Puppet users - Mar 2009 - watching a file remotely / trigger a command?

Hi,

Been racking my brain and I don''t think there is a way to do it so I
come to the experts. I have a puppet server and a client. Pretty
simple - so here is the problem. I have a job that runs on the CLIENT
and creates a file. I want puppet to notice when this file changes on
the CLIENT and then somehow have the SERVER get the file?

I am thinking this is backwards of how puppet runs, but maybe if I
have a template file of the same name. When puppet sees that it
changes, it replaces the NEW file and then stores the old one back on
the server and NOT the client as a backup?

Your thoughts? Does it make sense?

-Kat
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> Been racking my brain and I don''t think there is a way to do it so
I
> come to the experts. I have a puppet server and a client. Pretty
> simple - so here is the problem. I have a job that runs on the CLIENT
> and creates a file. I want puppet to notice when this file changes on
> the CLIENT and then somehow have the SERVER get the file?
Take a look at exported resources:
http://reductivelabs.com/trac/puppet/wiki/ExportedResources

For a solution that doesn''t require modifying your current  
Puppetmaster config, you could set up SSH for key-based authentication  
between your client and server systems. Then you could have a change  
to the file on the client trigger the execution of scp, to copy the  
file to the server. Something like this ought to work:

file { "/client/file/path":
   checksum => md5
}

exec { "scp /client/file/path server:/server/file/path":
   subscribe => File["/client/file/path"],
   refreshonly => true
}

With refreshonly set to true, the exec resource will only be run with  
the resource it''s subscribed to changes, and with no source or content
specified for the file resource, Puppet will just keep track of when  
it changes.

-Josh

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