Missing "HOST UP" notifications after host recovery but Nagios seeing host as UP

[Mauch Gerold IT10]

> Hi all,
> 
> I'm using nagios to monitor ~300 hosts and ~3000 services.
> When I host goes down, it often recovers without a nagios
> notification. Nagios sees the host as up, but does send a recovery
> notification. Notification history doesn't even show a "HOST UP"
> notification.
> Sometimes, I see a HOST UP. I'm working with a 24x7 interval, so it's
> not an interval issue.
> 
> myhost.mydomain.local	N/A	 HOST DOWN	 31-05-2007 07:30:57
> admins	 host-notify
> <http://nagios/nagios/cgi-bin/config.cgi?type=commands#host-notify>
> FPING CRITICAL - Myhost.mydomain.local (loss=100% )	 
> myhost.mydomain.local	N/A	 HOST DOWN	 31-05-2007 06:13:01
> admins	 host-notify
> <http://nagios/nagios/cgi-bin/config.cgi?type=commands#host-notify>
> FPING CRITICAL - Myhost.mydomain.local (loss=100% )	 
> myhost.mydomain.local	N/A	 HOST DOWN	 31-05-2007 06:12:09
> admins	 host-notify
> <http://nagios/nagios/cgi-bin/config.cgi?type=commands#host-notify>
> FPING CRITICAL - Myhost.mydomain.local (loss=100% )	
> 
> As I don't see a HOST UP notification in nagios history I believe that
> it is a bug or configuration issue.
> HOST DOWN-Notifications are sent, so I don't believe it to be an error
> calling the host-notify command.
> 
> Pls can anybody help?
> 
> define host {
>         name                    generic-host    ; The name of this
> host template
>         notifications_enabled           1       ; Host notifications
> are enabled
>         event_handler_enabled           0       ; Host event handler
> is enabled
>         flap_detection_enabled          0       ; Flap detection is
> enabled
>         failure_prediction_enabled      0       ; Failure prediction
> is enabled
>         process_perf_data               0       ; Process performance
> data
>         retain_status_information       1       ; Retain status
> information across program restarts
>         retain_nonstatus_information    1       ; Retain non-status
> information across program restarts
>         max_check_attempts              4
>         notification_interval           0
>         notification_period             24x7
>         notification_options            d,r
>         check_command                   check-host-alive
>         register                        0       ; DONT REGISTER THIS
> DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
> }
> 
> 
> define host {
>         use     generic-host            ; Name of host template to use
>         host_name   myhost.mydomain.local   
>         alias   myhost
>         address myhost.mydomain.local
>         contact_groups  admins
> }
> 
> define contactgroup {
>         contactgroup_name       admins
>         alias   Nagios Administrators
>         members admin1
> }
> 
> define contact {
>         contact_name    admin1
>         alias   admin1
>         service_notification_period     24x7
>         host_notification_period        24x7
>         service_notification_options    w,c,r
>         host_notification_options       d,r
>         service_notification_commands   service-notify
>         host_notification_commands      host-notify
>         email admin at mydomain.local
>         pager 0123456789
> }
> 
> Cheers,
>  Gerold
> 
> 
> 



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