check_host_alive VS. ping service

[Edward Chase]

If there is no service check defined, it will do the host check?

This appears to be the case on the one host that I have removed the ping 
service check for.

Which would be the Nagios preferred method?  (ping service check and host 
check) or (just host check)?

Actually re-reading your response, it would seem that the ping service 
check and host check would be the preferred method.




At 02:42 PM 4/7/2003 -0400, Subhendu Ghosh wrote:
>Yes and no - the command used for the host-check is only invoked when the
>service check fails - so it must provide a method of determining if a host
>is up.  Ping indicates that at least the host's ip stack is working.
>
>If the host-check is only invoked when the service fails - that implies
>that you must have at least one service check for each host.   And you
>cannot depend on the host check if all the services are ok.
>
>For the simplest case of monitoring a host on the net, one tends to use
>ping.  So the check is identical for service and host.
>
>For the more complex cases - you can define services such as
>http/dns/smtp/etc for the devices and leave the ping check as the
>host-check
>
>confused yet :)
>
>--
>
>-sg

>On Mon, 7 Apr 2003, Edward Chase wrote:
>
> >
> > I'm currently working on the setup of Nagios for our network and am still
> > in the process of figuring out how it works.
> >
> > Right now I've got 175 hosts and 179 services being monitored.
> >
> > I've just noticed that a when a host is being monitored, it is done via
> > Ping.  Now I've setup Ping checks in services.cfg for all of the
> > hosts.  This is redundant, yes?
> >



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