Class: Chef::Knife::ClusterLaunch

Inherits:
Chef::Knife show all
Includes:
Ironfan::KnifeCommon
Defined in:
lib/chef/knife/cluster_launch.rb

Instance Attribute Summary

Attributes included from Ironfan::KnifeCommon

#broker, #problems

Instance Method Summary collapse

Methods included from Ironfan::KnifeCommon

#all_computers, #bootstrapper, #configure_dry_run, #confirm_execution, #confirm_or_exit, #die, #discover_computers, #display, #exit_if_unhealthy!, #gemfile, #get_relevant_slice, #get_slice, #has_problem, #healthy?, included, load_deps, #load_ironfan, #pick_apart, #predicate_str, #progressbar_for_threads, #relevant?, #run, #run_bootstrap, #section, #sub_command, #wait_for_ssh

Instance Method Details

#_runObject


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# File 'lib/chef/knife/cluster_launch.rb', line 66

def _run
  load_ironfan
  die(banner) if @name_args.empty?
  configure_dry_run

  #
  # Load the facet
  #
  full_target = get_slice(*@name_args)
  display(full_target)
  target = full_target.select(&:launchable?)

  warn_or_die_on_bogus_servers(full_target) unless full_target.select(&:bogus?).empty?

  die("", "#{ui.color("All computers are running -- not launching any.",:blue)}", "", 0) if target.empty?

  # If a bootstrap was requested, ensure that we will be able to perform the
  # bootstrap *before* trying to launch all of the servers in target. This
  # will save the user a lot of time if they've made a configuration mistake
  if config[:bootstrap]
    ensure_common_environment(target)
  end

  # Pre-populate information in chef
  section("Syncing to chef")
  target.save :providers => :chef

  unless target.empty?
    ui.info "Preparing shared resources:"
    all_computers(*@name_args).prepare
  end

  # Launch computers
  ui.info("")
  section("Launching computers", :green)
  display(target)
  launched = target.launch

  # As each server finishes, configure it. If we received an
  # exception launching any of the machines, remember it.

  launch_succeeded = true
  Ironfan.parallel(launched) do |computer|
    if (computer.is_a?(Exception)) then
      ui.error "Error launching #{computer.inspect}; skipping after-launch tasks.";
      launch_succeeded = false
    else
      perform_after_launch_tasks(computer) if computer.machine.perform_after_launch_tasks?
    end
  end

  if healthy? and launch_succeeded
    section('All computers launched correctly', :white)
    section('Applying aggregations:')
    all_computers(*@name_args).aggregate
  else
    section('Some computers could not be launched')
    exit 1
  end

  display(target)
end

#perform_after_launch_tasks(computer) ⇒ Object


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# File 'lib/chef/knife/cluster_launch.rb', line 129

def perform_after_launch_tasks(computer)
  # Try SSH
  unless config[:dry_run]
    if config[:wait_ssh]
      Ironfan.step(computer.name, 'trying ssh', :white)
      nil until wait_for_ssh(computer){ sleep @initial_sleep_delay ||= 10  }
    end
  end
  
  # Run Bootstrap
  if config[:bootstrap]
    Ironfan.step(computer.name, 'bootstrapping', :green)
    run_bootstrap(computer)
  end
end

#warn_or_die_on_bogus_servers(target) ⇒ Object


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# File 'lib/chef/knife/cluster_launch.rb', line 145

def warn_or_die_on_bogus_servers(target)
  ui.info("")
  ui.info "Cluster has servers in a transitional or undefined state (shown as 'bogus'):"
  ui.info("")
  display(target)
  ui.info("")
  unless config[:force]
    die(
      "Launch operations may be unpredictable under these circumstances.",
      "You should wait for the cluster to stabilize, fix the undefined server problems",
      "(run \"knife cluster show CLUSTER\" to see what the problems are), or launch",
      "the cluster anyway using the --force option.", "", -2)
  end
  ui.info("")
  ui.info "--force specified"
  ui.info "Proceeding to launch anyway. This may produce undesired results."
  ui.info("")
end