Add NS1 backend
Introduce an NS1 backend. Signed-off-by: Michael Hood <mhood@ns1.com> Change-Id: I80fe08238005a94161e2dbcc89e77c90cde0a715
This commit is contained in:
Michael Hood
parent
75668d084c
commit
5aac48f08b
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# Copyright 2021 NS1 Inc. https://www.ns1.com
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#
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# Author: Dragan Blagojevic <dblagojevic@daitan.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import requests
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from oslo_config import cfg
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from oslo_log import log as logging
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from designate import exceptions
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from designate.backend import base
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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class NS1Backend(base.Backend):
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__plugin_name__ = 'ns1'
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__backend_status__ = 'untested'
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def __init__(self, target):
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super(NS1Backend, self).__init__(target)
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self.api_endpoint = "https://" + self.options.get('api_endpoint')
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self.api_token = self.options.get('api_token')
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self.tsigkey_name = self.options.get('tsigkey_name', None)
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self.tsigkey_hash = self.options.get('tsigkey_hash', None)
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self.tsigkey_value = self.options.get('tsigkey_value', None)
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self.headers = {
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"X-NSONE-Key": self.api_token
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}
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def _build_url(self, zone):
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return "%s/v1/zones/%s" % (self.api_endpoint, zone.name.rstrip('.'))
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def _get_master(self):
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try:
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return self.masters[0]
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except IndexError as e:
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LOG.error('No masters host set in pools.yaml')
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raise exceptions.Backend(e)
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def _check_zone_exists(self, zone):
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try:
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requests.get(
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self._build_url(zone),
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headers=self.headers
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).raise_for_status()
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except requests.HTTPError as e:
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if e.response.status_code == 404:
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return False
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else:
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LOG.error('HTTP error in check zone exists. Zone %s', zone)
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raise exceptions.Backend(e)
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except requests.ConnectionError as e:
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LOG.error('Connection error in check zone exists. Zone %s', zone)
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raise exceptions.Backend(e)
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return True
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def create_zone(self, context, zone):
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master = self._get_master()
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# designate requires "." at end of zone name, NS1 requires omitting
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data = {
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"zone": zone.name.rstrip('.'),
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"secondary": {
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"enabled": True,
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"primary_ip": master.host,
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"primary_port": master.port
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}
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}
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if self.tsigkey_name:
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tsig = {
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"enabled": True,
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"hash": self.tsigkey_hash,
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"name": self.tsigkey_name,
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"key": self.tsigkey_value
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}
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data['secondary']['tsig'] = tsig
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if not self._check_zone_exists(zone):
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try:
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requests.put(
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self._build_url(zone),
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json=data,
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headers=self.headers
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).raise_for_status()
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except requests.HTTPError as e:
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# check if the zone was actually created
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if self._check_zone_exists(zone):
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LOG.info("%s was created with an error. Deleting zone",
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zone.name)
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try:
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self.delete_zone(context, zone)
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except exceptions.Backend:
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LOG.error('Could not delete errored zone %s',
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zone.name)
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raise exceptions.Backend(e)
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else:
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LOG.info("Can't create zone %s because it already exists",
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zone.name)
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self.mdns_api.notify_zone_changed(
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context, zone, self.host, self.port, self.timeout,
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self.retry_interval, self.max_retries, self.delay)
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def delete_zone(self, context, zone):
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"""Delete a DNS zone"""
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# First verify that the zone exists
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if self._check_zone_exists(zone):
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try:
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requests.delete(
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self._build_url(zone),
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headers=self.headers
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).raise_for_status()
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except requests.HTTPError as e:
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raise exceptions.Backend(e)
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else:
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LOG.warning("Trying to delete zone %s but that zone is not "
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"present in the ns1 backend. Assuming success.",
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zone)
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@ -0,0 +1,217 @@
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# Copyright 2021 NS1 Inc. https://www.ns1.com
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#
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# Author: Dragan Blagojevic <dblagojevic@daitan.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import requests_mock
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from designate import exceptions
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from designate import objects
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from designate.backend import impl_ns1
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import designate.tests
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from designate.tests import fixtures
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class NS1BackendTestCase(designate.tests.TestCase):
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def setUp(self):
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super(NS1BackendTestCase, self).setUp()
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self.stdlog = fixtures.StandardLogging()
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self.useFixture(self.stdlog)
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self.api_address = 'https://192.0.2.3/v1/zones/example.com'
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self.context = self.get_context()
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self.zone = objects.Zone(
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id='e2bed4dc-9d01-11e4-89d3-123b93f75cba',
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name='example.com.',
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email='example@example.com',
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)
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self.target = {
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'id': '4588652b-50e7-46b9-b688-a9bad40a873e',
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'type': 'ns1',
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'masters': [
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{'host': '192.0.2.1', 'port': 53},
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{'host': '192.0.2.2', 'port': 35},
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],
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'options': [
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{'key': 'api_endpoint', 'value': '192.0.2.3'},
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{'key': 'api_token', 'value': 'test_key'},
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],
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}
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self.target_tsig = {
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'id': '4588652b-50e7-46b9-b688-a9bad40a873e',
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'type': 'ns1',
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'masters': [
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{'host': '192.0.2.1', 'port': 53},
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{'host': '192.0.2.2', 'port': 35},
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],
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'options': [
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{'key': 'api_endpoint', 'value': '192.0.2.3'},
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{'key': 'api_token', 'value': 'test_key'},
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{'key': 'tsigkey_name', 'value': 'test_key'},
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{'key': 'tsigkey_hash', 'value': 'hmac-sha512'},
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{'key': 'tsigkey_value', 'value': 'aaaabbbbccc'},
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],
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}
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self.put_request_json = {
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'zone': u'example.com',
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'secondary': {
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'enabled': True,
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'primary_ip': '192.0.2.1',
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'primary_port': 53
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}
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}
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self.put_request_tsig_json = {
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'zone': u'example.com',
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'secondary': {
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'enabled': True,
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'primary_ip': '192.0.2.1',
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'primary_port': 53,
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'tsig': {
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'enabled': True,
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'hash': 'hmac-sha512',
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'name': 'test_key',
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'key': 'aaaabbbbccc'
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}
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}
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}
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self.backend = impl_ns1.NS1Backend(
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objects.PoolTarget.from_dict(self.target)
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)
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self.backend_tsig = impl_ns1.NS1Backend(
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objects.PoolTarget.from_dict(self.target_tsig)
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)
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@requests_mock.mock()
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def test_create_zone_success(self, req_mock):
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req_mock.put(self.api_address)
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req_mock.get(
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self.api_address,
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status_code=404
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)
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self.backend.create_zone(self.context, self.zone)
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self.assertEqual(
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req_mock.last_request.json(),
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self.put_request_json
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)
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self.assertEqual(
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req_mock.last_request.headers.get('X-NSONE-Key'), 'test_key'
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)
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@requests_mock.mock()
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def test_create_zone_with_tsig_success(self, req_mock):
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req_mock.put(self.api_address)
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req_mock.get(
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self.api_address,
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status_code=404
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)
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self.backend_tsig.create_zone(self.context, self.zone)
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self.assertEqual(
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req_mock.last_request.json(),
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self.put_request_tsig_json
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)
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self.assertEqual(
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req_mock.last_request.headers.get('X-NSONE-Key'), 'test_key'
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)
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@requests_mock.mock()
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def test_create_zone_already_exists(self, req_mock):
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req_mock.get(self.api_address, status_code=200)
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req_mock.put(self.api_address)
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self.backend.create_zone(self.context, self.zone)
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self.assertIn(
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"Can't create zone example.com. because it already exists",
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self.stdlog.logger.output
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)
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self.assertEqual(
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req_mock.last_request.headers.get('X-NSONE-Key'), 'test_key'
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)
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@requests_mock.mock()
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def test_create_zone_fail(self, req_mock):
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req_mock.put(
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self.api_address,
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status_code=500,
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)
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req_mock.get(
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self.api_address,
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status_code=404,
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)
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self.assertRaisesRegexp(
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exceptions.Backend,
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'500 Server Error: None for url: '
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'%s' % self.api_address,
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self.backend.create_zone, self.context, self.zone
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)
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self.assertEqual(
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req_mock.last_request.headers.get('X-NSONE-Key'), 'test_key'
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)
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@requests_mock.mock()
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def test_delete_zone_success(self, req_mock):
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req_mock.delete(self.api_address, status_code=200)
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req_mock.get(self.api_address, status_code=200)
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self.backend.delete_zone(self.context, self.zone)
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self.assertEqual(
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req_mock.last_request.headers.get('X-NSONE-Key'), 'test_key'
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)
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@requests_mock.mock()
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def test_delete_zone_missing(self, req_mock):
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req_mock.delete(self.api_address, status_code=200)
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req_mock.get(self.api_address, status_code=404)
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self.backend.delete_zone(self.context, self.zone)
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self.assertIn(
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"Trying to delete zone "
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"<Zone id:'e2bed4dc-9d01-11e4-89d3-123b93f75cba' type:'None' "
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"name:'example.com.' pool_id:'None' serial:'None' action:'None' "
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"status:'None'> "
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"but that zone is not "
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"present in the ns1 backend. Assuming success.",
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self.stdlog.logger.output
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)
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self.assertEqual(
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req_mock.last_request.headers.get('X-NSONE-Key'), 'test_key'
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)
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@requests_mock.mock()
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def test_delete_zone_fail(self, req_mock):
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req_mock.delete(self.api_address, status_code=500)
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req_mock.get(self.api_address, status_code=200)
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self.assertRaisesRegexp(
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exceptions.Backend,
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'500 Server Error: None for url: '
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'%s' % self.api_address,
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self.backend.delete_zone, self.context, self.zone
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)
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self.assertEqual(
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req_mock.last_request.headers.get('X-NSONE-Key'), 'test_key'
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)
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@ -0,0 +1,107 @@
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# Configure the NS1 backend
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# Requirements:
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# A working NS1 managed DNS / DDI environment is needed to use this DevStack plugin.
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# Enable with:
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# DESIGNATE_BACKEND_DRIVER=ns1
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# Dependencies:
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# ``functions`` file
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# ``designate`` configuration
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# install_designate_backend - install any external requirements
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# configure_designate_backend - make configuration changes, including those to other services
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# init_designate_backend - initialize databases, etc.
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# start_designate_backend - start any external services
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# stop_designate_backend - stop any external services
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# cleanup_designate_backend - remove transient data and cache
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# Save trace setting
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DP_NS1_XTRACE=$(set +o | grep xtrace)
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set +o xtrace
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# Defaults
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# --------
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DESIGNATE_NS1_DNS_IP=${DESIGNATE_NS1_DNS_IP:-172.31.45.104}
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DESIGNATE_NS1_DNS_PORT=${DESIGNATE_NS1_DNS_PORT:-5333}
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DESIGNATE_NS1_XFR_IP=${DESIGNATE_NS1_XFR_IP:-172.31.45.104}
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DESIGNATE_NS1_XFR_PORT=${DESIGNATE_NS1_XFR_PORT:-5400}
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DESIGNATE_NS1_API_IP=${DESIGNATE_NS1_API_IP:-172.31.45.104}
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DESIGNATE_NS1_API_TOKEN=${DESIGNATE_NS1_API_TOKEN:-default}
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# Entry Points
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# ------------
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# install_designate_backend - install any external requirements
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function install_designate_backend {
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if is_ubuntu; then
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install_package python-dev libxslt1-dev libxslt1.1 libxml2-dev libxml2 libssl-dev
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elif is_fedora; then
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install_package python-devel libxslt1-devel libxslt1.1 libxml2-devel libxml2 libssl-devel
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fi
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}
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# configure_designate_backend - make configuration changes, including those to other services
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function configure_designate_backend {
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# Generate Designate pool.yaml file
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sudo tee $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
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---
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- name: default
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description: DevStack NS1 Pool
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attributes: {}
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ns_records:
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- hostname: $DESIGNATE_DEFAULT_NS_RECORD
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priority: 1
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nameservers:
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- host: $DESIGNATE_NS1_DNS_IP
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port: $DESIGNATE_NS1_DNS_PORT
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targets:
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- type: ns1
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description: NS1 Managed DNS
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masters:
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- host: $(ipv6_unquote $DESIGNATE_SERVICE_HOST)
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port: $DESIGNATE_SERVICE_PORT_MDNS
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options:
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host: $DESIGNATE_NS1_XFR_IP
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port: $DESIGNATE_NS1_XFR_PORT
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api_endpoint: $DESIGNATE_NS1_API_IP
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api_token: $DESIGNATE_NS1_API_TOKEN
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# NOTE: TSIG key has to be set manually if it's necessary
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#tsigkey_name: testkey
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#tsigkey_hash: hmac-sha512
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#tsigkey_value: 4EJz00m4ZWe005HjLiXRedJbSnCUx5Dt+4wVYsBweG5HKAV6cqSVJ/oem/6mLgDNFAlLP3Jg0npbg1SkP7RMDg==
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EOF
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}
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# init_designate_backend - initialize databases, etc.
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function init_designate_backend {
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:
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}
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# start_designate_backend - start any external services
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function start_designate_backend {
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:
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}
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# stop_designate_backend - stop any external services
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function stop_designate_backend {
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:
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}
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# cleanup_designate_backend - remove transient data and cache
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function cleanup_designate_backend {
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:
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}
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# Restore xtrace
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$DP_NS1_XTRACE
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@ -0,0 +1,66 @@
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..
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Copyright 2021 NS1 inc. https://www.ns1.com
|
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|
||||
Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||||
not use this file except in compliance with the License. You may obtain
|
||||
a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
License for the specific language governing permissions and limitations
|
||||
under the License.
|
||||
|
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.. _backend-ns1:
|
||||
|
||||
NS1 Backend
|
||||
===========
|
||||
|
||||
NS1 Configuration
|
||||
-----------------
|
||||
|
||||
|
||||
1. Configure the NS1 Backend using this sample target snippet
|
||||
|
||||
.. literalinclude:: sample_yaml_snippets/ns1.yaml
|
||||
:language: yaml
|
||||
|
||||
2. Then update the pools in designate
|
||||
|
||||
.. code-block:: console
|
||||
|
||||
$ designate-manage pool update
|
||||
|
||||
See :ref:`designate_manage_pool` for further details on
|
||||
the ``designate-manage pool`` command, and :ref:`pools`
|
||||
for information about the yaml file syntax
|
||||
|
||||
|
||||
TSIG Key Configuration
|
||||
----------------------
|
||||
|
||||
In some cases a deployer may need to use tsig keys to sign AXFR (zone transfer)
|
||||
requests. As NS1 does not support a per host key setup, this needs to be set
|
||||
on a per zone basis, on creation.
|
||||
|
||||
To do this, generate a tsigkey using any of available utilities
|
||||
(e.g. tsig-keygen):
|
||||
|
||||
.. code-block:: bash
|
||||
|
||||
$ tsig-keygen -a hmac-sha512 testkey
|
||||
key "testkey" {
|
||||
algorithm hmac-sha512;
|
||||
secret "vQbMI3u5QGUyRu6FWRm16eL0F0dfOOmVJjWKCTg4mIMNnba0g2PLrV+0G92WcTfJrgqZ20a4hv3RWDICKCcJhw==";
|
||||
};
|
||||
|
||||
Then insert it into Designate. Make sure the pool id is correct
|
||||
(the ``--resource-id`` below.)
|
||||
|
||||
.. code-block:: bash
|
||||
|
||||
openstack tsigkey create --name testkey --algorithm hmac-sha512 --secret 4EJz00m4ZWe005HjLiXRedJbSnCUx5Dt+4wVYsBweG5HKAV6cqSVJ/oem/6mLgDNFAlLP3Jg0npbg1SkP7RMDg== --scope POOL --resource-id 794ccc2c-d751-44fe-b57f-8894c9f5c842
|
||||
|
||||
Then add it to the ``pools.yaml`` file as shown in the example.
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
targets:
|
||||
- type: ns1
|
||||
description: NS1 DNS Server
|
||||
|
||||
# List out the designate-mdns servers from which NS1 servers should
|
||||
# request zone transfers (AXFRs) from.
|
||||
masters:
|
||||
- host: 192.0.2.1
|
||||
port: 5354
|
||||
|
||||
# NS1 Configuration options
|
||||
options:
|
||||
#NS1 XFR container ip and port
|
||||
host: 192.0.2.2
|
||||
port: 5302
|
||||
#NS1 API enpoint IP address or name (Core container). Enter only base address or name.
|
||||
#Plugin will generate full api address, e.g. https://192.0.2.2/v1/zones/<zone name>
|
||||
api_endpoint: 192.0.2.2
|
||||
#NS1 API key
|
||||
api_token: changeme
|
||||
# If a tsigkey is needed, uncomment the line below and insert the key name, algorithm and value
|
||||
# NOTE: TSIG key has to be set manually
|
||||
#tsigkey_name: testkey
|
||||
#tsigkey_hash: hmac-sha512
|
||||
#tsigkey_value: 4EJz00m4ZWe005HjLiXRedJbSnCUx5Dt+4wVYsBweG5HKAV6cqSVJ/oem/6mLgDNFAlLP3Jg0npbg1SkP7RMDg==
|
||||
|
|
@ -52,6 +52,7 @@ backend-impl-akamai=Akamai eDNS
|
|||
backend-impl-akamai_v2=Akamai DNS v2
|
||||
backend-impl-infoblox-xfr=Infoblox (XFR)
|
||||
backend-impl-nsd4=NSD4
|
||||
backend-impl-ns1=NS1 DNS
|
||||
backend-impl-agent=Agent
|
||||
backend-impl-bind9-agent=Bind9 (Agent)
|
||||
backend-impl-denominator=Denominator
|
||||
|
|
@ -80,6 +81,11 @@ notes=Akamai has turned off the eDNS API - see https://community.akamai.com/cust
|
|||
[backends.backend-impl-akamai_v2]
|
||||
docs=akamai_v2_backend_docs
|
||||
|
||||
[backends.backend-impl-ns1]
|
||||
docs=ns1_backend_docs
|
||||
status=untested
|
||||
config=backends/sample_yaml_snippets/ns1.yaml
|
||||
|
||||
[backends.backend-impl-agent]
|
||||
|
||||
[backends.backend-impl-bind9-agent]
|
||||
|
|
|
|||
|
|
@ -80,6 +80,7 @@ designate.backend =
|
|||
infoblox = designate.backend.impl_infoblox:InfobloxBackend
|
||||
fake = designate.backend.impl_fake:FakeBackend
|
||||
agent = designate.backend.agent:AgentPoolBackend
|
||||
ns1 = designate.backend.impl_ns1:NS1Backend
|
||||
|
||||
designate.backend.agent_backend =
|
||||
bind9 = designate.backend.agent_backend.impl_bind9:Bind9Backend
|
||||
|
|
|
|||
Loading…
Reference in New Issue