[chef] Re: Recipes doing status checkins?

[Brad Knowles < >]

On Aug 29, 2013, at 7:23 PM, Larry Wright 
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 wrote:

> I've done this with a data bag. Just write to a 'progress' data bag at each 
> interval. As long as the data bag is only used for this purpose, there 
> shouldn't be any concurrency issues.

Since data bags can only be written to by one process at a time (and I don't 
think there is any locking used), you end up having to use separate data bags 
for each node, and then that starts to be a real pain.

> Node.save would work, but there's a race condition with nodes where if you 
> modify it during the chef run, you might overwrite changes that occurred 
> externally (like someone running knife node run_list add).

Hmm.  That's interesting.  I hadn't considered that issue.  I'll have to give 
this one some more thought.

> Hope this helps.

Yup!  Thanks!

--
Brad Knowles 
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LinkedIn Profile: <http://tinyurl.com/y8kpxu>