Class: Chef::Knife::SceServerCreate

Inherits:
Chef::Knife show all
Includes:
SceBase
Defined in:
lib/chef/knife/sce_server_create.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from SceBase

#connection, #connection_storage, #datacenter_id, included, #locate_config_value, #msg_pair

Instance Attribute Details

#initial_sleep_delay ⇒ Object

Returns the value of attribute initial_sleep_delay.



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# File 'lib/chef/knife/sce_server_create.rb', line 36

def initial_sleep_delay
  @initial_sleep_delay
end

#server ⇒ Object (readonly)

Returns the value of attribute server.



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# File 'lib/chef/knife/sce_server_create.rb', line 37

def server
  @server
end

Instance Method Details

#bootstrap_for_node(server, ssh_host) ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 284

def bootstrap_for_node(server,ssh_host)
  
  # Chef::Knife:Ssh is going to use ssh_user setting from knife.rb
  # over the one that we hand to it.
  # To overrule this setting we have to override to Chef knife.rb setting.
  Chef::Config[:knife][:ssh_user] = config[:sce_ssh_user]
  
  bootstrap = Chef::Knife::Bootstrap.new
  bootstrap.name_args = [ssh_host]
  bootstrap.config[:run_list] = locate_config_value(:run_list) || []
  bootstrap.config[:ssh_user] = config[:sce_ssh_user]
  bootstrap.config[:ssh_port] = config[:ssh_port]
  bootstrap.config[:ssh_gateway] = config[:ssh_gateway]
  bootstrap.config[:identity_file] = config[:identity_file]
  bootstrap.config[:chef_node_name] = locate_config_value(:chef_node_name) || server.id
  bootstrap.config[:prerelease] = config[:prerelease]
  bootstrap.config[:bootstrap_version] = locate_config_value(:bootstrap_version)
  bootstrap.config[:first_boot_attributes] = locate_config_value(:json_attributes) || {}
  bootstrap.config[:distro] = locate_config_value(:distro) || "chef-full"
  bootstrap.config[:use_sudo] = true unless config[:sce_ssh_user] == 'root'
  bootstrap.config[:template_file] = locate_config_value(:template_file)
  bootstrap.config[:environment] = config[:environment]
  bootstrap.config[:host_key_verify] = config[:host_key_verify]
  bootstrap
end

#create_server_def ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 349

def create_server_def
  server_def = {
    :name => locate_config_value(:chef_node_name),
    :image_id => locate_config_value(:sce_image),
    :instance_type => locate_config_value(:sce_flavor),
    :location => datacenter_id,
    :key_name => locate_config_value(:sce_key_name)
  }
  if locate_config_value(:sce_vlan_id)
    server_def[:vlan_id] = locate_config_value(:sce_vlan_id)
  end
  if locate_config_value(:secondary_ip)
    server_def[:secondary_ip] = locate_config_value(:secondary_ip)
  end

  %w{ip is_mini_ephemeral configuration_data anti_collocation_instance volume_id}.each do |parm|
    server_def[parm.to_sym] = locate_config_value(parm.to_sym) if locate_config_value(parm.to_sym)
  end
  server_def
end

#eip_scope ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 341

def eip_scope
  if vlan_mode?
    "vpc"
  else
    "standard"
  end
end

#run ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 209

def run
  
  $stdout.sync = true
  
  Fog.timeout = Chef::Config[:knife][:sce_max_timeout] || 6000

  validate!

  requested_ip = config[:associate_ip] if config[:associate_ip]

  # For VPC EIP assignment we need the allocation ID so fetch full EIP details
  # elastic_ip = connection.addresses.detect{|addr| addr if addr.public_ip == requested_elastic_ip}
  
  begin
    definition = create_server_def
    # SCE library gives me an excon response object, we have to fetch the server object ourselves:
    excon_response = connection.create_instance(definition[:name], definition[:image_id], definition[:instance_type], definition[:location], definition)
    @server = connection.servers.get(excon_response.data[:body]["instances"][0]["id"])
    
    raise "Creating a server failed." if @server.nil?
    
    msg_pair("Instance ID", @server.id.to_s)
    msg_pair("Name", @server.name.to_s)
    msg_pair("Flavor", @server.instance_type.to_s)
    msg_pair("Image", @server.image.name.to_s)
    msg_pair("Region", @server.location.location)
    msg_pair("SSH Key", @server.key_name.to_s)
    msg_pair("Owner", @server.owner.to_s)
    msg_pair("Environment", config[:environment] || '_default')
    msg_pair("Run List", (config[:run_list] || []).join(', '))
    msg_pair("JSON Attributes",config[:json_attributes]) unless !config[:json_attributes] || config[:json_attributes].empty?
    msg_pair("VLAN ID", @server.primary_ip["vlan"]["name"].to_s) if @server.primary_ip["vlan"]
    msg_pair("Volume IDs", @server.volume_ids.join(",").to_s) if @server.volume_ids

    print "\n#{ui.color("Waiting for server", :magenta)}"
    @server.wait_for { print "."; ready? }
    
    msg_pair("\nPublic DNS Name", @server.primary_ip["hostname"].to_s)
    msg_pair("Public IP Address", @server.primary_ip["ip"].to_s)
    if @server.secondary_ip
      ips = []
      @server.secondary_ip.each {|item| ips << item['ip']}
      msg_pair("Secondary IP Addresses", ips.join(","))
    end

    wait_for_sshd(ssh_connect_host)
   
    Chef::Config[:knife][:hints] ||= {}
    Chef::Config[:knife][:hints]["sce"] ||= {}
    Chef::Config[:knife][:hints]["sce"].merge!({
      'server_id' => @server.id.to_s,
      'region' => @server.location.location,
      'flavor' => @server.instance_type.to_s,
      'image' => @server.image.name.to_s
    })
    if @server.primary_ip["vlan"]
      Chef::Config[:knife][:hints]["sce"].merge!({
        'vlan' => @server.primary_ip["vlan"]["name"].to_s
      })
    end
    if @server.volume_ids
      Chef::Config[:knife][:hints]["sce"].merge!({
        'volumes' => @server.volume_ids
      })
    end

    bootstrap_for_node(@server, ssh_connect_host).run unless locate_config_value(:no_bootstrap)
    
  rescue Excon::Errors::PreconditionFailed => e
    ui.error e.response.data[:body]
    exit 1
  end
  
end

#ssh_connect_host ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 405

def ssh_connect_host
  @ssh_connect_host ||= if config[:server_connect_attribute]
    server.send(config[:server_connect_attribute])
  else
    server.ip.to_s
  end
end

#tcp_test_ssh(hostname, ssh_port) ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 186

def tcp_test_ssh(hostname, ssh_port)
  tcp_socket = TCPSocket.new(hostname, ssh_port)
  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 SocketError, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ENETUNREACH, IOError
  sleep 2
  false
rescue Errno::EPERM, Errno::ETIMEDOUT
  false
ensure
  tcp_socket && tcp_socket.close
end

#tunnel_test_ssh(hostname, &block) ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 382

def tunnel_test_ssh(hostname, &block)
  gw_host, gw_user = config[:ssh_gateway].split('@').reverse
  gw_host, gw_port = gw_host.split(':')
  gateway = Net::SSH::Gateway.new(gw_host, gw_user, :port => gw_port || 22)
  status = false
  gateway.open(hostname, config[:ssh_port]) do |local_tunnel_port|
    status = tcp_test_ssh('localhost', local_tunnel_port, &block)
  end
  status
rescue SocketError, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ENETUNREACH, IOError
  sleep 2
  false
rescue Errno::EPERM, Errno::ETIMEDOUT
  false
end

#validate! ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 316

def validate!

  super([:ibm_username, :ibm_password])

  if locate_config_value(:sce_flavor).nil?
    ui.error("No flavor provided.  Use knife sce image describe to list supported flavors for used image.")
    exit 1
  else
    
    flavor_found = false
    requested_image = connection.images.get(locate_config_value(:sce_image))
    requested_image.supported_instance_types.each do |sit|
      if sit.id.to_s.eql?( locate_config_value(:sce_flavor) )
        flavor_found = true
      end
    end
    if !flavor_found
      ui.error("Flavor #{config[:sce_flavor]} is not supported for image #{locate_config_value(:sce_image)}.  Use knife sce image describe to list supported flavors for used image.")
      exit 1
    end
    
  end

end

#vlan_mode? ⇒ Boolean

Returns:

  • (Boolean) 


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

def vlan_mode?
  # Amazon Virtual Private Cloud requires a subnet_id. If
  # present, do a few things differently
  !!locate_config_value(:vlan_id)
end

#wait_for_direct_sshd(hostname, ssh_port) ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 398

def wait_for_direct_sshd(hostname, ssh_port)
  print(".") until tcp_test_ssh(ssh_connect_host, ssh_port) {
    sleep @initial_sleep_delay ||= (vlan_mode? ? 40 : 10)
    puts("done")
  }
end

#wait_for_server_active(server) ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 205

def wait_for_server_active(server)
  server.wait_for { print "."; ready? }
end

#wait_for_sshd(hostname) ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 370

def wait_for_sshd(hostname)
  config[:ssh_gateway] ? wait_for_tunnelled_sshd(hostname) : wait_for_direct_sshd(hostname, config[:ssh_port])
end

#wait_for_tunnelled_sshd(hostname) ⇒ Object 



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# File 'lib/chef/knife/sce_server_create.rb', line 374

def wait_for_tunnelled_sshd(hostname)
  print(".")
  print(".") until tunnel_test_ssh(ssh_connect_host) {
    sleep @initial_sleep_delay ||= (vlan_mode? ? 40 : 10)
    puts("done")
  }
end