Nagios vs Juju monitoring

[Clint Byrum]

Excerpts from Gustavo Niemeyer's message of 2012-11-26 05:32:30 -0800:
> On Fri, Nov 23, 2012 at 5:38 PM, Clint Byrum <clint at ubuntu.com> wrote:
> > Indeed, the charm just refreshes the entire nagios config on depart or
> > broken. I actually never really understood that departed meant two things
> > (admin removal or box down). There absolutely must be a way to distinguish
> > them for nagios or any monitoring system to be able to do anything sane.
> 
> This is indeed super error prone and, as we discussed in the meetings
> pre-UDS, the behavior has been changed in the Go port to become more
> reliable. The relation-departed hook is *only* called when the user
> kill the relation/service/unit for real. A box-down will not trigger
> it anymore. That may come back in the future as a specific hook.
> 

Good to hear.

Is somebody maintaining a list of the functional differences for juju-core
so that upon release, users of juju 0.x will know what to expect?