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require 'resolv'
def ensure_period(s)
if s[-1] == '.'
s
else
"#{s}."
end
end
Facter.add(:dns_zone_serial) do
confine do
Facter::Util::Resolution.which('named-checkconf')
end
setcode do
dns = Resolv::DNS.new(nameserver: ['localhost'])
zones = `named-checkconf -l`
.split("\n")
.map { |line| line.split(' ') }
.filter { |zone| zone.last == 'master' }
zone_map = {}
zones.map do |zone|
z = ensure_period(zone[0])
zone_map[z] = dns.getresource(z, Resolv::DNS::Resource::IN::SOA).serial
end
zone_map
end
end
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