Upgrading to Puppet 4 - what about the modules

[Ugo Bellavance]

Hi,

I'm currently running a puppet 3 server that serves about 20 puppet 3 clients.  I use a number of modules, and most of them are not compatible with puppet 4.  There is at least one module that is not compatible with puppet 4. Is puppet 4 backwards compatible somehow or do we need to have all our modules puppet 4-ready before upgrading?

Thanks,

Ugo

[Rob Nelson]

Generally speaking, modules created for Puppet 3 are likely to work in puppet 4 without changes. Of course, that's not to say that all will, you will have to test and make sure yourself since the module author has not.

However, if a module on the forge does not support puppet 3 by now, that may be a warning sign that development has stalled or the module has been migrated to another namespace. You should attempt to discover if either are the case, so you can plan accordingly - there's no guarantee a module designed for Puppet 3 that is incidentally compatible with Puppet 4 will also be compatible with future versions of puppet 5, and a lack of bug fixes may be problematic as well. Something to explore, anyway.

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[mobios]

As i updated to puppet 4 i had to modify my modules to be puppet 4 ready.

 

   For example:

   All custom defines need to be in there own manifest and cant be included in other manifests. 

   Regards

   mobios

[Ugo Bellavance]

Oh, so modules that claim to be non-puppet3-compatible from now on is because they implemented things that are only supported in Puppet 4?  It's clearer in my head now.  I'll try the modules I use under puppet 4 and see which break.  I'm pretty sure that my current puppet setup will not work as I still use import statements.  It was deprecated in puppet3, I guess it is not supported in 4?

Thanks,

Ugo

[Henrik Lindberg]

While being a recommendation that is not true in general. If you don't
follow that rule, there are other rules you must follow.

- henrik

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