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usr/lib64/nagios/plugins/check_nrpe -H HOSTNAME -t 30 -c Check_OS_Version -a show-all 'detail-syntax=${kernel_name} Version ${kernel_release}'

I've tested this with Linux NSClient++ 0.4.3.77.

Have you enabled insecure settings (this is new in 0.4.3)?

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nscp settings --path /settings/NRPE/server --key insecure --set true

Also, if you want to debug the problem I think you need to:

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nscp settings --path /settings/log --key level --set debug

Restart the NSClient++ service on the linux server

AND add debug to the end of your command

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usr/lib64/nagios/plugins/check_nrpe -H HOSTNAME -t 30 -c Check_OS_Version -a show-all 'detail-syntax=${kernel_name} Version ${kernel_release}' debug

What does the NSClient++ log show now?

Also, have you opened the firewall port on your Linux server?

[rlinux57]

I was missing closing ' on this post only.
I'm using nrpe. I've nagios monitoring system on linux server.
Is it any changes required in nrpe.cfg at host end ?

[slansing]

Yeah I think there was a bit of confusion as to what you were using initially. Can you attach your plugin here as well please? Or provide a link?

[rlinux57]

Check this link: http://sites.box293.com/nagios/guides/c ... ing-system

I want to implement for linux servers added in my NMS.
I want to do this through nrpe not nsc.

[Box293]

Hey thats my page

The Check_OS_Version check is ONLY available on the Linux version of NSClient++ 0.4.3 onwards. It is built into NSClient++ for Linux.

Here's some install instructions:
http://sites.box293.com/nagios/guides/n ... unix-linux

If you want to do it using NRPE you'll need to find a script that does it.

[rlinux57]

There's no such script for nrpe i've already searched it in google.

[slansing]

Why not just make a basic script for this? All you need to do is:

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cat /etc/redhat-release

For Centos/RHEL systems, you can switch it around for what ever distro you are checking. You would of course need to build in exit code handling and some simple standard output following:

https://nagios-plugins.org/doc/guidelines.html

This specific check looks at the kernel version, you could base it off of that:

http://exchange.nagios.org/directory/Pl ... on/details