diff options
Diffstat (limited to 'cloudinit')
| -rw-r--r-- | cloudinit/net/network_state.py | 66 | ||||
| -rw-r--r-- | cloudinit/net/tests/test_network_state.py | 103 |
2 files changed, 154 insertions, 15 deletions
diff --git a/cloudinit/net/network_state.py b/cloudinit/net/network_state.py index e8bf9e39..8018cfb9 100644 --- a/cloudinit/net/network_state.py +++ b/cloudinit/net/network_state.py @@ -237,6 +237,7 @@ class NetworkStateInterpreter(metaclass=CommandHandlerMeta): self._network_state = copy.deepcopy(self.initial_network_state) self._network_state['config'] = config self._parsed = False + self._interface_dns_map = {} @property def network_state(self): @@ -310,6 +311,21 @@ class NetworkStateInterpreter(metaclass=CommandHandlerMeta): LOG.warning("Skipping invalid command: %s", command, exc_info=True) LOG.debug(self.dump_network_state()) + for interface, dns in self._interface_dns_map.items(): + iface = None + try: + iface = self._network_state['interfaces'][interface] + except KeyError as e: + raise ValueError( + 'Nameserver specified for interface {0}, ' + 'but interface {0} does not exist!'.format(interface) + ) from e + if iface: + nameservers, search = dns + iface['dns'] = { + 'addresses': nameservers, + 'search': search, + } def parse_config_v2(self, skip_broken=True): for command_type, command in self._config.items(): @@ -526,21 +542,40 @@ class NetworkStateInterpreter(metaclass=CommandHandlerMeta): def handle_infiniband(self, command): self.handle_physical(command) - @ensure_command_keys(['address']) - def handle_nameserver(self, command): - dns = self._network_state.get('dns') + def _parse_dns(self, command): + nameservers = [] + search = [] if 'address' in command: addrs = command['address'] if not type(addrs) == list: addrs = [addrs] for addr in addrs: - dns['nameservers'].append(addr) + nameservers.append(addr) if 'search' in command: paths = command['search'] if not isinstance(paths, list): paths = [paths] for path in paths: - dns['search'].append(path) + search.append(path) + return nameservers, search + + @ensure_command_keys(['address']) + def handle_nameserver(self, command): + dns = self._network_state.get('dns') + nameservers, search = self._parse_dns(command) + if 'interface' in command: + self._interface_dns_map[command['interface']] = ( + nameservers, search + ) + else: + dns['nameservers'].extend(nameservers) + dns['search'].extend(search) + + @ensure_command_keys(['address']) + def _handle_individual_nameserver(self, command, iface): + _iface = self._network_state.get('interfaces') + nameservers, search = self._parse_dns(command) + _iface[iface]['dns'] = {'nameservers': nameservers, 'search': search} @ensure_command_keys(['destination']) def handle_route(self, command): @@ -706,16 +741,17 @@ class NetworkStateInterpreter(metaclass=CommandHandlerMeta): def _v2_common(self, cfg): LOG.debug('v2_common: handling config:\n%s', cfg) - if 'nameservers' in cfg: - search = cfg.get('nameservers').get('search', []) - dns = cfg.get('nameservers').get('addresses', []) - name_cmd = {'type': 'nameserver'} - if len(search) > 0: - name_cmd.update({'search': search}) - if len(dns) > 0: - name_cmd.update({'addresses': dns}) - LOG.debug('v2(nameserver) -> v1(nameserver):\n%s', name_cmd) - self.handle_nameserver(name_cmd) + for iface, dev_cfg in cfg.items(): + if 'nameservers' in dev_cfg: + search = dev_cfg.get('nameservers').get('search', []) + dns = dev_cfg.get('nameservers').get('addresses', []) + name_cmd = {'type': 'nameserver'} + if len(search) > 0: + name_cmd.update({'search': search}) + if len(dns) > 0: + name_cmd.update({'address': dns}) + self.handle_nameserver(name_cmd) + self._handle_individual_nameserver(name_cmd, iface) def _handle_bond_bridge(self, command, cmd_type=None): """Common handler for bond and bridge types""" diff --git a/cloudinit/net/tests/test_network_state.py b/cloudinit/net/tests/test_network_state.py index 07d726e2..fc4724a1 100644 --- a/cloudinit/net/tests/test_network_state.py +++ b/cloudinit/net/tests/test_network_state.py @@ -2,12 +2,62 @@ from unittest import mock +import pytest + +from cloudinit import safeyaml from cloudinit.net import network_state from cloudinit.tests.helpers import CiTestCase netstate_path = 'cloudinit.net.network_state' +_V1_CONFIG_NAMESERVERS = """\ +network: + version: 1 + config: + - type: nameserver + interface: {iface} + address: + - 192.168.1.1 + - 8.8.8.8 + search: + - spam.local + - type: nameserver + address: + - 192.168.1.0 + - 4.4.4.4 + search: + - eggs.local + - type: physical + name: eth0 + mac_address: '00:11:22:33:44:55' + - type: physical + name: eth1 + mac_address: '66:77:88:99:00:11' +""" + +V1_CONFIG_NAMESERVERS_VALID = _V1_CONFIG_NAMESERVERS.format(iface='eth1') +V1_CONFIG_NAMESERVERS_INVALID = _V1_CONFIG_NAMESERVERS.format(iface='eth90') + +V2_CONFIG_NAMESERVERS = """\ +network: + version: 2 + ethernets: + eth0: + match: + macaddress: '00:11:22:33:44:55' + nameservers: + search: [spam.local, eggs.local] + addresses: [8.8.8.8] + eth1: + match: + macaddress: '66:77:88:99:00:11' + nameservers: + search: [foo.local, bar.local] + addresses: [4.4.4.4] +""" + + class TestNetworkStateParseConfig(CiTestCase): def setUp(self): @@ -55,4 +105,57 @@ class TestNetworkStateParseConfigV2(CiTestCase): self.assertEqual(ncfg, nsi.as_dict()['config']) +class TestNetworkStateParseNameservers: + def _parse_network_state_from_config(self, config): + yaml = safeyaml.load(config) + return network_state.parse_net_config_data(yaml['network']) + + def test_v1_nameservers_valid(self): + config = self._parse_network_state_from_config( + V1_CONFIG_NAMESERVERS_VALID) + + # If an interface was specified, DNS shouldn't be in the global list + assert ['192.168.1.0', '4.4.4.4'] == sorted( + config.dns_nameservers) + assert ['eggs.local'] == config.dns_searchdomains + + # If an interface was specified, DNS should be part of the interface + for iface in config.iter_interfaces(): + if iface['name'] == 'eth1': + assert iface['dns']['addresses'] == ['192.168.1.1', '8.8.8.8'] + assert iface['dns']['search'] == ['spam.local'] + else: + assert 'dns' not in iface + + def test_v1_nameservers_invalid(self): + with pytest.raises(ValueError): + self._parse_network_state_from_config( + V1_CONFIG_NAMESERVERS_INVALID) + + def test_v2_nameservers(self): + config = self._parse_network_state_from_config(V2_CONFIG_NAMESERVERS) + + # Ensure DNS defined on interface exists on interface + for iface in config.iter_interfaces(): + if iface['name'] == 'eth0': + assert iface['dns'] == { + 'nameservers': ['8.8.8.8'], + 'search': ['spam.local', 'eggs.local'], + } + else: + assert iface['dns'] == { + 'nameservers': ['4.4.4.4'], + 'search': ['foo.local', 'bar.local'] + } + + # Ensure DNS defined on interface also exists globally (since there + # is no global DNS definitions in v2) + assert ['4.4.4.4', '8.8.8.8'] == sorted(config.dns_nameservers) + assert [ + 'bar.local', + 'eggs.local', + 'foo.local', + 'spam.local', + ] == sorted(config.dns_searchdomains) + # vi: ts=4 expandtab |