Server Role States

[Simo Sorce]

On Thu, 2014-06-12 at 11:40 -0400, Stephen Gallagher wrote:
> On 06/12/2014 11:32 AM, Simo Sorce wrote:
> > On Thu, 2014-06-12 at 16:11 +0200, Miloslav Trmač wrote:
> >> 2014-06-12 16:03 GMT+02:00 Stephen Gallagher
> >> <sgallagh at redhat.com>:
> >> 
> >>> On 06/11/2014 10:16 PM, Simo Sorce wrote:
> >>>> Btw, I am not sure I understand why a crash would be resolved
> >>>> by a deploy, there is quite a difference between an error in
> >>>> deploying and a runtime error a while after successfully
> >>>> deployed.
> >>>> 
> >>> 
> >>> That's a case where resetError() is the more likely answer (or
> >>> a package update fixing the crash bug). I can add a separate
> >>> Crashed state if you really want it, but it seems superfluous
> >>> to me.
> >>> 
> >> 
> >> I’d rather not; by my yardstick of “would the user treat the
> >> system differently in the two states?”, there is no difference
> >> between {crashed,failed with an error message} {while starting
> >> {for the first time, for the $Nth time}, after successful start
> >> and running fo some time}: the next thing to do is to review any
> >> logs applicable, and the ways to remedy are to either change the
> >> configuration (resetError()), to update to a fixed version
> >> (vaguely ~deploy), or to repair a truly broken system (e.g. 
> >> lost/corrupted files) by manual action we aren‘t making easier.
> > 
> > It seem you consider the system is always unavailable after a crash
> > but that is not the case with monitored daemons that are
> > automatically restarted. You certainly may want to be notified but
> > if the service is running (once the daemon has been automatically
> > restarted) then there is no error state to really fix (of course
> > you want to eventually update packages, but it may take quite a
> > while before updates are available).
> 
> 
> This state is for when a service has crashed and isn't coming back up.
> If it's auto-restarted, then it's not getting to this state.

uhmm ok so more than crash() it is a does_not_start() case ?

Simo.

-- 
Simo Sorce * Red Hat, Inc * New York