SV: Disable check-host-alive for certain hosts

[Bergström Sebastian]

I have the check_command defined to check_ssh. As I understand, normal behaviour for Nagios is that if a Service does not respond - it tries to Ping it instead. When the host does not reply on SSH calls, Nagios tries to ping the host instead which results in a host down alert.

How do I change this behaviour?

Below are the service settings for my SSH checks.


Any input is deeply appreciated.


Best regards,
Sebastian Bergstroem

----

checkcommands.cfg

define command{
       command_name    check_ssh
       command_line    $USER1$/check_ssh $HOSTADDRESS$
       }
----

services.cfg

define service{
        name                            generic-service ; The 'name' of this se$
        active_checks_enabled           1       ; Active service checks are ena$
        passive_checks_enabled          1       ; Passive service checks are en$
        parallelize_check               1       ; Active service checks should $
        obsess_over_service             1       ; We should obsess over this se$
        check_freshness                 0       ; Default is to NOT check servi$
        notifications_enabled           1       ; Service notifications are ena$
        event_handler_enabled           1       ; Service event handler is enab$
        flap_detection_enabled          1       ; Flap detection is enabled
        process_perf_data               1       ; Process performance data
        retain_status_information       1       ; Retain status information acr$
        retain_nonstatus_information    1       ; Retain non-status information$
        register                        0       ; DONT REGISTER THIS DEFINITION$
        }

# NSClient service definition template
define service{
        use                             generic-service
        name                            nsclient-service
        check_period                    24x7
        max_check_attempts              3
        normal_check_interval           10
        retry_check_interval            1
        contact_groups                  Operation
        notification_interval           30
        notification_period             24x7
        notification_options            w,u,c,r
        register                        0      ; DO NOT REGISTER, TEMPLATE!
        }

define service{
        use                             nsclient-service
        host_name                       fw01,fw02,fw03
        service_description             SSH
        check_command                   check_ssh
        }
----

-----Ursprungligt meddelande-----
Från: Mike Simkins [mailto:mike.simkins at gmail.com]
Skickat: den 5 april 2005 10:27
Till: Bergström Sebastian
Kopia: nagios-users at lists.sourceforge.net
Ämne: Re: [Nagios-users] Disable check-host-alive for certain hosts


Change the check_command for the host to use an SSH check.

You can use any check command to see if a host is alive, not just
check-host-alive


On Apr 4, 2005 12:25 PM, Bergström Sebastian
<Sebastian.Bergstroem at kunskapsskolan.se> wrote:
> We use Nagios v.1.2 and monitors some remote Firewalls (among others). The Firewalls does not reply on ICMP (which makes check-host-alive useless). Our current check implementation is to ensure that the SSH daemon runs on the Firewalls. When the SSH daemon does not respond for whatever reason, check-host-alive kicks in and that results in a Host down alert (since the Firewalls does not respond on ICMP).
> 
> How can I force Nagios to only rely on the SSH service check?
> 
> Any thoughts or ideas are deeply appreciated.
> 
> Thanks in advance!
> 
> Best regards,
> Sebastian Bergstroem
> 
> ----------------------------------------------
> Sebastian Bergstroem
> Technical coordinator
> Kunskapsskolan i Sverige AB
> sebastian.bergstroem at kunskapsskolan.se
> -----------------------------------------------
> 
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