backend.rb

# The recipe that calls the method 

Chef::Log.info elb_name(node)
ruby_block "register_with_elb" do
  block do
    require 'AWS'
    if associate_elastic_ip # Make sure it has a white listed elastic IP 
      unless  production_primary_backendapp? # Production Primary backend app does not need to be on the load balancer any more. 
        ec2 = AWS::ELB::Base.new(:access_key_id => "yyyyyy", :secret_access_key => "xxxx")
        ec2.register_instances_with_load_balancer(:load_balancer_name => "#{elb_name(node)}", :instances => ["#{node[:ec2][:instance_id]}"] ) 
      end 
    end 
  end 
end

elb.rb

#other methods that work
#..
def production_primary_backendapp?
  roles = node.run_list.roles.first rescue nil 
  roles == "primary_backend_app_production"
end

gistfile1.rb

def associate_elastic_ip
  if has_elastic_ip?
    Chef::Log.info "Elastic ip is already associated."
    return true
  elsif free_ip = elastic_ips
    Chef::Log.info "Associating elastic ip #{free_ip} to this node"
    ec2 = AWS::EC2::Base.new(:access_key_id => "xxxxx", :secret_access_key => "yyyy")
    ec2.associate_address(:public_ip => free_ip, :instance_id => @node[:ec2][:instance_id])
    return true
  else
    Chef::Log.info "There are no more available elastic ips"
    return false
  end 
end

log.rb

2011-07-26_20:43:30.71009 [Tue, 26 Jul 2011 13:43:30 -0700] ERROR: ruby_block[register_with_elb] (/var/chef/cache/cookbooks/configure-site/recipes/backend.rb:145:in `from_file') had an error:
2011-07-26_20:43:30.71010 undefined method `production_primary_backendapp?' for Chef::Resource::RubyBlock
2011-07-26_20:43:30.71012 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource.rb:144:in `method_missing'
2011-07-26_20:43:30.71013 /var/chef/cache/cookbooks/configure-site/recipes/backend.rb:149:in `from_file'
2011-07-26_20:43:30.71014 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/provider/ruby_block.rb:28:in `call'
2011-07-26_20:43:30.71015 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/provider/ruby_block.rb:28:in `action_create'
2011-07-26_20:43:30.71016 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource.rb:395:in `send'
2011-07-26_20:43:30.71017 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource.rb:395:in `run_action'
2011-07-26_20:43:30.71018 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:53:in `run_action'
2011-07-26_20:43:30.71020 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:89:in `converge'
2011-07-26_20:43:30.71021 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:89:in `each'
2011-07-26_20:43:30.71022 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:89:in `converge'
2011-07-26_20:43:30.71024 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection.rb:94:in `execute_each_resource'
2011-07-26_20:43:30.71025 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:116:in `call'
2011-07-26_20:43:30.71026 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:116:in `call_iterator_block'
2011-07-26_20:43:30.71027 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:85:in `step'
2011-07-26_20:43:30.71028 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:104:in `iterate'
2011-07-26_20:43:30.71029 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:55:in `each_with_index'
2011-07-26_20:43:30.71030 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection.rb:92:in `execute_each_resource'
2011-07-26_20:43:30.71032 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:84:in `converge'
2011-07-26_20:43:30.71034 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/client.rb:268:in `converge'
2011-07-26_20:43:30.71035 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/client.rb:171:in `run'
2011-07-26_20:43:30.71036 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/application/client.rb:222:in `run_application'
2011-07-26_20:43:30.71037 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/application/client.rb:212:in `loop'
2011-07-26_20:43:30.71038 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/application/client.rb:212:in `run_application'
2011-07-26_20:43:30.71040 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/application.rb:62:in `run'
2011-07-26_20:43:30.71041 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/chef-client:26
2011-07-26_20:43:30.71042 /opt/ruby-enterprise/bin/chef-client:19:in `load'
2011-07-26_20:43:30.71043 /opt/ruby-enterprise/bin/chef-client:19
2011-07-26_20:43:30.71043 [Tue, 26 Jul 2011 13:43:30 -0700] ERROR: Running exception handlers
2011-07-26_20:43:30.71044 [Tue, 26 Jul 2011 13:43:30 -0700] ERROR: Exception handlers complete
2011-07-26_20:43:30.71045 [Tue, 26 Jul 2011 13:43:30 -0700] ERROR: NoMethodError:undefined method `production_primary_backendapp?' for Chef::Resource::RubyBlock
2011-07-26_20:43:30.71049 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource.rb:144:in `method_missing'
2011-07-26_20:43:30.71050 /var/chef/cache/cookbooks/configure-site/recipes/backend.rb:149:in `from_file'
2011-07-26_20:43:30.71051 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/provider/ruby_block.rb:28:in `call'
2011-07-26_20:43:30.71052 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/provider/ruby_block.rb:28:in `action_create'
2011-07-26_20:43:30.71053 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource.rb:395:in `send'
2011-07-26_20:43:30.71054 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource.rb:395:in `run_action'
2011-07-26_20:43:30.71055 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:53:in `run_action'
2011-07-26_20:43:30.71056 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:89:in `converge'
2011-07-26_20:43:30.71057 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:89:in `each'
2011-07-26_20:43:30.71058 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/runner.rb:89:in `converge'
2011-07-26_20:43:30.71061 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection.rb:94:in `execute_each_resource'
2011-07-26_20:43:30.71062 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:116:in `call'
2011-07-26_20:43:30.71063 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:116:in `call_iterator_block'
2011-07-26_20:43:30.71064 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:85:in `step'
2011-07-26_20:43:30.71065 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:104:in `iterate'
2011-07-26_20:43:30.71066 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection/stepable_iterator.rb:55:in `each_with_index'
2011-07-26_20:43:30.71067 /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/chef-0.9.14/bin/../lib/chef/resource_collection.rb:92:in `execute_each_resource'