Re: RH tools and conf changes

["Chester R. Hosey" <Chester Hosey gianteagle com>]

On Thu, 2005-07-21 at 22:10 +0800, John Summerfied wrote:
> Chester R. Hosey wrote:
> 
> >
> >>Install mon
> > 
> > 
> > I'm actually looking at Nagios now. I'm not familiar with mon, but I've
> > heard it said that it doesn't do things like service dependency
> > tracking. This would mean that (assuming it implements notification
> > groups) the entire IS department would get pages if a link were to be
> > severed somewhere. Nagios lets you set it up so that if the network
> > fails, only the network guys get paged instead of the network guys, the
> > DBAs whose Oracle instances are across the network, the UNIX guys, the
> > Windows guys, the developers, etc.
> 
> Here's a group of servers called servergroup:
> hostgroup servergroup mail printers backup
> 
> Here's another group:
> hostgroup wwwservers debian.office.lan terad.net
> 
> Here's how I watch the www servers:
> watch wwwservers
>      service ping
>          interval 15m
>          monitor fping.monitor
>          period wd {Sun-Sat}
> #           alert qpage.alert mis-pagers
>              alert mail.alert summer office lan
>              alertevery 2h
>      service http
>          interval 4m
>          monitor http.monitor
>          period wd {Sun-Sat}
> #           alert qpage.alert mis-pagers
>              alert mail.alert summer office lan
>              alertevery 2h
> 
> There are lots of tests, and one ca write one's own. As you can see, eac 
> test can result in different actions and be run at different intervals.
> 
> Can also monitor disk space.
> 
> Conceivably, I could write a script to change the gateway to he internet 
> if, for example, one goes down.
> 

Can you set up dependency trees? I do like the appearance of mon's
configuration format over that used by Nagios; however if you're sending
notifications to summer office lan if the network link between the mon
server and the www servers drops, that's definitely a problem in a
larger environment.

Chet