0505771481
Ubuntu versions prior to 16.04 always returned a successful exit status, even if one tried to down an interface that does not exist. This behavior changed in Ubuntu 16.04 to return an error. This commit preserves the old behavior. Fixes GH-7155
65 lines
2.6 KiB
Ruby
65 lines
2.6 KiB
Ruby
require 'set'
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require 'tempfile'
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require "vagrant/util/template_renderer"
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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
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# the network interfaces
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temp = Tempfile.new("vagrant")
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temp.binmode
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temp.write(entries.join("\n"))
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temp.close
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comm.upload(temp.path, "/tmp/vagrant-network-entry")
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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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