I show the log which is I configure knife initially. It is simply default setup.

knife configure

$ bundle exec knife configure
WARNING: No knife configuration file found
Where should I put the config file? [/Users/shinyay/.chef/knife.rb] 
Please enter the chef server URL: [http://Shinya-MBA-2011.local:4000] 
Please enter an existing username or clientname for the API: [shinyay] 
Please enter the validation clientname: [chef-validator] 
Please enter the location of the validation key: [/etc/chef/validation.pem] 
Please enter the path to a chef repository (or leave blank): 
*****

You must place your client key in:
  /Users/shinyay/.chef/shinyay.pem
Before running commands with Knife!

*****

You must place your validation key in:
  /etc/chef/validation.pem
Before generating instance data with Knife!

*****
Configuration file written to /Users/shinyay/.chef/knife.rb