Using passive host checks and freshness

[Kevin Keane]

I found the problem. Host freshness checks were turned off in nagios.cfg.

Kevin Keane wrote:
> I am using Nagios 3.0.6. In my setup, most checks are passive. I also am 
> using passive host checks. I can't get freshness checking to work right 
> for host checks, though it works fine for services. I'd appreciate some 
> help with that!
>
> I tried configuring the host checks the same way as service checks:
>
> active_checks_enabled 0
> passive_checks_enabled 1
> check_freshness         1
> freshness_threshold     900
> check_command           check_dummy!2!"Server is down!"
>
> But freshness checking apparently is never taking place.
>
> When I set active_checks_enabled to 1, Nagios will change the status to 
> UP when a check result arrives for the host, and then immediately, 
> within ten seconds or less, change it back to DOWN. Oddly enough, it 
> does not use the status text return from check_dummy ("Server is down!") 
> but rather (null).
>
>
>
>
> The relevant host and template definitions are attached below, as well 
> as an excerpt from the nagios.log file for the same server.
>
> define host {
>         host_name                       xxxx.xxxx.xxxx
>         hostgroups                      servers
>         alias                           XXXXX
>         address                         192.168.2.197
>         use                             windows-server
>         contact_groups                  mainoffice
> }
>
> define host{
>         name                    windows-server  ; The name of this host 
> template
>         use                     generic-host    ; Inherit default values 
> from the generic-host template
>         check_period            24x7            ; By default, Windows 
> servers are monitored round the clock
>         check_interval          5               ; Actively check the 
> server every 5 minutes
>         retry_interval          1               ; Schedule host check 
> retries at 1 minute intervals
>         max_check_attempts      10              ; Check each server 10 
> times (max)
>         # check_command         check-host-alive        ; Default 
> command to check if servers are "alive"
>         passive_checks_enabled  1
>         check_freshness         1
>         freshness_threshold     900
>         check_command           check_dummy!2!"Server is down!"
>         # normal_check_interval   5
>         # retry_check_interval    2
>         notification_period     24x7            ; Send notification out 
> at any time - day or night
>         notification_interval   30              ; Resend notifications 
> every 30 minutes
>         notification_options    d,r             ; Only send 
> notifications for specific host states
>         contact_groups          admins          ; Notifications get sent 
> to the admins by default
>         hostgroups              windows-servers ; Host groups that 
> Windows servers should be a member of
>         register                0               ; DONT REGISTER THIS - 
> ITS JUST A TEMPLATE
>         }
>
> The Nagios.log file contains:
>
> [1245555922] PASSIVE HOST CHECK: xxxx.xxxx.xxxx;0;sometext
> [1245555922] HOST ALERT: xxxx.xxxx.xxxx;UP;HARD;1;sometext
> [1245555922] HOST NOTIFICATION: 
> xxx at xxx.com;xxxx.xxxx.xxxx;UP;notify-host-by-email;sometext
> [1245555930] HOST NOTIFICATION: 
> kkeane;xxxx.xxxx.xxxx;UP;notify-host-by-email;sometext
> [1245555931] HOST ALERT: xxxx.xxxx.xxxx;DOWN;SOFT;1;(null)
>
>
>
>   


-- 
Kevin Keane
Owner
The NetTech
Find the Uncommon: Expert Solutions for a Network You Never Have to Think About

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