Packet loss reported by check_ping?

[Andy Shellam (Mailing Lists)]

Andreas,
>> Also, along those lines...  I recently moved from the 1.2 Nagios to the 
>> more recent 2.4-2.5 Nagios.  Nagios 1.X seemed to only trigger a host 
>> check if a service check failed.  Nagios 2.X seems to ALWAYS run host 
>> checks in addition to service checks.  The fact that host checks are 
>> currently not run in parallel seems like this can really limit performance.
>>
>> Why did that behavior change?
>>     
>
> It didn't. Or rather, it wasn't supposed to. I haven't seen anything of 
> the kind in any of our ~160 customers installations, so I'm fairly 
> certain this doesn't happen for all setups. What does your nagios.log 
> report on the ~15 lines prepending the host-check entry?
>   


[1165968000] LOG ROTATION: DAILY
[1165968000] LOG VERSION: 2.0
[1165968000] CURRENT HOST STATE: Cairns;UP;HARD;1;PING OK - Packet loss
= 0%, RTA = 0.93 ms
[1165968000] CURRENT HOST STATE: FH-Gateway;UP;HARD;1;PING OK - Packet
loss = 0%, RTA = 0.19 ms
[1165968000] CURRENT HOST STATE: Perth;UP;HARD;1;PING OK - Packet loss =
0%, RTA = 0.08 ms
[1165968000] CURRENT HOST STATE: SC-Gateway;UP;HARD;1;PING OK - Packet
loss = 0%, RTA = 5.89 ms
[1165968000] CURRENT HOST STATE: Sydney-1;UP;HARD;1;PING OK - Packet
loss = 0%, RTA = 6.62 ms
[1165968000] CURRENT HOST STATE: Sydney-2;UP;HARD;1;PING OK - Packet
loss = 9%, RTA = 9.10 ms
[1165968000] CURRENT SERVICE STATE: Cairns;- OVERALL SERVER
AVAILABILITY;OK;HARD;1;PING OK - Packet loss = 0%, RTA = 1.15 ms
---- the above line is repeated for every host/service combination ----
[1165968024] Warning: The results of host 'Cairns' are stale by 45
seconds (threshold=15 seconds).  I'm forcing an immediate check of the host.
---- the above line is repeated for every host ----

The "stale by xx seconds" varies between 40 and 70 seconds.

However in Nagios' front-end, scheduled hosts checks are apparently
disabled:

Last Check Type: 	ACTIVE
Last Check Time: 	13-12-2006 15:19:18
Status Data Age: 	0d 0h 0m 59s
Next Scheduled Active Check:   	N/A






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