Nagios Support Forum

Posted: **Wed Apr 10, 2019 9:03 pm**

I am using

Nagios Core Version 4.2.0
NSClient++ 0.4.3.143 2015-04-29 x64

When I launch NSclient in Test mode this command works fine.

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check_service "filter=name='OpenVPNService'" "empty-state=critical"

If I manually run this from nagios:

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./libexec/check_nrpe -H server.domain.com -c check_service -a "filter=name='OpenVPNService'" "empty-state=critical"

I get this back:

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OK: All 1 service(s) are ok.

When I use my service definition:

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define service {
        use                     generic-service
        host_name               server
        service_description     OpenVPN Tunnel Status
        check_command           check_nrpe!server.domain.com!check_service -a "filter=name'OpenVPNService'" "empty-state=critical"
}

I only get a status of UNKNOWN in the web UI

What am I missing?

Thanks,

Shawn

Posted: **Thu Apr 11, 2019 3:26 pm**

Hi @staylor8,

I don't have a Nagios Core instance open right now, but on my Nagios XI machine check_nrpe is defined as follows:

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define command {
    command_name    check_nrpe
    command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -t 30 -c $ARG1$ $ARG2$
}

As far as I remember this is the same as in Nagios Core, but you may want to verify.

If this is true, then your current service will be executing a command line like

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./libexec/check_nrpe -H server.domain.com -t 30 -c server.domain.com check_service -a "filter=name'OpenVPNService'" "empty-state=critical"

$HOSTADDRESS$ will be taken off of the config for 'server', so you should be able to change your service config to the following:

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define service {
        use                     generic-service
        host_name               server
        service_description     OpenVPN Tunnel Status
        check_command           check_nrpe!check_service -a "filter=name'OpenVPNService'" "empty-state=critical"
}

Let me know if that works for you!

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