[Zope-dev] Is there an alternative to zdaemon?

Jens Vagelpohl jens at dataflake.org
Sat Dec 23 08:39:23 EST 2006

Hash: SHA1

On 23 Dec 2006, at 14:23, Jim Fulton wrote:
> zdaemon is an interesting case because it is soooooooo non-zope and
> (mostly) non-python specific.  I must say that it amazes me that there
> isn't an established alternative out there.

When people start talking about such functionalities I only ever see  
Daemontools mentioned. I never used it, but from your description it  
seems to have some shortcomings.

> One point in zdaemon's favor that I forgot about in my original  
> analysis
> is that it has a (also undocumented) subclassing API that allows  
> applications
> to add new commands.  We certainly leverage this to provide the  
> debug and
> run commands.
> supervisor2 looks very cool.  But it is also "ours" in some sense.   
> It also
> is much bigger than zdaemon.  It looks like like something that  
> people will
> often choose over zdaemon.  zdaemon is still attractive to me over  
> supervisor2
> because it is smaller, less ambitious and I already understand  
> it. :) And, of course,
> there are the good backward compatibility arguments that you make.

So with all that said, what's the use case for switching zdaemon out  
for something else? What other functionalities are *you* looking for?  
I don't think it ever caused anyone any headache apart from maybe  
working around different ways in which forking/daemonizing is handled  
on some platforms (OS X comes to mind).


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