[chef] Re: Upgrade Ubuntu from 12.04 to 14.04

[Noah Kantrowitz < >]

On Apr 27, 2015, at 3:43 PM, Jason J. W. Williams 
<
 >
 wrote:

> On Mon, Apr 27, 2015 at 3:39 PM, Noah Kantrowitz 
> <
 >
>  wrote:
>> Okay everyone, lets cool our collective jets with the unhelpful "Don't do 
>> that answers.
>> 
>> The best way to do this would probably be a few execute resources running 
>> the relevant CLI commands. Unfortunately the officially documented process 
>> from Canonical is to use the update-manager tool, which is an interactive 
>> curses app if I remember correctly. I would check to see if it has a 
>> non-interactive mode. Otherwise you can do it the really old fashioned way 
>> of replacing your sources.list and apt-get dist-upgrade.
>> 
>> --Noah
> 
> Honestly, if Mohammad is dead set on doing an upgrade, I think he'd be
> better of cooking up a bash script in a test environment that works
> and using some sort of parallel-SSH to apply it.
> 
> There's just too many ways for a distro upgrade to go sideways in very
> non-idempotent ways for a Chef run to be the right approach to do a
> mass upgrade of the OS.

Thats fine as an opinion, but multiple people responding to a question with 
"don't do that" breeds an unwelcoming atmosphere. I agree it is going to be a 
frustrating use case, but at a minimum let's answer the question to the best 
of our ability first and then urge caution after that. The "How? Don't!" 
thing is a cliche for a reason, and I know I personally hate being on the 
other side of it.

--Noah

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