class Fog::Libvirt::Compute::Server
Constants
- DOMAIN_CLEANUP_REGEXP
-
Locale-friendly removal of non-alpha nums
Attributes
The following attributes are only needed when creating a new vm
TODO: Add depreciation warning
The following attributes are only needed when creating a new vm
TODO: Add depreciation warning
Public Class Methods
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# File lib/fog/libvirt/models/compute/server.rb, line 50 def initialize(attributes={} ) @xml = attributes.delete(:xml) verify_boot_order(attributes[:boot_order]) super defaults.merge(attributes) initialize_nics initialize_volumes @user_data = attributes.delete(:user_data) end
Can be created by passing in :xml => “<xml to create domain/server>” or by providing :template_options => {
:name => "", :cpus => 1, :memory_size => 256 , :volume_template }
Public Instance Methods
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# File lib/fog/libvirt/models/compute/server.rb, line 262 def cloud_init_volume_name "#{name}-cloud-init.iso" end
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# File lib/fog/libvirt/models/compute/server.rb, line 253 def create_user_data_iso generate_config_iso(user_data) do |iso| vol = service.volumes.create(:name => cloud_init_volume_name, :capacity => "#{File.size(iso)}b", :allocation => "0G") vol.upload_image(iso) @iso_file = cloud_init_volume_name @iso_dir = File.dirname(vol.path) if vol.path end end
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# File lib/fog/libvirt/models/compute/server.rb, line 93 def destroy(options={ :destroy_volumes => false}) poweroff unless stopped? service.vm_action(uuid, :undefine) volumes.each { |vol| vol.destroy } if options[:destroy_volumes] true end
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# File lib/fog/libvirt/models/compute/server.rb, line 89 def disk_path volumes.first.path if volumes and volumes.first end
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# File lib/fog/libvirt/models/compute/server.rb, line 236 def generate_config_iso(user_data, &blk) Dir.mktmpdir('config') do |wd| generate_config_iso_in_dir(wd, user_data, &blk) end end
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# File lib/fog/libvirt/models/compute/server.rb, line 242 def generate_config_iso_in_dir(dir_path, user_data, &blk) FileUtils.touch(File.join(dir_path, "meta-data")) File.open(File.join(dir_path, 'user-data'), 'w') { |f| f.write user_data } isofile = Tempfile.new(['init', '.iso']).path unless system("genisoimage -output #{isofile} -volid cidata -joliet -rock #{File.join(dir_path, 'user-data')} #{File.join(dir_path, 'meta-data')}") raise Fog::Errors::Error.new("Couldn't generate cloud-init iso disk with genisoimage.") end blk.call(isofile) end
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# File lib/fog/libvirt/models/compute/server.rb, line 85 def mac nics.first.mac if nics && nics.first end
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# File lib/fog/libvirt/models/compute/server.rb, line 106 def poweroff action_status = service.vm_action(uuid, :destroy) reload action_status end
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# File lib/fog/libvirt/models/compute/server.rb, line 149 def private_ip_address ip_address(:private) end
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# File lib/fog/libvirt/models/compute/server.rb, line 153 def public_ip_address ip_address(:public) end
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# File lib/fog/libvirt/models/compute/server.rb, line 134 def ready? state == "running" end
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# File lib/fog/libvirt/models/compute/server.rb, line 100 def reboot action_status = service.vm_action(uuid, :reboot) reload action_status end
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# File lib/fog/libvirt/models/compute/server.rb, line 118 def resume action_status = service.vm_action(uuid, :resume) reload action_status end
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# File lib/fog/libvirt/models/compute/server.rb, line 63 def save raise Fog::Errors::Error.new('Saving an existing server may create a duplicate') unless new? create_or_clone_volume unless xml or @volumes create_user_data_iso if user_data @xml ||= to_xml self.id = (persistent ? service.define_domain(xml) : service.create_domain(xml)).uuid reload rescue => e raise Fog::Errors::Error.new("Error saving the server: #{e}") end
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# File lib/fog/libvirt/models/compute/server.rb, line 181 def scp(local_path, remote_path, upload_options = {}) requires :ssh_ip_address, :username scp_options = {} scp_options[:password] = password unless self.password.nil? scp_options[:key_data] = [private_key] if self.private_key scp_options[:proxy]= ssh_proxy unless self.ssh_proxy.nil? Fog::SCP.new(ssh_ip_address, username, scp_options).upload(local_path, remote_path, upload_options) end
Transfers a file
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# File lib/fog/libvirt/models/compute/server.rb, line 193 def setup(credentials = {}) requires :public_key, :ssh_ip_address, :username credentials[:proxy]= ssh_proxy unless ssh_proxy.nil? credentials[:password] = password unless self.password.nil? credentials[:key_data] = [private_key] if self.private_key commands = [ %{mkdir .ssh}, # %{passwd -l #{username}}, #Not sure if we need this here # %{echo "#{Fog::JSON.encode(attributes)}" >> ~/attributes.json} ] if public_key commands << %{echo "#{public_key}" >> ~/.ssh/authorized_keys} end # wait for domain to be ready Timeout::timeout(360) do begin Timeout::timeout(8) do Fog::SSH.new(ssh_ip_address, username, credentials.merge(:timeout => 4)).run('pwd') end rescue Errno::ECONNREFUSED sleep(2) retry rescue Net::SSH::AuthenticationFailed, Timeout::Error retry end end Fog::SSH.new(ssh_ip_address, username, credentials).run(commands) end
Sets up a new key
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# File lib/fog/libvirt/models/compute/server.rb, line 112 def shutdown action_status = service.vm_action(uuid, :shutdown) reload action_status end
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# File lib/fog/libvirt/models/compute/server.rb, line 157 def ssh(commands) requires :ssh_ip_address, :username ssh_options={} ssh_options[:password] = password unless password.nil? ssh_options[:proxy]= ssh_proxy unless ssh_proxy.nil? super(commands, ssh_options) end
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# File lib/fog/libvirt/models/compute/server.rb, line 167 def ssh_proxy begin require 'net/ssh/proxy/command' rescue LoadError Fog::Logger.warning("'net/ssh' missing, please install and try again.") exit(1) end # if this is a direct connection, we don't need a proxy to be set. return nil unless connection.uri.ssh_enabled? user_string= service.uri.user ? "-l #{service.uri.user}" : "" Net::SSH::Proxy::Command.new("ssh #{user_string} #{service.uri.host} nc %h %p") end
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# File lib/fog/libvirt/models/compute/server.rb, line 74 def start return true if active? action_status = service.vm_action(uuid, :create) reload action_status end
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# File lib/fog/libvirt/models/compute/server.rb, line 130 def stopped? state == "shutoff" end
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# File lib/fog/libvirt/models/compute/server.rb, line 124 def suspend action_status = service.vm_action(uuid, :suspend) reload action_status end
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# File lib/fog/libvirt/models/compute/server.rb, line 81 def update_autostart(value) service.update_autostart(uuid, value) end
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# File lib/fog/libvirt/models/compute/server.rb, line 225 def update_display attrs = {} service.update_display attrs.merge(:uuid => uuid) reload end
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# File lib/fog/libvirt/models/compute/server.rb, line 231 def vnc_port Fog::Logger.deprecation("#{self.class} => #vnc_port is deprecated, use #display[:port] instead [light_black](#{caller.first})[/]") display[:port] end
can’t use deprecate method, as the value is part of the display hash
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# File lib/fog/libvirt/models/compute/server.rb, line 144 def volumes # lazy loading of volumes @volumes ||= (@volumes_path || []).map{|path| service.volumes.all(:path => path).first } end
Private Instance Methods
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# File lib/fog/libvirt/models/compute/server.rb, line 273 def addresses(service_arg=service, options={}) addresses_method = self.method(:addresses_dhcp) # check if ruby-libvirt was compiled against a new enough version # that can use dhcp_leases, as otherwise it will not provide the # method dhcp_leases on any of the network objects. has_dhcp_leases = true begin service.networks.first.dhcp_leases(self.mac) rescue NoMethodError has_dhcp_leases = false rescue # assume some other odd exception. end # if ruby-libvirt not compiled with support, or remote library is # too old (must be newer than 1.2.8), then use old fallback if not has_dhcp_leases or service.libversion() < 1002008 addresses_method = self.method(:addresses_ip_command) end # replace current definition for this instance with correct one for # detected libvirt to perform check once for connection (class << self; self; end).class_eval do define_method(:addresses, addresses_method) end addresses(service_arg, options) end
This tests the library version before redefining the address method for this instance to use a method compatible with earlier libvirt libraries, or uses the dhcp method from more recent releases.
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# File lib/fog/libvirt/models/compute/server.rb, line 404 def addresses_dhcp(service_arg=service, options={}) mac=self.mac ip_address = nil nic = self.nics.find {|nic| nic.mac==mac} if !nic.nil? service.networks.all.each do |net| if net.name == nic.network leases = net.dhcp_leases(mac, 0) # Assume the lease expiring last is the current IP address ip_address = leases.sort_by { |lse| lse["expirytime"] }.last["ipaddr"] if !leases.empty? break end end end return { :public => [ip_address], :private => [ip_address] } end
This retrieves the ip address of the mac address using dhcp_leases It returns an array of public and private ip addresses Currently only one ip address is returned, but in the future this could be multiple if the server has multiple network interface
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# File lib/fog/libvirt/models/compute/server.rb, line 357 def addresses_ip_command(service_arg=service, options={}) mac=self.mac # Aug 24 17:34:41 juno arpwatch: new station 10.247.4.137 52:54:00:88:5a:0a eth0.4 # Aug 24 17:37:19 juno arpwatch: changed ethernet address 10.247.4.137 52:54:00:27:33:00 (52:54:00:88:5a:0a) eth0.4 # Check if another ip_command string was provided ip_command_global=service_arg.ip_command.nil? ? 'grep $mac /var/log/arpwatch.log|sed -e "s/new station//"|sed -e "s/changed ethernet address//g" |sed -e "s/reused old ethernet //" |tail -1 |cut -d ":" -f 4-| cut -d " " -f 3' : service_arg.ip_command ip_command_local=options[:ip_command].nil? ? ip_command_global : options[:ip_command] ip_command="mac=#{mac}; server_name=#{name.gsub(DOMAIN_CLEANUP_REGEXP, '_')}; "+ip_command_local ip_address=nil if service_arg.uri.ssh_enabled? ip_address=ssh_ip_command(ip_command, service_arg.uri) else # It's not ssh enabled, so we assume it is if service_arg.uri.transport=="tls" raise Fog::Errors::Error.new("TlS remote transport is not currently supported, only ssh") end ip_address=local_ip_command(ip_command) end # The Ip-address command has been run either local or remote now if ip_address=="" #The grep didn't find an ip address result" ip_address=nil else # To be sure that the command didn't return another random string # We check if the result is an actual ip-address # otherwise we return nil unless ip_address=~/^(\d{1,3}\.){3}\d{1,3}$/ raise Fog::Errors::Error.new( "The result of #{ip_command} does not have valid ip-address format\n"+ "Result was: #{ip_address}\n" ) end end return { :public => [ip_address], :private => [ip_address]} end
This retrieves the ip address of the mac address using ip_command It returns an array of public and private ip addresses Currently only one ip address is returned, but in the future this could be multiple if the server has multiple network interface
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# File lib/fog/libvirt/models/compute/server.rb, line 441 def create_or_clone_volume options = {:name => volume_name || default_volume_name} # Check if a disk template was specified if volume_template_name template_volume = service.volumes.all(:name => volume_template_name).first raise Fog::Errors::Error.new("Template #{volume_template_name} not found") unless template_volume begin volume = template_volume.clone("#{options[:name]}") rescue => e raise Fog::Errors::Error.new("Error creating the volume : #{e}") end else # If no template volume was given, let's create our own volume options[:pool_name] = volume_pool_name if volume_pool_name options[:format_type] = volume_format_type if volume_format_type options[:capacity] = volume_capacity if volume_capacity options[:allocation] = volume_allocation if volume_allocation begin volume = service.volumes.create(options) rescue => e raise Fog::Errors::Error.new("Error creating the volume : #{e}") end end @volumes.nil? ? @volumes = [volume] : @volumes << volume end
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# File lib/fog/libvirt/models/compute/server.rb, line 508 def default_display {:port => '-1', :listen => '127.0.0.1', :type => 'vnc', :password => '' } end
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# File lib/fog/libvirt/models/compute/server.rb, line 468 def default_iso_dir "/var/lib/libvirt/images" end
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# File lib/fog/libvirt/models/compute/server.rb, line 472 def default_volume_name "#{name}.#{volume_format_type || 'img'}" end
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# File lib/fog/libvirt/models/compute/server.rb, line 476 def defaults { :persistent => true, :cpus => 1, :memory_size => 256 *1024, :name => randomized_name, :os_type => "hvm", :arch => "x86_64", :domain_type => "kvm", :autostart => false, :iso_dir => default_iso_dir, :network_interface_type => "network", :network_nat_network => "default", :network_bridge_name => "br0", :boot_order => %w[hd cdrom network], :display => default_display, :cpu => {}, :hugepages => false, :guest_agent => true, :virtio_rng => {}, } end
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# File lib/fog/libvirt/models/compute/server.rb, line 427 def initialize_nics if nics nics.map! { |nic| nic.is_a?(Hash) ? service.nics.new(nic) : nic } else self.nics = [service.nics.new({:type => network_interface_type, :bridge => network_bridge_name, :network => network_nat_network})] end end
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# File lib/fog/libvirt/models/compute/server.rb, line 435 def initialize_volumes if attributes[:volumes] && !attributes[:volumes].empty? @volumes = attributes[:volumes].map { |vol| vol.is_a?(Hash) ? service.volumes.new(vol) : vol } end end
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# File lib/fog/libvirt/models/compute/server.rb, line 423 def ip_address(key) addresses[key].nil? ? nil : addresses[key].first end
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# File lib/fog/libvirt/models/compute/server.rb, line 331 def local_ip_command(ip_command) # Execute the ip_command locally # Initialize empty ip_address string ip_address="" IO.popen("#{ip_command}") do |p| p.each_line do |l| ip_address+=l end status=Process.waitpid2(p.pid)[1].exitstatus if status!=0 raise Fog::Errors::Error.new("The command #{ip_command} failed to execute with a clean exit code") end end #Strip any new lines from the string ip_address.chomp end
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# File lib/fog/libvirt/models/compute/server.rb, line 301 def ssh_ip_command(ip_command, uri) # Retrieve the parts we need from the service to setup our ssh options user=uri.user #could be nil host=uri.host keyfile=uri.keyfile port=uri.port # Setup the options ssh_options={} ssh_options[:keys]=[ keyfile ] unless keyfile.nil? ssh_options[:port]=port unless keyfile.nil? ssh_options[:paranoid]=true if uri.no_verify? begin result=Fog::SSH.new(host, user, ssh_options).run(ip_command) rescue Errno::ECONNREFUSED raise Fog::Errors::Error.new("Connection was refused to host #{host} to retrieve the ip_address for #{mac}") rescue Net::SSH::AuthenticationFailed raise Fog::Errors::Error.new("Error authenticating over ssh to host #{host} and user #{user}") end # Check for a clean exit code if result.first.status == 0 return result.first.stdout.strip else # We got a failure executing the command raise Fog::Errors::Error.new("The command #{ip_command} failed to execute with a clean exit code") end end
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# File lib/fog/libvirt/models/compute/server.rb, line 499 def verify_boot_order order = [] valid_boot_media = %w[cdrom fd hd network] if order order.each do |b| raise "invalid boot order, possible values are any combination of: #{valid_boot_media.join(', ')}" unless valid_boot_media.include?(b) end end end