CapistranoTask

You can tie iClassify in to Capistrano, giving you the power of it’s full text search engine for your Capistrano tasks.

Stick this in your Capfile, and go to town.

require ‘iclassify’
default_run_options[:pty] = true
set(:query, ENV[“QUERY”]) if ENV.has_key?(“QUERY”)

set(:query) do

    Capistrano::CLI.ui.ask "iClassify Query: "

end unless exists?(:query)
set(:ic_password, ENV[“IC_PASSWORD”]) if ENV.has_key?(“IC_PASSWORD”)

set(:ic_password) do

    Capistrano::CLI.password_prompt "iClassify Password: "

end unless exists?(:ic_password)
if ENV.has_key?(‘IC_USER’)

  set(:ic_user, ENV[“IC_USER”])

else

  set(:ic_user, ‘admin’);

end
if ENV.has_key?(‘IC_SERVER’)

  set(:ic_server, ENV[“IC_SERVER”])

else

  set(:ic_server, ‘https://iclassify/’)

end
ic= IClassify::Client.new(ic_server, ic_user, ic_password)

ic_nodes = ic.search(query, [ ‘fqdn’ ])
ic_nodes.each do |node|

  role :nodes, node.attrib?(‘fqdn’)

end
desc <<-DESC

  Invoke a single command on the remote servers. This is useful for performing \

  one-off commands that may not require a full task to be written for them. \

  Simply specify the command to execute via the COMMAND environment variable. \

  To execute the command only on certain roles, specify the ROLES environment \

  variable as a comma-delimited list of role names. Alternatively, you can \

  specify the HOSTS environment variable as a comma-delimited list of hostnames \

  to execute the task on those hosts, explicitly. Lastly, if you want to \

  execute the command via sudo, specify a non-empty value for the SUDO \

  environment variable.
Sample usage:
$ cap COMMAND=uptime HOSTS=foo.capistano.test invoke
$ cap ROLES=app,web SUDO=1 COMMAND=“tail -f /var/log/messages” invoke
DESC

task :invoke do

  command = ENV[“COMMAND”] || ""

  abort “Please specify a command to execute on the remote servers (via the COMMAND environment variable)” if command.empty?

  method = ENV[“SUDO”] ? :sudo : :run

  invoke_command(command, :via => method)

end
desc <<-DESC

  Begin an interactive Capistrano session. This gives you an interactive \

  terminal from which to execute tasks and commands on all of your servers. \

  (This is still an experimental feature, and is subject to change without \

  notice!)
Sample usage:
$ cap shell
DESC

task :shell do

  require ‘capistrano/shell’

 Capistrano*Shell.run(self)

end
desc <<-DESC

  Run puppet on each host that matches your query.  Defaults to \

  using the fqdn of the current host for the server.  Override with \

  SERVER.
You can specify a —tags value with TAGS.
DESC

task :puppet do

  puppet_server = nil

  if ENV.has_key?(“SERVER”)

    puppet_server = ENV[“SERVER”]

  else

    puppet_server = `hostname f`.chomp!

  end

  tags = ""

  if ENV.has_key?(“TAGS”)

    tags = "-tags #{ENV[“TAGS”]}"

  end

  sudo(“sleep $(expr $RANDOM \% 10); sudo puppetd —onetime —verbose —ignorecache —server #{puppet_server} #{tags}”)

end