Very general question on nagios setup (host check vs. services)

[Cook, Garry]

http://www.nagios.org/faqs/viewfaq.php?faq_id=39&expand=true&showdesc=tr
ue

Garry W. Cook, CCNA
Network Infrastructure Manager
MACTEC, Inc. - http://www.mactec.com/
303.308.6228 (Office) - 303.881.5157 (Mobile) 

> -----Original Message-----
> From: Jay West [mailto:jwest at kwcorp.com] 
> Sent: Monday, March 10, 2003 1:29 PM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] Very general question on nagios setup 
> (host check vs. services)
> 
> 
> I'll forgo the specific platform and release information, as 
> I suspect this is a very general overiew type question. I 
> have nagios set up and it is working, but I feel there is 
> something I "just don't get". I have read the manual and faq, 
> they didn't seem to address this at least in terms that made 
> sense to me. I also tried searching the archives but my 
> question is so general I couldn't find anything specific. 
> I'll ask a few questions, but I have a feeling that a single 
> answer will allow me to figure out all of them.
> 
> First, when you set up a given host to be monitored, you tell 
> it what test to use.. check_host_alive I believe it is. This 
> seems to just call a ping test. By default I think, this 
> check is "passive", and from the status screen it would 
> appear that this test only happens once when nagios is 
> started up. Sooo if a host goes down, when will it catch it 
> if the test is only done when nagios starts?
> 
> >From some of the sample config files and my own reading, it seems not
> uncommon to define a host (and the check-host-alive), and 
> then define a single service for it called "ping". This seems 
> odd to me. If the host will already be pinged via 
> check-host-alive in the host definition, then why the need to 
> define a ping service for it?
> 
> In my case, there are a group of hosts where all I care about 
> is if the host is up or not. But if I just define the hosts 
> with check-host-alive, nagios complains bitterly that I don't 
> have any services defined.
> 
> So, I guess to sum up... if one defines a host and it gets 
> pinged via the host definition of check-host-alive, what is 
> the difference between that ping, and one you add to that 
> host as a service check? There seems to be something obvious 
> I'm missing conceptually.
> 
> Any help is most appreciated!
> 
> Jay West
> 
> 
> ---
> [This E-mail scanned for viruses by Declude Virus]
> 
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf 
> _______________________________________________
> Nagios-users mailing list
> Nagios-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/nagios-users
> ::: Please include Nagios version, plugin version (-v) and OS 
> when reporting any issue. 
> ::: Messages without supporting info will risk being sent to /dev/null
> 


-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Welcome to geek heaven.
http://thinkgeek.com/sf
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null