从红宝石使用刀命令而无需bash

Question

I'm trying to remove the following bash command from my ruby script:

nodes = "knife search 'chef_environment:#{env} AND recipe:#{microservice}' -i 2>&1 | tail -n 2"
node = %x[ #{nodes} ].split 
node.each do |n|
  puts n
end

And replace it with something like this:

node = Chef::Knife.search("chef_environment:#{env} AND recipe:#{microservice}").split

Is this possible? Is there any documentation regarding Chef::knife library in ruby and how to use it?

Answer 1

To access a chef server, you could try to use the ridley gem, which is also used by Berkshelf and thus generally up-to-date.

A usage example could be:

ridley = Ridley.from_chef_config('/path/to/knife.rb')
ridley.search(:node, "chef_environment:#{env} AND recipe:#{microservice}")

See the documentation of the gem for a more detailed description of its options.