Nagios check_service.sh error redis-server unrecognized service

nagios

I have an issue withe Nagios Monitoring. I have following configuration:

in commands.cfg

define command{
        command_name    check_service.sh
        command_line    /usr/lib64/nagios/plugins/check_service.sh -o $ARG1$ -t $ARG2$ 
}

in Service definition

define service {
        use                             generic-service
        host_name                       ARGPLUS_REDIS_SLV
        service_description             Redis Service
        check_command                   check_service.sh!linux!"service redis-server status"
        notifications_enabled           0
        }

I get following error:

Current Status: UNKNOWN (for 0d 0h 0m 17s)
Status Information: Unknown status: redis-server: unrecognized service
Is there a typo in the command or service configuration?: redis-server: unrecognized service

But with the same configuration just changing the process name gives me correct output

define service {
        use                             generic-service
        host_name                       ARGPLUS_REDIS_SLV
        service_description             Redis Service
        check_command                   check_service.sh!linux!"service nrpe status"
        notifications_enabled           0
        }

Output
Service State Information
Current Status: OK (for 0d 0h 24m 20s)
Status Information: nrpe (pid 16124) is running…

I think the minus sign in the process name redis-server is making the issue.

Best Answer

I think the redis service can also run with name redis. So it could be.

define service {
        use                             generic-service
        host_name                       ARGPLUS_REDIS_SLV
        service_description             Redis Service
        check_command                   check_service.sh!linux!"service redis status"
        notifications_enabled           0
        }

To confirm run a manual check

 $ ./check_service.sh -o linux -t "service redis status"

Related Solutions

Nagios (Last Notification: N/A (notification 0))

I don't see it mentioned in your question or any of the answers but have you checked the nagios.cfg file for the enable_notifications setting? Is it set to 0 or 1?

Also is this only happening on a given service notification or is it affecting all notifications? If it's all I would suspect that enable_notifications is set to 0 in the nagios.cfg file. If so try changing it to 1 and restarting Nagios.

Nagios Check Service Frequency Based on Status – Configuration Guide

Assuming that the interval_length directive is set to 60 by the default:

$ grep interval_length /usr/local/nagios/etc/nagios.cfg 
# This value works of the interval_length you specify later.  If you leave
# actual seconds rather than a multiple of the interval_length variable.
interval_length=60

For the special services, you need to define a different template for it in /usr/local/nagios/etc/objects/templates.cfg:

define service{
        name                            special-service    
        ...
        max_check_attempts              3           
        normal_check_interval           20         
        retry_check_interval            3           
        notification_interval           60   
        ...   
        }

Pay attention to the:

normal_check_interval: this service is check every 20 minutes under normal condition
retry_check_interval: the number of minutes to wait before scheduling a re-check when service has changed to non-OK state. Notice that if the service has been retried max_attempts time without a change in its status, it will revert to being scheduled at check_interval rate.

and use this template for your service:

define service{
    use                     special-service
    host_name               xx
    service_description     yy
    check_command           zz
    contact_groups          admins
    }

You may also need to define a service escalation to change the notification_interval based on the service state, something like this:

define serviceescalation{
    host_name               xx
    service_description     yy
    last_notification       0
    notification_interval   10
    escalation_options      [w,u,c]
    contact_groups          admins
    }

It means that this service escalation is used when service is in WARNING, UNKNOWN, or CRITICAL state. And you now have a new notification intervals: 10 minutes.

Best Answer

Related Solutions

Nagios (Last Notification: N/A (notification 0))

Nagios Check Service Frequency Based on Status – Configuration Guide

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