Roles contain recipes:
$ knife role list
All the recipes that are in that role
$ knife role show <role_name>
To see the nodes:
$ knife node list
$ knife node show <node_name>
To register a brand new machine with chef
$ knife bootstrap
This will SSH into the machine, download chef package, install chef to /opt, and get it running and registered with the chef server, see ~/.chef/knife.rb,
Before adding/pushing a change in chef
$ knife spork role from file roles/key.json
$ knife spork omni logstash --remote
when logstash version:
$ knife spork bump logstash
then
$ knife spork omni logstash --remote