[chef] Re: What is the difference between the following following 2 gem installation methods?

[Jeremy Voorhis < >]

In the compilation phase, you can just use the Ruby language directly.

    def should_install_right_aws?

      # your custom logic here...

    end

    r = gem_package "right_aws" do

      version node['aws']['right_aws_version']

      action :nothing

    end

    r.run_action(:install) if should_install_right_aws?

Best,

Jeremy Voorhis

On Mar 8, 2012, at 2:44 PM, Sachin Sagar Rai wrote:

Thanks Guys! for clarifying.

Is there any way to make the gem installation conditional? Like `only_if` ? So that the chef-client doesn't install those gems in each run?

-------------------------------------------

@millisami
~ Sachin Sagar Rai
Ruby on Rails Developer
http://tfm.com.np
http://nepalonrails.tumblr.com

Sent with Sparrow

On Thursday, March 8, 2012 at 8:23 PM, Bryan McLellan wrote:

On Thu, Mar 8, 2012 at 4:43 AM, Sachin Sagar Rai < "> > wrote:

What is the difference between the following following 2 gem installation

methods?

    gem_package "mysql" do

      action :install

    end

This is used to install a gem to your system, such as when you're

installing a Ruby application to run as a service.

    r = gem_package "right_aws" do

      version node['aws']['right_aws_version']

      action :nothing

    end

    r.run_action(:install)

    require 'rubygems'

    Gem.clear_paths

This is used to install a gem immediately so you can use the gem in a

Chef recipe. In Chef 0.10.10+ this will be replaced by:

chef_gem "right_aws" do

version node['aws']['right_aws_version']

end

http://tickets.opscode.com/browse/CHEF-2879

Bryan