Understanding the Nagios Eventlog

[Darren.Lichty at alltel.com]

I see this same sort of thing happen for a test passive check I have setup.
When I first bring Nagios on-line, and submit a passive check result (via some test scripts I built), it will show events in the following order:
	Acknowledgement of the external command (PROCESS_SERVICE_CHECK_RESULT)
	Host Alert (Host assumed to be up)
	Service Alert

If I am not mistaken, I believe this is what Nagios is doing internally:
	1) receive results of service check (passive in my case)
	2) since the service is up, mark the host as up
	3) mark the service as up

Now I may be completely off base here, but that is what I think is happening.  I have not dived that deep into the source code to know this algorithm too intimately.

-Darren

-----Original Message-----
From: nagios-users-admin at lists.sourceforge.net
[mailto:nagios-users-admin at lists.sourceforge.net]On Behalf Of
WDougallJR at nwdtc.com
Sent: Thursday, August 19, 2004 1:55 PM
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] Understanding the Nagios Eventlog
Sensitivity: Confidential


I've read the doc's and understand that Host's don't get checked until a
service fails but the info I find in my event log appears to tell a
different story.  Am I misunderstanding something/reading the log wrong?  Or
is do I have a config error?  Or is this what is supposed to be happening?
 
 
[2004-08-19 03:36:04] SERVICE ALERT: hostA;Ping Unix Hosts;OK;HARD;1;PING OK
- Packet loss = 0%, RTA = 6.50 ms
[2004-08-19 03:36:04] HOST ALERT: hostA;UP;HARD;1;PING OK - Packet loss =
0%, RTA = 0.60 ms
[2004-08-19 03:27:05] SERVICE ALERT: hostA;Ping Unix
Hosts;CRITICAL;HARD;1;PING CRITICAL - Packet loss = 100%
[2004-08-19 03:27:05] HOST ALERT: hostA;DOWN;HARD;5;CRITICAL - Plugin timed
out after 10 seconds
[2004-08-19 03:26:55] HOST ALERT: hostA;DOWN;SOFT;4;CRITICAL - Plugin timed
out after 10 seconds
[2004-08-19 03:26:44] HOST ALERT: hostA;DOWN;SOFT;3;CRITICAL - Plugin timed
out after 10 seconds
[2004-08-19 03:26:34] HOST ALERT: hostA;DOWN;SOFT;2;CRITICAL - Plugin timed
out after 10 seconds
[2004-08-19 03:26:24] HOST ALERT: hostA;DOWN;SOFT;1;CRITICAL - Plugin timed
out after 10 seconds

 
 
William Dougall Jr
Xerox Managed Services
Systems Support
wdougalljr at nwdtc.com
503-844-2143
800-621-9697
 
"It doesn't do any good to steal the ball and then dribble it off your
foot!" (author unknown)
 


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_______________________________________________
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::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null