Puppet users - Sep 2009 - What happens if puppet fails half way into processing a catalog?

If puppet fails half way into processing a catalog the system might be
in an unusable state right?

For example if it installs a package but not the one that follows it
or can''t set up the config file for whatever reason it doesn''t
know
how to "undo " the catalog does it?

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If you have dependencies set for a chain of events and it fails part
way, that is how the system is left. Everything that succeeded before
the failure with stay there and nothing in the dependence chain after
the failure will have been done. Every run of puppet after this, it will
keep trying to finish. But of course, will not succeed unless something
changes to correct the problem.

This does not mean the system is unusable. But at least one thing on the
system is not how you want it.

Steven 
> -----Original Message-----
> From: puppet-users@googlegroups.com 
> [mailto:puppet-users@googlegroups.com] On Behalf Of Tim Uckun
> Sent: Thursday, September 10, 2009 8:22 PM
> To: puppet-users@googlegroups.com
> Subject: [Puppet Users] What happens if puppet fails half way 
> into processing a catalog?
> 
> 
> If puppet fails half way into processing a catalog the system 
> might be in an unusable state right?
> 
> For example if it installs a package but not the one that 
> follows it or can''t set up the config file for whatever 
> reason it doesn''t know how to "undo " the catalog does
it?
> 
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I think you are alluding to transactions.  This feature does not exist  
currently in Puppet.

-L

--
Larry Ludwig
Reductive Labs


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I think you are alluding to transactions.  This feature does not exist  
currently in Puppet.

-L

--
Larry Ludwig
Reductive Labs


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On Sat, Sep 12, 2009 at 8:20 AM, Larry Ludwig <larry@reductivelabs.com>
wrote:
>
> I think you are alluding to transactions.  This feature does not exist
> currently in Puppet.
>

Sometimes I think system administration is like Make as in "In order
to create file X go through these steps".

Sometimes I think it''s like a Diff as in "this is what it should
look
like, this is what it does look like, apply this patch".

Sometimes I think it''s like migrations "The system started like
this,
I applied these steps to get to where I am now"

Maybe it''s a combination of all of the above. Maybe we can have
"up"
and "down" actions.

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