[chef] Re: RE: RE: Re: Upgrade Ubuntu from 12.04 to 14.04

["Jason J. W. Williams" < >]

On Mon, Apr 27, 2015 at 1:12 PM, Mohammad Fattahian
<
 >
 wrote:
> Understood. BTW is there any way to upgrade OS via Chef? Our recipes are not
> that much OS oriented. I hope I can do an upgrade via Chef. Also we don’t
> have enough resources to recreate the servers with 14.04 from scratch.

I'd recommend investing your resources into making your cookbooks able
to reprovision the servers from scratch rather than in trying to make
Chef handle your Ubuntu upgrade. In my experience upgrading Ubuntu (or
any distro) is asking for trouble later from mismatched dependencies
and other driftwood left behind. Also, if your cookbooks can bootstrap
a server from a base OS install, you'll be able to recover from server
failures as an extremely useful benefit.

We recently went through upgrading our cookbooks to be 14.04 friendly,
which was relatively minimal effort.  Then we just provisioned new
servers one at a time and took down the old ones.

-J