[Nagiosplug-help] [ check_nrpe plugin error => (No output returned from plugin)] Help needed

[Lawrence, Lynne]

> -----Original Message-----
> From: nagiosplug-help-admin at lists.sourceforge.net
> [mailto:nagiosplug-help-admin at lists.sourceforge.net]On Behalf 
> Of Shobhan
> Challa
> Sent: Tuesday, December 21, 2004 7:50 AM
> To: nagiosplug-help at lists.sourceforge.net
> Subject: [Nagiosplug-help] [ check_nrpe plugin error => (No output
> returned from plugin)] Help needed
> 
> 
> Hi Nagios users,
> 
> I have a small problem, wasn't able to figure out where am I 
> going wrong.
> 
> I have Nagios daemon/plugins on 'Linux1' machine and the NRPE 
> daemon is 
> running on 'Linux2' box.
> 
> The /etc/nrpe.cfg on the  Linux2 is defined as:
> 
>        server_port=5666
>        allowed_hosts=192.168.100.168
>        nrpe_user=nagios
>        nrpe_group=nagios
>        dont_blame_nrpe=1
> 
>        # DEBUGGING OPTION
>        # This option determines whether or not debugging messages are
>    logged to the
>        # syslog facility.
>        # Values: 0=debugging off, 1=debugging on
>        debug=0
> 
>        # COMMAND TIMEOUT
>        # This specifies the maximum number of seconds that the NRPE
>    daemon will
>        # allow plugins to finish executing before killing them off.
>        command_timeout=60
>        command[check_disk]=/usr/local/nagios/libexec/check_disk -w
>    $ARG1$ -c $ARG2$ $ARG3$ $ARG4$
> 
> 
> 
> The services.cfg and checkcommands.cfg on "Linux1" are 
> defined as below:
> 
>         # Generic service definition template
> 
>    define service{
>            name                            generic-service ; 
> The 'name'
>    of this service template, referenced in other service definitions
>            active_checks_enabled           1       ; Active service
>    checks are enabled
>            passive_checks_enabled          1       ; Passive service
>    checks are enabled/accepted
>            parallelize_check               1       ; Active service
>    checks should be parallelized (disabling this can lead to major
>    performance problems)
>            obsess_over_service             1       ; We should obsess
>    over this service (if necessary)
>            check_freshness                 0       ; Default is to NOT
>    check service 'freshness'
>            notifications_enabled           1       ; Service
>    notifications are enabled
>            event_handler_enabled           1       ; Service event
>    handler is enabled
>            flap_detection_enabled          0       ; Flap detection is
>    enabled
>            process_perf_data               1       ; Process
>    performance data
>            retain_status_information       1       ; Retain status
>    information across program restarts
>            retain_nonstatus_information    1       ; Retain non-status
>    information across program restarts
> 
>            register                        0       ; DONT 
> REGISTER THIS
>    DEFINITION - ITS NOT A REAL SERVICE, JUST A TEMPLATE!
>            }
> 
>    ################################## Service definition for jagadeesh
>    system ####################################################
>    define service{
>            use                             generic-service         ;
>    Name of service template to use
>            host_name                         Linux2
>            service_description             check
>            check_period                     24x7
>            max_check_attempts          15
>            normal_check_interval       5
>            retry_check_interval          1
>            check_command                check_nrpe!check_disk

I don't see you passing anything but $ARG1$ here, though your command def
specifies 4 arguments.  This would end up running:

/usr/lib/nagios/plugins/check_nrpe -H 192.168.100.125 -c check_disk -a

Maybe if you change the check_command to the following it will work better:

check_nrpe!check_disk!80%!80%!/dev/hda9

Regards,

Lynne Lawrence
>            contact_groups                  linux-admins
>            notification_interval           120
>            notification_period             24x7
>            notification_options            c,r
>            }
> 
> The following is defined in checkcommands.cfg:
> 
>    define command{
>             command_name    check_nrpe
>             command_line    /usr/lib/nagios/plugins/check_nrpe -H    
> $HOSTADDRESS$ -c $ARG1$ -a $ARG2$ $ARG3$ $ARG4$
>            }
> 
> 
> Now the problem:
> --------------------
> When Nagios is started, I see the following message in 
> /var/log/messages:
> 
>                Dec 21 14:30:27 tinderbox nagios: SERVICE ALERT: 
> Linux2;check;UNKNOWN;SOFT;7;(No output returned from plugin)
> 
> I get correct output when I execute the commands from the 
> command line, 
> from Nagios host:
> 
> 1) ./check_nrpe -H 192.168.100.125 -c check_disk -a 70 70 /dev/hda7
> 2)  ./check_nrpe -H 192.168.100.125 (outputs: NRPE v2.0)
> 
> The check_nrpe plugin works fine If I define the following line 
> (hardcode) into checkcommands.cfg
> 
>        define command{
>            command_name    check_nrpe
>            command_line    /usr/lib/nagios/plugins/check_nrpe -H  
> 192.168.100.125 -c check_disk -a 80% 80% /dev/hda9
>        }
> 
> Can anyone tell me what mistake I'm doing. Why is it not 
> working without 
> any hardcoding.
> 
> 
> Thanks for your time in advance
> Shobhan
> 
> 
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