SV: Disable check-host-alive for certain hosts
Bergström Sebastian
Sebastian.Bergstroem at kunskapsskolan.se
Tue Apr 5 17:36:40 CEST 2005
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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