[cookbooks] Added network cookbook with network_interface resource

cookbooks/network/README.md

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+# Network cookbook
+
+## Resources
+
+* network_interface - configure network interface
+
+    network_interface 'eth0' do
+      address '192.168.1.2'
+      netmask '255.255.255.0'
+    end
+
+  or
+
+    # configure VLAN interface with automatic address via DHCP
+    network_interface 'eth0.50'
+
+  Attributes:
+
+  * address - IPv4 network interface address
+  * netmask - network mask in IPv4 format (e.g. '255.255.255.0')
+  * vlan    - vlan ID
+  * mtu     - interface's MTU value
+  * metric  - interface's metric value
+  * onboot  - start this interface on boot (defaults to true)
+
+

cookbooks/network/metadata.rb

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+maintainer       "Mirantis Inc."
+maintainer_email "product@mirantis.com"
+license          "Apache 2.0"
+description      "Installs/Configures nailgun"
+long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
+version          "0.0.1"
+
+supports "centos"
+
+

cookbooks/network/providers/interface.rb

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+require 'chef/shell_out'
+
+def load_current_resource
+  cmd = run_command("ifconfig | awk '/^#{full_device_name} /,/^$/'")
+
+  config = cmd.stdout.strip
+
+  return if config.empty?
+
+  
+  interface = Chef::Resource::NetworkInterface.new(new_resource.name)
+  interface.vlan @new_resource.vlan
+  # interface.hwaddress = $1 if /HWaddr (\S+)/ =~ config
+  interface.address $1 if /inet addr:(\S+)/ =~ config
+  interface.netmask $1 if /Mask:(\S+)/ =~ config
+  interface.mtu $1.to_i if /MTU:(\d+)/ =~ config
+  interface.metric $1.to_i if /Metric:(\d+)/ =~ config
+
+  interface.state = (/ UP / =~ config) ? :up : :down
+
+  @current_resource = interface
+end
+
+action :create do
+  if !current_resource && new_resource.vlan
+    Chef::Log.debug("Creating VLAN subinterface #{full_device_name}")
+    run_command("vconfig add #{new_resource.device} #{new_resource.vlan}")
+  end
+
+  if current_resource == new_resource
+    Chef::Log.debug("Skipping configuration of network interface as current configuration matches target one")
+    next
+  end
+
+  Chef::Log.info("Configuring network interface #{full_device_name}")
+
+  command =  "ifconfig #{full_device_name} #{new_resource.address}"
+  command << " netmask #{new_resource.netmask}" if new_resource.netmask
+  command << " metric #{new_resource.metric}" if new_resource.metric
+  command << " mtu #{new_resource.mtu}" if new_resource.mtu
+
+  Chef::Log.debug("Running command: #{command}")
+
+  run_command(command)
+
+  new_resource.state = current_resource ? current_resource.state : :down
+  new_resource.updated_by_last_action(true)
+
+  create_config
+end
+
+action :delete do
+  if current_resource && current_resource.state != :down
+    Chef::Log.info("Disabling network interface #{full_device_name}")
+
+    run_command("ifconfig #{full_device_name} down")
+
+    new_resource.state = :down
+    new_resource.updated_by_last_action(true)
+  end
+
+  if current_resource && current_resource.vlan
+    Chef::Log.debug("Removing networking interface #{full_device_name}")
+
+    run_command("vconfig rem #{full_device_name}")
+  end
+
+  delete_config
+end
+
+action :up do
+  if current_resource && current_resource.state == :up
+    Chef::Log.debug("Network interface #{full_device_name} is already up")
+    next
+  end
+
+  Chef::Log.info("Enabling network interface #{full_device_name}")
+
+  run_command("ifconfig #{full_device_name} up")
+
+  new_resource.state = :up
+  new_resource.updated_by_last_action(true)
+end
+
+action :down do
+  if current_resource && current_resource.state == :down
+    Chef::Log.debug("Network interface #{full_device_name} is already down")
+    next
+  end
+
+  Chef::Log.info("Disabling network interface #{full_device_name}")
+
+  run_command("ifconfig #{full_device_name} down")
+
+  new_resource.state = :down
+  new_resource.updated_by_last_action(true)
+end
+
+private
+
+def full_device_name
+  name = new_resource.device
+  name += ".#{new_resource.vlan}" if new_resource.vlan
+  name
+end
+
+def create_config
+  template "/etc/sysconfig/network-scripts/ifcfg-#{full_device_name}" do
+    source 'ifcfg.erb'
+    owner 'root'
+    group 'root'
+    mode 0644
+
+    variables({
+      :device => new_resource.device,
+      :vlan => new_resource.vlan,
+      :address => new_resource.address,
+      :netmask => new_resource.netmask,
+      :onboot => new_resource.onboot,
+    })
+
+    action :create
+  end
+end
+
+def delete_config
+  template "/etc/sysconfig/network-scripts/ifcfg-#{full_device_name}" do
+    source 'ifcfg.erb'
+
+    action :delete
+  end
+end
+
+def run_command(command, options={})
+  cmd = Chef::ShellOut.new(command, options)
+  cmd.run_command
+  cmd.error!
+  cmd
+end
+

cookbooks/network/recipes/vlan_support.rb

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+
+case node.platform
+when 'centos', 'redhat', 'fedora'
+  package 'vconfig'
+when 'ubuntu', 'debian'
+  package 'vlan'
+end
+

cookbooks/network/resources/interface.rb

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+require 'chef/mixin/language_include_recipe'
+
+include Chef::Mixin::LanguageIncludeRecipe
+
+actions :create, :delete, :up, :down
+
+attribute :device, :name_attribute => true, :kind_of => String, :required => true
+attribute :vlan, :kind_of => Integer
+
+attribute :address, :kind_of => String
+attribute :netmask
+
+attribute :mtu, :kind_of => Integer
+attribute :metric, :kind_of => Integer
+
+attribute :onboot, :default => true
+
+
+attr_accessor :state
+
+def initialize(*args)
+  super
+  @action = [:create, :up]
+end
+
+def up?
+  state == :up
+end
+
+def down?
+  state == :down
+end
+
+def device(arg=nil)
+  return @device if arg == nil && instance_variable_defined?(:@device)
+
+  # parse device from name
+  arg = $1 if /(.+)\.\d+/ =~ name
+
+  @device = validate({:device => (arg || name)}, :device => {:required => true, :kind_of => String})[:device]
+end
+
+def vlan(arg=nil)
+  return @vlan if arg == nil && instance_variable_defined?(:@vlan)
+
+  # parse vlan from name
+  arg ||= $1.to_i if /.+\.(\d+)/ =~ name
+
+  @vlan = validate({:vlan => (arg)}, :vlan => {:kind_of => Integer})[:vlan]
+end
+
+def after_created
+  include_recipe 'network::vlan_support' if vlan
+end
+

cookbooks/network/templates/default/ifcfg.erb

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+<% if @vlan %>
+VLAN=yes
+DEVICE=<%= @device %>.<%= @vlan %>
+<% else %>
+DEVICE=<%= @device %>
+<% end %>
+TYPE=Ethernet
+ONBOOT=<%= @onboot ? "yes" : "no" %>
+<% if @address %>
+BOOTPROTO=static
+IPADDR=<%= @address %>
+NETMASK=<%= @netmask %>
+<% else %>
+BOOTPROTO=dhcp
+<% end %>