Class: Chef::Knife::ClusterLaunch

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

Instance Method Summary collapse

Methods included from ClusterChef::KnifeCommon

#bootstrapper, #configure_dry_run, #confirm_execution, #confirm_or_exit, #die, #get_relevant_slice, #get_slice, included, #load_cluster_chef, load_deps, #predicate_str, #progressbar_for_threads, #relevant?, #run_bootstrap, #section, #sub_command

Instance Method Details

#display(target) ⇒ Object 



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# File 'lib/chef/knife/cluster_launch.rb', line 96

def display(target)
  super(target, ["Name", "InstanceID", "State", "Flavor", "Image", "AZ", "Public IP", "Private IP", "Created At", 'Volumes', 'Elastic IP']) do |svr|
    { 'launchable?' => (svr.launchable? ? "[blue]#{svr.launchable?}[reset]" : '-' ), }
  end
end

#perform_after_launch_tasks(server) ⇒ Object 



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# File 'lib/chef/knife/cluster_launch.rb', line 102

def perform_after_launch_tasks(server)
  # Wait for node creation on amazon side
  server.fog_server.wait_for{ ready? }

  # Try SSH
  unless config[:dry_run]
    nil until tcp_test_ssh(server.fog_server.dns_name){ sleep @initial_sleep_delay ||= 10  }
  end

  # Make sure our list of volumes is accurate
  ClusterChef.fetch_fog_volumes
  server.discover_volumes!

  # Attach volumes, etc
  server.sync_to_cloud

  # Run Bootstrap
  if config[:bootstrap]
    run_bootstrap(server, server.fog_server.dns_name)
  end
end

#run ⇒ Object 



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# File 'lib/chef/knife/cluster_launch.rb', line 58

def run
  load_cluster_chef
  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.bogus_servers.empty?

  die("", "#{ui.color("All servers are running -- not launching any.",:blue)}", "", 1) if target.empty?

  # Pre-populate information in chef
  section("Sync'ing to chef and cloud")
  target.sync_to_cloud
  target.sync_to_chef

  # Launch servers
  section("Launching machines", :green)
  target.create_servers

  ui.info("")
  display(target)

  # As each server finishes, configure it
  watcher_threads = target.parallelize do |svr|
    perform_after_launch_tasks(svr)
  end

  progressbar_for_threads(watcher_threads)

  display(target)
end

#tcp_test_ssh(hostname) ⇒ Object 



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# File 'lib/chef/knife/cluster_launch.rb', line 124

def tcp_test_ssh(hostname)
  tcp_socket = TCPSocket.new(hostname, 22)
  readable = IO.select([tcp_socket], nil, nil, 5)
  if readable
    Chef::Log.debug("sshd accepting connections on #{hostname}, banner is #{tcp_socket.gets}")
    yield
    true
  else
    false
  end
rescue Errno::ETIMEDOUT
  false
rescue Errno::ECONNREFUSED
  sleep 2
  false
ensure
  tcp_socket && tcp_socket.close
end

#warn_or_die_on_bogus_servers(target) ⇒ Object 



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# File 'lib/chef/knife/cluster_launch.rb', line 143

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