Class: Cloudkick::Command::Pssh

Inherits:
Base
  • Object
show all
Defined in:
lib/cloudkick/commands/parallel.rb

Instance Attribute Summary

Attributes inherited from Base

#args

Instance Method Summary collapse

Methods inherited from Base

#client, #credentials, #display, #extract_option, #initialize

Constructor Details

This class inherits a constructor from Cloudkick::Command::Base

Instance Method Details

#index ⇒ Object 



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# File 'lib/cloudkick/commands/parallel.rb', line 5

def index
  unless args.size % 2 == 1 and args.size <= 5
    raise CommandFailed, 'usage: cloudkick pssh --query <query> ' \
    '<command> ' \
    '[--username <username>]'
  end

  query = extract_option('--query')
  username = extract_option('--username')
  command = args.last.strip.downcase rescue nil
  
  file = Tempfile.new('ck')

  if query
    client.get('nodes', query).each do |node|
      file.puts node.ipaddress
    end
  else
    client.get('nodes').each do |node|
      file.puts node.ipaddress
    end
  end
  
  file.flush
  begin
    if username
      system("pssh -i -h #{file.path} -l #{username} '#{command}'")
    else
      system("pssh -i -h #{file.path} '#{command}'")
    end
  rescue
    raise CommandFailed, 'cloudkick: command not found: pssh'
  end
  file.close
end