Class: Chef::Knife::AzureServerCreate

Inherits:
Chef::Knife show all
Includes:
AzureBase, Knife::WinrmBase
Defined in:
lib/chef/knife/azure_server_create.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from AzureBase

#connection, #find_file, included, #is_image_windows?, #locate_config_value, #msg_pair, #msg_server_summary, #parse_publish_settings_file

Instance Attribute Details

#initial_sleep_delay ⇒ Object

Returns the value of attribute initial_sleep_delay.



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# File 'lib/chef/knife/azure_server_create.rb', line 50

def initial_sleep_delay
  @initial_sleep_delay
end

Instance Method Details

#bootstrap_common_params(bootstrap, server) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 452

def bootstrap_common_params(bootstrap, server)

  bootstrap.config[:run_list] = config[:run_list]
  bootstrap.config[:prerelease] = config[:prerelease]
  bootstrap.config[:first_boot_attributes] = locate_config_value(:json_attributes) || {}
  bootstrap.config[:bootstrap_version] = locate_config_value(:bootstrap_version)
  bootstrap.config[:distro] = locate_config_value(:distro)
  bootstrap.config[:template_file] = locate_config_value(:template_file)
  load_cloud_attributes_in_hints(server)
  bootstrap
end

#bootstrap_for_node(server, fqdn, port) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 499

def bootstrap_for_node(server,fqdn,port)
  bootstrap = Chef::Knife::Bootstrap.new
  bootstrap.name_args = [fqdn]
  bootstrap.config[:ssh_user] = locate_config_value(:ssh_user)
  bootstrap.config[:ssh_password] = locate_config_value(:ssh_password)
  bootstrap.config[:ssh_port] = port
  bootstrap.config[:identity_file] = locate_config_value(:identity_file)
  bootstrap.config[:chef_node_name] = locate_config_value(:chef_node_name) || server.name
  bootstrap.config[:use_sudo] = true unless locate_config_value(:ssh_user) == 'root'
  bootstrap.config[:use_sudo_password] = true if bootstrap.config[:use_sudo]
  bootstrap.config[:environment] = locate_config_value(:environment)
  # may be needed for vpc_mode
  bootstrap.config[:host_key_verify] = config[:host_key_verify]
  bootstrap.config[:secret] = locate_config_value(:secret)
  bootstrap.config[:secret_file] = locate_config_value(:secret_file)

  bootstrap_common_params(bootstrap, server)
end

#bootstrap_for_windows_node(server, fqdn, port) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 465

def bootstrap_for_windows_node(server, fqdn, port)
  if locate_config_value(:bootstrap_protocol) == 'winrm'

      load_winrm_deps
      if not Chef::Platform.windows?
        require 'gssapi'
      end

      bootstrap = Chef::Knife::BootstrapWindowsWinrm.new

      bootstrap.config[:winrm_user] = locate_config_value(:winrm_user) || 'Administrator'
      bootstrap.config[:winrm_password] = locate_config_value(:winrm_password)
      bootstrap.config[:winrm_transport] = locate_config_value(:winrm_transport)

      bootstrap.config[:winrm_port] = port

  elsif locate_config_value(:bootstrap_protocol) == 'ssh'
      bootstrap = Chef::Knife::BootstrapWindowsSsh.new
      bootstrap.config[:ssh_user] = locate_config_value(:ssh_user)
      bootstrap.config[:ssh_password] = locate_config_value(:ssh_password)
      bootstrap.config[:ssh_port] = port
      bootstrap.config[:identity_file] = locate_config_value(:identity_file)
      bootstrap.config[:host_key_verify] = locate_config_value(:host_key_verify)
  else
      ui.error("Unsupported Bootstrapping Protocol. Supported : winrm, ssh")
      exit 1
  end
  bootstrap.name_args = [fqdn]
  bootstrap.config[:chef_node_name] = config[:chef_node_name] || server.name
  bootstrap.config[:encrypted_data_bag_secret] = locate_config_value(:encrypted_data_bag_secret)
  bootstrap.config[:encrypted_data_bag_secret_file] = locate_config_value(:encrypted_data_bag_secret_file)
  bootstrap_common_params(bootstrap, server)
end

#cleanup_and_exit(remove_hosted_service_on_failure, remove_storage_service_on_failure) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 608

def cleanup_and_exit(remove_hosted_service_on_failure, remove_storage_service_on_failure)
  ui.warn("Cleaning up resources...")

  if remove_hosted_service_on_failure
    ret_val = connection.hosts.delete(remove_hosted_service_on_failure)
    ret_val.content.empty? ? ui.warn("Deleted created DNS: #{remove_hosted_service_on_failure}.") : ui.warn("Deletion failed for created DNS:#{remove_hosted_service_on_failure}. " + ret_val.text)
  end

  if remove_storage_service_on_failure
    ret_val = connection.storageaccounts.delete(remove_storage_service_on_failure)
    ret_val.content.empty? ? ui.warn("Deleted created Storage Account: #{remove_storage_service_on_failure}.") : ui.warn("Deletion failed for created Storage Account: #{remove_storage_service_on_failure}. " + ret_val.text)
  end
  exit 1
end

#create_server_def ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 539

def create_server_def
  server_def = {
    :azure_storage_account => locate_config_value(:azure_storage_account),
    :azure_dns_name => locate_config_value(:azure_dns_name),
    :azure_vm_name => locate_config_value(:azure_vm_name),
    :azure_service_location => locate_config_value(:azure_service_location),
    :azure_os_disk_name => locate_config_value(:azure_os_disk_name),
    :azure_source_image => locate_config_value(:azure_source_image),
    :azure_vm_size => locate_config_value(:azure_vm_size),
    :tcp_endpoints => locate_config_value(:tcp_endpoints),
    :udp_endpoints => locate_config_value(:udp_endpoints),
    :bootstrap_proto => locate_config_value(:bootstrap_protocol),
    :azure_connect_to_existing_dns => locate_config_value(:azure_connect_to_existing_dns),
    :winrm_user => locate_config_value(:winrm_user),
    :azure_availability_set => locate_config_value(:azure_availability_set),
    :azure_affinity_group => locate_config_value(:azure_affinity_group),
    :azure_network_name => locate_config_value(:azure_network_name),
    :azure_subnet_name => locate_config_value(:azure_subnet_name)
  }
  # If user is connecting a new VM to an existing dns, then
  # the VM needs to have a unique public port. Logic below takes care of this.
  if !is_image_windows? or locate_config_value(:bootstrap_protocol) == 'ssh'
    port = locate_config_value(:ssh_port) || '22'
    if locate_config_value(:azure_connect_to_existing_dns) && (port == '22')
       port = Random.rand(64000) + 1000
    end
  else
    port = locate_config_value(:winrm_port) || '5985'
    if locate_config_value(:azure_connect_to_existing_dns) && (port == '5985')
        port = Random.rand(64000) + 1000
    end
  end
  server_def[:port] = port

  if is_image_windows?
    server_def[:os_type] = 'Windows'
    if not locate_config_value(:winrm_password) or not locate_config_value(:bootstrap_protocol)
      ui.error("WinRM Password and Bootstrapping Protocol are compulsory parameters")
      exit 1
    end
    # We can specify the AdminUsername after API version 2013-03-01. However, in this API version,
    # the AdminUsername is a required parameter.
    # Also, the user name cannot be Administrator, Admin, Admin1 etc, for enhanced security (provided by Azure)
    if locate_config_value(:winrm_user).nil? || locate_config_value(:winrm_user).downcase =~ /admin*/
      ui.error("WinRM User is compulsory parameter and it cannot be named 'admin*'")
      exit
    end
    server_def[:admin_password] = locate_config_value(:winrm_password)
    server_def[:bootstrap_proto] = locate_config_value(:bootstrap_protocol)
  else
    server_def[:os_type] = 'Linux'
    server_def[:bootstrap_proto] = 'ssh'
    if not locate_config_value(:ssh_user)
      ui.error("SSH User is compulsory parameter")
      exit 1
    end
    unless locate_config_value(:ssh_password) or locate_config_value(:identity_file)
        ui.error("Specify either SSH Key or SSH Password")
        exit 1
    end

    server_def[:ssh_user] = locate_config_value(:ssh_user)
    server_def[:ssh_password] = locate_config_value(:ssh_password)
    server_def[:identity_file] = locate_config_value(:identity_file)
    server_def[:identity_file_passphrase] = locate_config_value(:identity_file_passphrase)
  end
  server_def
end

#get_role_server ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 283

def get_role_server()
  deploy = connection.deploys.queryDeploy(locate_config_value(:azure_dns_name))
  deploy.find_role(locate_config_value(:azure_vm_name))
end

#get_virtual_machine_status ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 268

def get_virtual_machine_status()
  role = get_role_server()
  unless role.nil?
    Chef::Log.debug("Role status is #{role.status.to_s}")
    if  "ReadyRole".eql? role.status.to_s
      return :vm_status_ready
    elsif "Provisioning".eql? role.status.to_s
      return :vm_status_provisioning
    else
      return :vm_status_not_detected
    end
  end
  return :vm_status_not_detected
end

#load_cloud_attributes_in_hints(server) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 437

def load_cloud_attributes_in_hints(server)
  # Modify global configuration state to ensure hint gets set by knife-bootstrap
  # Query azure and load necessary attributes.
  cloud_attributes = {}
  cloud_attributes["public_ip"] = server.publicipaddress
  cloud_attributes["vm_name"] = server.name
  cloud_attributes["public_fqdn"] = server.hostedservicename.to_s + ".cloudapp.net"
  cloud_attributes["public_ssh_port"] = server.sshport if server.sshport
  cloud_attributes["public_winrm_port"] = server.winrmport if server.winrmport

  Chef::Config[:knife][:hints] ||= {}
  Chef::Config[:knife][:hints]["azure"] ||= cloud_attributes

end

#load_winrm_deps ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 41

def load_winrm_deps
  require 'winrm'
  require 'em-winrm'
  require 'chef/knife/winrm'
  require 'chef/knife/bootstrap_windows_winrm'
end

#random_string(len = 10) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 220

def random_string(len=10)
  (0...len).map{65.+(rand(25)).chr}.join
end

#run ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 337

def run
  $stdout.sync = true
  storage = nil

  Chef::Log.info("validating...")
  validate!

  Chef::Log.info("creating...")

  config[:azure_dns_name] = get_dns_name(locate_config_value(:azure_dns_name))
  if not locate_config_value(:azure_vm_name)
    config[:azure_vm_name] = locate_config_value(:azure_dns_name)
  end

  remove_hosted_service_on_failure = locate_config_value(:azure_dns_name)
  if connection.hosts.exists?(locate_config_value(:azure_dns_name))
    remove_hosted_service_on_failure = nil
  end
  
  #If Storage Account is not specified, check if the geographic location has one to re-use
  if not locate_config_value(:azure_storage_account)
    storage_accts = connection.storageaccounts.all
    storage = storage_accts.find { |storage_acct| storage_acct.location.to_s == locate_config_value(:azure_service_location) }
    if not storage
      config[:azure_storage_account] = [strip_non_ascii(locate_config_value(:azure_vm_name)), random_string].join.downcase
      remove_storage_service_on_failure = config[:azure_storage_account]
    else
      remove_storage_service_on_failure = nil
      config[:azure_storage_account] = storage.name.to_s
    end
  else
    if connection.storageaccounts.exists?(locate_config_value(:azure_storage_account))
      remove_storage_service_on_failure = nil
    else
      remove_storage_service_on_failure = locate_config_value(:azure_storage_account)
    end   
  end

  begin
    connection.deploys.create(create_server_def)
    wait_until_virtual_machine_ready()
    server = get_role_server()
    fqdn = server.publicipaddress
  rescue Exception => e
    Chef::Log.error("Failed to create the server -- exception being rescued: #{e.to_s}")
    backtrace_message = "#{e.class}: #{e}\n#{e.backtrace.join("\n")}"
    Chef::Log.debug("#{backtrace_message}")
    cleanup_and_exit(remove_hosted_service_on_failure, remove_storage_service_on_failure)
  end

  msg_server_summary(server)

  if is_image_windows?
    # Set distro to windows-chef-client-msi
    config[:distro] = "windows-chef-client-msi" if (config[:distro].nil? || config[:distro] == "chef-full")

    if locate_config_value(:bootstrap_protocol) == 'ssh'
      port = server.sshport
      print "#{ui.color("Waiting for sshd on #{fqdn}:#{port}", :magenta)}"

      print(".") until tcp_test_ssh(fqdn,port) {
        sleep @initial_sleep_delay ||= 10
        puts("done")
      }

    elsif locate_config_value(:bootstrap_protocol) == 'winrm'
      port = server.winrmport

      print "#{ui.color("Waiting for winrm on #{fqdn}:#{port}", :magenta)}"

      print(".") until tcp_test_winrm(fqdn,port) {
        sleep @initial_sleep_delay ||= 10
        puts("done")
      }
    end
  
    puts("\n")
    bootstrap_for_windows_node(server,fqdn, port).run
  else
    unless server && server.publicipaddress && server.sshport
      Chef::Log.fatal("server not created")
      exit 1
    end

    port = server.sshport

    print "#{ui.color("Waiting for sshd on #{fqdn}:#{port}", :magenta)}"

    print(".") until tcp_test_ssh(fqdn,port) {
      sleep @initial_sleep_delay ||= 10
      puts("done")
    }

    puts("\n")
    bootstrap_for_node(server,fqdn,port).run
  end

  msg_server_summary(server)
end

#strip_non_ascii(string) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 216

def strip_non_ascii(string)
  string.gsub(/[^0-9a-z ]/i, '')
end

#tcp_test_ssh(fqdn, sshport) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 310

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

#tcp_test_winrm(ip_addr, port) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 288

def tcp_test_winrm(ip_addr, port)
	    hostname = ip_addr
  socket = TCPSocket.new(hostname, port)
	    return true
rescue SocketError
  sleep 2
  false
rescue Errno::ETIMEDOUT
  false
rescue Errno::EPERM
  false
rescue Errno::ECONNREFUSED
  sleep 2
  false
rescue Errno::EHOSTUNREACH
  sleep 2
  false
rescue Errno::ENETUNREACH
  sleep 2
  false
end

#validate! ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 518

def validate!
  super([
        :azure_subscription_id,
        :azure_mgmt_cert,
        :azure_api_host_name,
        :azure_source_image,
        :azure_vm_size,
  ])
  if locate_config_value(:azure_connect_to_existing_dns) && locate_config_value(:azure_vm_name).nil?
    ui.error("Specify the VM name using --azure-vm-name option, since you are connecting to existing dns")
    exit 1
  end
  if locate_config_value(:azure_service_location) && locate_config_value(:azure_affinity_group)
    ui.error("Cannot specify both --azure_service_location and --azure_affinity_group, use one or the other.")
    exit 1
  elsif locate_config_value(:azure_service_location).nil? && locate_config_value(:azure_affinity_group).nil?
    ui.error("Must specify either --azure_service_location or --azure_affinity_group.")
    exit 1
  end
end

#wait_for_virtual_machine_state(vm_status_goal, total_wait_time_in_minutes, retry_interval_in_seconds) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 239

def wait_for_virtual_machine_state(vm_status_goal, total_wait_time_in_minutes, retry_interval_in_seconds)
  vm_status_ordering = {:vm_status_not_detected => 0, :vm_status_provisioning => 1, :vm_status_ready => 2}
  vm_status_description = {:vm_status_not_detected => 'any', :vm_status_provisioning => 'provisioning', :vm_status_ready => 'ready'}

  print ui.color("Waiting for virtual machine to reach status '#{vm_status_description[vm_status_goal]}'", :magenta)

  total_wait_time_in_seconds = total_wait_time_in_minutes * 60
  max_polling_attempts = total_wait_time_in_seconds / retry_interval_in_seconds
  polling_attempts = 0

  wait_start_time = Time.now

  begin
    vm_status = get_virtual_machine_status()
    vm_ready = vm_status_ordering[vm_status] >= vm_status_ordering[vm_status_goal]
    print '.'
    sleep retry_interval_in_seconds if !vm_ready
    polling_attempts += 1
  end until vm_ready || polling_attempts >= max_polling_attempts

  if ! vm_ready
    raise Chef::Exceptions::CommandTimeout, "Virtual machine state '#{vm_status_description[vm_status_goal]}' not reached after #{total_wait_time_in_minutes} minutes."
  end

  elapsed_time_in_minutes = ((Time.now - wait_start_time) / 60).round(2)
  print ui.color("vm state '#{vm_status_description[vm_status_goal]}' reached after #{elapsed_time_in_minutes} minutes.\n", :cyan)
  vm_status
end

#wait_until_virtual_machine_ready(retry_interval_in_seconds = 30) ⇒ Object 



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# File 'lib/chef/knife/azure_server_create.rb', line 224

def wait_until_virtual_machine_ready(retry_interval_in_seconds = 30)
  vm_status = nil
  puts

  begin
    vm_status = wait_for_virtual_machine_state(:vm_status_provisioning, 5, retry_interval_in_seconds)
    if vm_status != :vm_status_ready
      wait_for_virtual_machine_state(:vm_status_ready, 15, retry_interval_in_seconds)
    end
  rescue Exception => e
    Chef::Log.error("#{e.to_s}")
    raise 'Verify connectivity to Azure and subscription resource limit compliance (e.g. maximum CPU core limits) and try again.'
  end
end