home.router: let dyndns have ipv6 please
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12E3D2136B818350
6 changed files with 100 additions and 76 deletions
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@ -1,20 +0,0 @@
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#!/bin/bash
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[[ -n "$DEBUG" ]] && set -x
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interface="$(ip link show | awk '/ ppp/ {print substr($2, 1, length($2)-1)}')"
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addr="$(ip addr show dev "$interface" | awk '/inet / {print $2}')"
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resolved="$(dig +short "${domain}" A)"
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if [[ -z "$addr" ]] || [[ -z "$resolved" ]]
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then
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echo "Address on '$interface' is '$addr' - resolved '$resolved'"
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exit 3
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elif [[ "$addr" == "$resolved" ]]
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then
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echo "Resolved IP for ${domain} matches current ip on $interface"
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exit 0
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else
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echo "Resolved $resolved for ${domain}, but got $addr on $interface!"
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exit 2
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fi
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@ -1,24 +1,59 @@
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#!/usr/bin/env python3
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from sys import argv
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import logging
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from ipaddress import ip_address
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from json import loads
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from subprocess import check_output
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import requests
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from requests import get
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INTERFACE = argv[1]
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LOCAL_IP = argv[4]
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UPDATE_URL = '${url}'
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USERNAME = '${username}'
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PASSWORD = '${password}'
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r = requests.get(
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UPDATE_URL.format(
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ip=LOCAL_IP,
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),
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auth=(
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USERNAME,
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PASSWORD,
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)
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)
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# <%text>
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logging.basicConfig(level=logging.INFO)
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LOG = logging.getLogger('DynDNS')
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try:
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ips = set()
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print('got status {} when updating dns'.format(r.status_code))
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iproute = loads(check_output(['ip', '-json', 'address', 'show', 'scope', 'global']))
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for iface in iproute:
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if not iface['ifname'].startswith('ppp'):
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LOG.debug(f'ignoring {iface["ifname"]}')
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continue
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LOG.info(f'working on {iface["ifname"]}')
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for ip in iface['addr_info']:
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try:
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addr = ip_address(ip['local'])
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LOG.info(f'{iface["ifname"]} has ip {addr.compressed}')
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ips.add(addr.compressed)
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except Exception:
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continue
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if ips:
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LOG.info('got some addresses!')
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break
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url = UPDATE_URL.format(
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ips=','.join(sorted(ips))
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)
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LOG.info(url)
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r = get(
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url,
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auth=(
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USERNAME,
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PASSWORD,
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),
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)
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r.raise_for_status()
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except Exception as e:
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logging.exception(e)
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# </%text>
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@ -1,17 +1,52 @@
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#!/bin/bash
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#!/usr/bin/env python3
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[[ -n "$DEBUG" ]] && set -x
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import logging
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from ipaddress import ip_address
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from json import loads
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from subprocess import check_output, run
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interface="$(ip link show | awk '/ ppp/ {print substr($2, 1, length($2)-1)}')"
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addr="$(ip addr show dev "$interface" | awk '/inet / {print $2}')"
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resolved="$(dig +short "${domain}" A)"
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if [[ -z "$addr" ]] || [[ -z "$resolved" ]]
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then
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echo "Something is wrong:"
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echo "Address on '$interface' is '$addr'"
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echo "Resolved DNS is '$resolved'"
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elif [[ "$addr" != "$resolved" ]]
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then
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/etc/ppp/ip-up.d/dyndns "$interface" "doesnt" "matter" "$addr"
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fi
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DOMAIN = '${domain}'
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# <%text>
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logging.basicConfig(level=logging.INFO)
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LOG = logging.getLogger('DynDNS checker')
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try:
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iproute = loads(check_output(['ip', '-json', 'address', 'show', 'scope', 'global']))
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resolved_ipv4 = check_output(['dig', '+short', DOMAIN, 'A']).decode().strip()
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resolved_ipv6 = check_output(['dig', '+short', DOMAIN, 'AAAA']).decode().strip()
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LOG.info(f'resolved ipv4 is "{resolved_ipv4}"')
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LOG.info(f'resolved ipv6 is "{resolved_ipv6}"')
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needs_changing = False
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for iface in iproute:
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if not iface['ifname'].startswith('ppp'):
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LOG.debug(f'ignoring {iface["ifname"]}')
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continue
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LOG.info(f'working on {iface["ifname"]}')
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for ip in iface['addr_info']:
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try:
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addr = ip_address(ip['local'])
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LOG.info(f'{iface["ifname"]} has ip {addr.compressed}')
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if (
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(addr.version == 4 and addr.compressed != resolved_ipv4)
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or (addr.version == 6 and addr.compressed != resolved_ipv6)
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):
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needs_changing = True
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except Exception:
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continue
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if needs_changing:
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LOG.warning('addresses have changed, calling update script!')
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run(['/etc/ppp/ip-up.d/dyndns'])
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else:
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LOG.info('everything is fine')
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except Exception as e:
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logging.exception(e)
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# </%text>
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@ -110,11 +110,6 @@ if node.metadata.get('pppd/dyndns', {}):
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'context': node.metadata.get('pppd/dyndns'),
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'mode': '0755',
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}
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files['/usr/local/share/icinga/plugins/check_dyndns_update'] = {
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'content_type': 'mako',
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'context': node.metadata.get('pppd/dyndns'),
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'mode': '0755',
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}
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files['/usr/local/bin/dyndns_periodic'] = {
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'content_type': 'mako',
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'context': node.metadata.get('pppd/dyndns'),
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@ -39,24 +39,3 @@ def ignore_interface(metadata):
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},
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},
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}
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@metadata_reactor.provides(
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'icinga2_api/pppd/services',
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)
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def icinga_dyndns(metadata):
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if not metadata.get('pppd/dyndns', {}):
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return {}
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return {
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'icinga2_api': {
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'pppd': {
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'services': {
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'DYNDNS UPDATE': {
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'command_on_monitored_host': '/usr/local/share/icinga/plugins/check_dyndns_update',
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'vars.notification.mail': True,
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},
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},
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},
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},
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}
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@ -1,5 +1,5 @@
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nodes['home.router'] = {
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'hostname': 'router-remote',
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'hostname': '172.19.138.1',
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'bundles': {
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'bird',
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'kea-dhcp-server',
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@ -118,7 +118,7 @@ nodes['home.router'] = {
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'interface': 'enp1s0.7',
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'dyndns': {
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'domain': 'franzi-home.kunbox.net',
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'url': 'https://ns-mephisto.kunbox.net/nic/update?hostname=franzi-home.kunbox.net&myip={ip}',
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'url': 'https://ns-mephisto.kunbox.net/nic/update?hostname=franzi-home.kunbox.net&myip={ips}',
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'username': vault.decrypt('encrypt$gAAAAABfr8DLAJhmUIhdxLq83I8MnRRvkRgDZcO8Brvw1KpvplC3K8ZGj0jIIWD3Us33vIP6t0ybd_mgD8slpRUk78Kqd3BMoQ=='),
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'password': vault.decrypt('encrypt$gAAAAABfr8Cq5M1hweeJTQAl0dLhFntdlw-QnkIYUQpY-_ycODVWOpyeAwjwOgWLSdsdXIUvqcoiXPZPV-BE12p5C42NGnj9r7sKYpoGz8xfuGIk6haMa2g='),
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},
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