52 lines
1.4 KiB
Plaintext
52 lines
1.4 KiB
Plaintext
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#!/usr/bin/env ruby
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require "resolv"
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require_relative "lib/lxc"
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class Resolver
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def initialize
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@stub_resolver = Resolv::DNS.new
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@cache = {}
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end
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def resolve(name, delegated_subdomain, typeclass)
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if name == "@"
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fqdn = delegated_subdomain
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else
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fqdn = "#{name}.#{delegated_subdomain}"
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end
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result = @cache[fqdn + typeclass.to_s] ||= @stub_resolver.getresource(fqdn, typeclass)
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if result == :no_record
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nil
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else
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result
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end
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rescue Resolv::ResolvError => e
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puts "warning: #{e}"
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@cache[fqdn + typeclass.to_s] = :no_record
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return nil
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end
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def a(name, delegated_subdomain)
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result = resolve(name, delegated_subdomain, Resolv::DNS::Resource::IN::A)
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return "" unless result
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"#{name} A #{result.address.to_s}\n"
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end
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def aaaa(name, delegated_subdomain)
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result = resolve(name, delegated_subdomain, Resolv::DNS::Resource::IN::AAAA)
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return "" unless result
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"#{name} AAAA #{result.address.to_s}\n"
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end
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end
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template_path = Lxc::CONFIG_ROOT.join("templates/higgsboson.tk.zone.erb")
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template = Lxc::Template.new(template_path)
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serial = Time.new.to_i
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resolver = Resolver.new
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zones = [
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["zones/higgsboson.tk.zone", :pub],
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["zones/internal-eve.higgsboson.tk.zone", :eve],
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["zones/internal-eva.higgsboson.tk.zone", :eva],
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]
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zones.each do |zone, type|
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template.write(zone, resolver: resolver, serial: serial, type: type)
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end
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Lxc::Utils.sh("lxc-attach", "-n", "dns", "--", "rndc", "reload")
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