Nagios 2 - passive host checks

[Christian Kleinfeld]

Hi guys

1 use the new Nagios 2.0b2 Version, because i want/need the feature of 
passive host-checking.
First let me explain our Environment. I have currently 160-200 hosts to 
check with Nagios in passive mode. I use NSCA-CVS Version 2.5 for this 
behavior.
Every 5 minutes sending a Host-Check to our Nagios and NSCA Server via 
cronjob, with send_nsca (echo `hostname`;0;OK | /opt/nagios/bin/send_nsca -H 
nagioshost.mydomain.ch -d “;” -c /opt/nagios/etc/send_nsca.cfg). This works 
fine.

On Server site i use the following Host-Template for our DMZ-Hosts (passive) 
:
define host {
        name                            generic-host-passive
        notifications_enabled	1
        event_handler_enabled	0
        flap_detection_enabled	1
        process_perf_data	0
        retain_status_information	1
        retain_nonstatus_information	1
        active_checks_enabled	1
        check_freshness	1
        freshness_threshold	420
        check_period	24x7
        check_command	check_dummy!2!"No Report, host maybe down"
        max_check_attempts	10
        notification_interval	120
        notification_period	24x7
        notification_options	d,u,r
        register	0
}

Host Configuration:
define host {
        use	generic-host-passive
        host_name	stydia
        alias	stydia: Nagios Development Server (Sun)
        address	10.25.1.65
        contact_groups	unix-admins
        notification_period	workhours
}

Nagios main-configuration (relevant Parts):
host_check_timeout=30
execute_host_checks=1
accept_passive_host_checks=1
check_host_freshness=1
host_freshness_check_interval=420


Every host with passive Checks uses template 'generic-host-passive'.

This works fine for some hosts, but not all and there is my possible 
misunderstanding.

See this Log Entry :
[Wed Mar  2 09:20:09 2005] EXTERNAL COMMAND: 
PROCESS_HOST_CHECK_RESULT;sapdb1;0;OK
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;1;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;2;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;3;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;4;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;5;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;6;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;7;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;8;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;SOFT;9;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST ALERT: sapdb1;DOWN;HARD;10;CRITICAL: No 
Report, host maybe down
[Wed Mar  2 09:20:10 2005] HOST NOTIFICATION: 
phmeie;sapdb1;DOWN;host-notify-by-devnull;CRITICAL: No Report, host maybe 
down

I have about 30 Hosts which goes Down (for Nagios) directly after receiving 
the passive Host-Check, what i'm doing wrong?

Thanks in advance

Chris

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