[chef] Re: Re: Re: release 0.9.12 does not include [CHEF-1423] - Support versions of recipes on the run list

[Joshua Timberman < >]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Ohai!

On Jan 11, 2011, at 2:33 AM, Ringo De Smet wrote:

> Have you also been thinking of versioning roles? I think this would
> come in handy to evolve your setups.
> 
> The role "webserver" today could be totally different tomorrow, so
> being able to link 
> 
 
>  to <cookbooks>@1.0 and 
> 
 
> to <cookbooks>@2.0 makes sense to me.


I think this might be covered by environment run lists in 0.10 roles. The 
cookbook version constraints will be used in environments themselves.

% cat environments/production.rb
name "production"
cookbook_versions(
  "apache" => "1.0"
)

% cat environments/development.rb
name "development"
cookbook_versions(
  "apache" => "1.5"
)

All the cookbooks would be versioned, and then you can pin a particular 
version to an environment. If you wanted to test a new deployment in a 
particular environment, for example swapping out apache for nginx in 
development:

% cat roles/webserver.rb
name "webserver"
env_run_lists(
  "production" => ["recipe[apache]"],
  "development" => ["recipe[nginx]"]
)


- -- 
Opscode, Inc
Joshua Timberman, Technical Evangelist
IRC, Skype, Twitter, Github: jtimberman

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (Darwin)

iEYEARECAAYFAk0sb5AACgkQO97WSdVpzT2V7ACfRQqxuPPruVShibHTWMyL1uiZ
i/8AoI0VUDE/HiWXNBFzeWMS1zNwdPl4
=S1SU
-----END PGP SIGNATURE-----