[chef] Re: Calling chefdk chef command from a bundle

[Daniel DeLeo < >]

On Tuesday, June 30, 2015 at 3:40 PM, Yoshi Spendiff wrote:
> Hi,
>  
> I'm writing a couple of thor jobs to configure a workstation for Chef 
> development. One of the things I want to do is to install a few gems into 
> the chefdk installed on the system if they don't exist. I thought it would 
> be simple enough to just shell out and run the chef command to install 
> these gems (i.e. `chef gem install kitchen-ec2` but calling the chef 
> command, or indeed the ChefDK ruby from within my bundle results in an 
> error stating that a gem can't be found.
>  
> So if I run bin/thor myorg:check (where bin/thor is a binstub in my bundle) 
> and in the thor jobs there's any command that calls the chef executable, 
> e.g.
> `chef -v` then I get the following:

I’ve noticed recently that when running any gem commands inside of a 
bundler’d ruby process, you need to wrap everything in

Bundler.with_clean_env do; your_gem_related_code; end;

This used to work fine without the clean env thing, so I think there is a 
recent change to either bundler or rubygems that caused this.
  
>  
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/spec_set.rb:92:in 
> `block in materialize': Could not find rake-10.4.2 in any of the sources 
> (Bundler::GemNotFound)
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/spec_set.rb:85:in 
> `map!'
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/spec_set.rb:85:in 
> `materialize'
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/definition.rb:139:in
>  `specs'
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/definition.rb:184:in
>  `specs_for'
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/definition.rb:173:in
>  `requested_specs'
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/environment.rb:18:in
>  `requested_specs'
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/runtime.rb:13:in 
> `setup'
> from /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler.rb:127:in 
> `setup'
> from 
> /Library/Ruby/Gems/2.0.0/gems/bundler-1.10.3/lib/bundler/setup.rb:18:in 
> `<top (required)>'
> from 
> /opt/chefdk/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in
>  `require'
> from 
> /opt/chefdk/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in
>  `require'

You’re definitely crossing the streams here. Bundler is installed to the 
system ruby, and you seem to have your environment variables set in a way 
that makes ruby load stuff from there. As Brandon mentions, `chef shell-init` 
should fix this.
  
>  
> or system('chef -v') then I get the following error:
> Could not find rake-10.4.2 in any of the sources
> Run `bundle install` to install missing gems.
>  
> My bundle has that rake gem but for ruby v2.0.x instead of v2.1.x which the 
> chefdk uses. I'm guessing that running from within a bundle is messing up 
> the bundle environment that the chef executable uses, but I've not the 
> knowlege of how this works to get it working.  
> Is there any way around this (other than use thor from the system ruby, 
> which would be the fallback, but not ideal)? Will dropping certain 
> environment variables related to bundler when shelling out fix the problem?

Aside from the above suggestions, run `env` and look for any GEM_* variables. 
rvm in particular works by setting these, if you’re an rvm user, there is a 
plugin for it to use ChefDK (but I can’t recall the specifics, sorry).
  
>  
> --  
> Yoshi Spendiff
> Ops Engineer
> Indochino
> Mobile: +1 778 952 2025
> Email: 
> 
 
>  
> (mailto:
 )




--  
Daniel DeLeo