chef undefined method `[]' for nil:NilClass with attributes

Question

I working on chef which i needs to call attribute value from attributes/default.rb file to recipe/default.rb file. I am invoked attribute values in recipe which throws an error

undefined method [] for nil:NilClass`

Can someone help me on this.

# attribute/default.rb
default['app']['dir'] =  "/opt/app/"

# recipe/default.rb
ruby_block 'print_name' do
  block do
    puts "My app dir #{ node['app']['dir'] } "
  end
end

Did you copy&paste this? The code looks correct in terms of that you should be able to access this attribute. The failure indicates that node['app'] is nil instead of a Hash. — StephenKing
i ran that code in the recipe file. but still i am facing nil class error. What is the solution for that. How to resolve it? — palani.p
Ah.. what's the name of the attributes directory? Is it really attribute/ as you write, or attributes/, as it is expected? Mind the trailing s! — StephenKing

Raushan Raushan · Accepted Answer · 2020-01-19T13:43:22

You can try writing like below in place of

puts "My app dir #{ node['app']['dir'] } "

write

puts "My app dir #{ node.default['app']['dir'] } "

default['app']['dir'] = "/opt/app/" #This is used in attributes/default.rb

This is priority. node.overwrite > node.normal > node.default

chef undefined method `[]' for nil:NilClass with attributes

1 Answers