Sometimes, you will be dealing with unique situations and need to create your own knife plugin. In this section, we will review how that is accomplished.
A custom knife plugin begins by creating a new plugin ruby file. The plugin file has to have a specific format. That format, in its simplest form, looks like this:
require 'chef/knife'
module ModuleName
class SubclassName < Chef::Knife
deps do
require 'chef/dependency'
end
banner 'knife subcommand argument VALUE (options)'
option :name_of_option,
:short => "-l VALUE",
:long => "--long-option-name VALUE",
:description => "The description for the option.",
:proc => Proc.new { code_to_run }
:boolean => true | false
:default => default_value
def run
end
endThe essential sections of this file are:
The required
chef/knifedirective provides the calls all knife plugins inherit fromModuleNameis the name space for our plugin...