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hetzner rdns: filter ipv6 addresses not in the current zone

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This commit is contained in:
Jörg Thalheim 2015-01-30 09:18:44 +00:00
parent cae4cf542f
commit 51aff603ff
3 changed files with 36 additions and 22 deletions
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4
container.json
View File

@ -38,7 +38,6 @@
"lxc": false
},
"jabber": {
"ipv4": "192.168.66.22/32",
"ipv6": "2a01:4f8:210:31fd:1::16/128",
"rdns6": "jabber.higgsboson.tk",
"lxc": false
@ -69,6 +68,7 @@
"ns1": {
"ns": true,
"lxc": false,
"rdns6": "ns1.higgsboson.tk",
"ipv4": "192.168.66.6/32",
"ipv6": "2a01:4f8:210:31fd:1::6/128"
},
@ -81,7 +81,7 @@
"dns": {
"ipv4": "192.168.66.6/32",
"ipv6": "2a01:4f8:210:31fd:1::6/128",
"rdns6": "ns.higgsboson.tk",
"rdns6": "ns1.higgsboson.tk",
"dn42": {
"ipv4": "172.23.75.4"
}

6
hooks/lib/lxc/hetzner.rb
View File

@ -41,15 +41,13 @@ module Lxc
def perform_request(req)
req.basic_auth(@user, @password)
resp = Net::HTTP.start(BASE_URI.hostname,
BASE_URI.port,
use_ssl: true) do |http|
resp = Net::HTTP.start(BASE_URI.hostname, BASE_URI.port, use_ssl: true) do |http|
http.request(req)
end
if resp.code.start_with? "2"
return resp
else
raise StandardError.new("failed to perform request: #{resp.inspect}")
raise StandardError.new("failed to perform request for '#{req.path}': #{resp.code} - #{resp.body}")
end
end
end

36
hooks/update-hetzner-rdns
View File

@ -1,35 +1,51 @@
#!/usr/bin/env ruby
require "netaddr"
require "set"
require_relative "lib/lxc"
def update_hetzner_rdns6(user, password, domain, network)
def update_hetzner_rdns6(user, password, domain, subnet, network)
api = Lxc::Hetzner.new(user, password)
rdns = api.get("/rdns")
records = {}
rdns.each do |val|
rec = val["rdns"]
cidr = NetAddr::CIDR.create(rec["ip"])
next if cidr.version == 4
records[cidr.ip] = rec["ptr"]
next unless cidr.version == 6 and subnet.contains?(rec["ip"])
records[rec["ip"]] = rec["ptr"]
end
processed_ips = Set.new
network.each do |host, data|
cidr = data["ipv6"]
next if cidr.nil?
ipv6 = NetAddr::CIDR.create(cidr).ip
cidr = NetAddr::CIDR.create(cidr)
next unless cidr.version == 6 and subnet.contains?(data["ipv6"])
hostname = data["rdns6"] || "#{host}.#{domain}"
ptr = records.delete(ipv6)
ip = cidr.ip(Short: true)
next if processed_ips.include?(ip)
processed_ips << ip
ptr = records.delete(ip)
if ptr.nil? or ptr != hostname
api.post("/rdns/#{ipv6}", ptr: hostname)
puts "add ptr: #{ip} -> #{hostname}"
api.post("/rdns/#{ip}", ptr: hostname)
end
end
records.each do |ip, ptr|
puts "delete ptr: #{ip} -> #{ptr}"
api.delete("/rnds/#{ip}")
end
end
credentials = File.read(Lxc::CONFIG_ROOT.join("hetzner.key"))
user, password = credentials.split(":")
registry = Lxc::Registry.new
registry.data["zone"] ||= {}
domain = registry.data["zone"]["domain"]
update_hetzner_rdns6(user, password, domain, registry.data["network"] || {})
domain = registry.data["zone"]["domain"] || "lxc"
subnet = registry.data["zone"]["v6_subnet"]
if subnet
subnet_cidr = NetAddr::CIDR.create(subnet)
credentials = File.read(Lxc::CONFIG_ROOT.join("hetzner.key"))
user, password = credentials.split(":")
network = registry.data["network"] || {}
update_hetzner_rdns6(user, password, domain, subnet_cidr, network)
else
puts "no v6_subnet specified in container.json. skip rdns records"
end