Class: VagrantPlugins::GuestDebian::Cap::ConfigureSoftwareBridges

Inherits:
Object
  • Object
show all
Includes:
Vagrant::Util
Defined in:
lib/vagrant-software-bridge/debian/configure_software_bridges.rb

Class Method Summary collapse

Class Method Details

.configure_software_bridges(machine, bridges) ⇒ Object

Heavily borrowed from VagrantPlugins::Debian::Cap::ConfigureNetworks.



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# File 'lib/vagrant-software-bridge/debian/configure_software_bridges.rb', line 13

def self.configure_software_bridges(machine, bridges)
  machine.communicate.tap do |comm|
    # First, remove any previous network modifications
    # from the interface file.
    comm.sudo("sed -e '/^#VAGRANT-BRIDGE-BEGIN/,/^#VAGRANT-BRIDGE-END/ d' /etc/network/interfaces > /tmp/vagrant-network-interfaces")
    comm.sudo("su -c 'cat /tmp/vagrant-network-interfaces > /etc/network/interfaces'")
    comm.sudo("rm /tmp/vagrant-network-interfaces")

    # Accumulate the configurations to add to the interfaces file as
    # well as what interfaces we're actually configuring since we use that
    # later.
    interfaces = Set.new
    entries = []
    bridges.each do |bridge|
      interfaces.add(bridge[:interface])
      entry = TemplateRenderer.render(File.join(File.dirname(__FILE__), "software_bridge"),
                                      :options => bridge)

      entries << entry
    end

    # Perform the careful dance necessary to reconfigure
    # the network interfaces
    temp = Tempfile.new("vagrant")
    temp.binmode
    temp.write(entries.join("\n"))
    temp.close

    comm.upload(temp.path, "/tmp/vagrant-network-entry")

    # Bring down all the interfaces we're reconfiguring. By bringing down
    # each specifically, we avoid reconfiguring eth0 (the NAT interface) so
    # SSH never dies.
    interfaces.each do |interface|
      comm.sudo("/sbin/ifdown #{interface} 2> /dev/null")
    end

    comm.sudo("cat /tmp/vagrant-network-entry >> /etc/network/interfaces")
    comm.sudo("rm /tmp/vagrant-network-entry")

    # Bring back up each network interface, reconfigured
    interfaces.each do |interface|
      comm.sudo("/sbin/ifup #{interface}")
    end
  end
end