script.sh with always green dashboard even in error

[ggreg]

Hello everyone,
(OS: Debian 11)

I have a problem with the dashboard, one of my personalized sensors remains always green, even in critical condition.

I will describe to you what I did:

Usually I use the default sensors or downloads from the official website. But this time, I launched a script.sh to find out if the bind9 DNS service is active or inactive.

Here it is and it works :
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Code: Select all

#!/bin/bash
if systemctl is-active --quiet bind9; then
     echo "OK - The Bind9 service is active."
     exit 0 # Exit code 0 for OK
else
     echo "CRITICAL - The Bind9 service is down."
     exit 2 # Exit code 2 for CRITICAL
fi

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I put it on my client, I put the execution rights and declare it in /etc/nagios => nrpe.cfg

I tested it on my nagios (server side), in /usr/local/nagios/libexec: with "NRPE" =>

Code: Select all

./check_nrpe -H xxx.xxx.xxx.xxx -c check_status_bind9

I get feedback that says "OK - The Bind9 service is active", so my script is working (I have resolved the problem of access rights to my file).

I declared my sensor in the "commands.cfg" file in /usr/local/nagios/etc/objects.

Here is the line from this file:

Code: Select all

## DNS service
define command{

         command_name check_status_dns
         command_line $USER1$/check_nrpe -H $HOSTADDRESS$ check_status_bind9
}

I obviously checked nagios with:

Code: Select all

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

No errors, so I restarted my nagios for everything to take effect.

But, when I voluntarily turn off my DNS, in order to create "critical" on the dashboard, nothing happens, it always remains green.
However, the output of my script when everything is fine is: 0 and when it is an error it is: 2

In theory nagios, takes the 2 which for him means "error".

I don't know if I need to add options somewhere, I tried a lot of other configs but without success. I also thought about putting " -w $ARG1$ -c $ARG2$ " in " define command " without success.

If you have any ideas, I'm interested.
Thank you.

[ggreg]

I found the error.
It is located on the client, /etc/nagios => nrpe.cfg

command[check_status_dns]=sudo /usr/lib/nagios/plugins/check_status_dns.sh -a

It's just the "-a " that was missing...

Hope this helps others

[Dever2000]

Did you solve the problem?

[ggreg]

Did you solve the problem?

Yes, It's just the "-a " at => command[check_status_dns]=sudo /usr/lib/nagios/plugins/check_status_dns.sh -a