:: Re: [DNG] Openrc
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Skribent: Didier Kryn
Dato:  
Til: dng
Emne: Re: [DNG] Openrc
Le 16/09/2016 13:15, KatolaZ a écrit :
> On Fri, Sep 16, 2016 at 12:24:45PM +0200, Didier Kryn wrote:
>
> [cut]
>
>>      Steve,

>>
>>      I like more and more this idea of separating the tasks:
>>       - pid1 (sysvinit or whatever) performs one-shot startups and basic
>> supervision (like for getty),
>>       - services needing a sophisticated supervisor use a supervisor which is
>> only a supervisor, not pid1,
>>       - services which depend on conditions use specialized tools to wait for
>> these conditions.

>>
> That looks like a great plan, but who will supervise the supervisors?
> :)
>
> I admit this might seem like a stupid comment, at least at first
> sight, but whenever you introduce a supervision system under unix you
> most probably end up deciding that the supervision should be delegated
> to pid1, since pid1 is the only process able to guarantee that
> supervision will be working, whatever happens.

     Nobody supervises pid1, OK? So why would the supervisor need to be 
supervised? It is supposed to be rock solid. Note that it can be barely 
relaunched by sysvinit in the same way as getty.


     Didier