65 lines
2.7 KiB
Ruby
65 lines
2.7 KiB
Ruby
require "set"
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require_relative "../../../../lib/vagrant/util/template_renderer"
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require_relative "../../../../lib/vagrant/util/tempfile"
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module VagrantPlugins
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module GuestDebian
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module Cap
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class ConfigureNetworks
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include Vagrant::Util
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def self.configure_networks(machine, networks)
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machine.communicate.tap do |comm|
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# First, remove any previous network modifications
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# from the interface file.
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comm.sudo("sed -e '/^#VAGRANT-BEGIN/,$ d' /etc/network/interfaces > /tmp/vagrant-network-interfaces.pre")
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comm.sudo("sed -ne '/^#VAGRANT-END/,$ p' /etc/network/interfaces | tac | sed -e '/^#VAGRANT-END/,$ d' | tac > /tmp/vagrant-network-interfaces.post")
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# Accumulate the configurations to add to the interfaces file as
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# well as what interfaces we're actually configuring since we use that
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# later.
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interfaces = Set.new
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entries = []
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networks.each do |network|
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interfaces.add(network[:interface])
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entry = TemplateRenderer.render("guests/debian/network_#{network[:type]}",
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options: network)
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entries << entry
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end
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# Perform the careful dance necessary to reconfigure the network
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# interfaces.
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Tempfile.create("debian-configure-networks") do |f|
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f.write(entries.join("\n"))
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f.fsync
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f.close
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comm.upload(f.path, "/tmp/vagrant-network-entry")
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end
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# Bring down all the interfaces we're reconfiguring. By bringing down
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# each specifically, we avoid reconfiguring eth0 (the NAT interface) so
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# SSH never dies.
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interfaces.each do |interface|
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# Ubuntu 16.04+ returns an error when downing an interface that
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# does not exist. The `|| true` preserves the behavior that older
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# Ubuntu versions exhibit and Vagrant expects (GH-7155)
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comm.sudo("/sbin/ifdown eth#{interface} 2> /dev/null || true")
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comm.sudo("/sbin/ip addr flush dev eth#{interface} 2> /dev/null")
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end
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comm.sudo('cat /tmp/vagrant-network-interfaces.pre /tmp/vagrant-network-entry /tmp/vagrant-network-interfaces.post > /etc/network/interfaces')
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comm.sudo('rm -f /tmp/vagrant-network-interfaces.pre /tmp/vagrant-network-entry /tmp/vagrant-network-interfaces.post')
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# Bring back up each network interface, reconfigured
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interfaces.each do |interface|
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comm.sudo("/sbin/ifup eth#{interface}")
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end
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end
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end
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end
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end
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end
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end
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