679ecaada0
Neutron's dns_assignments field includes a nice pice of
structured data. This is a prerequirement for Designate
usage. (No plan's to use that, but being a bit ready
does'nt hurt.)
{"hostname": "my-vm",
"ip_address": "192.0.2.16",
"fqdn": "my-vm.example.org."}
Enable for the undercloud:
- dns_domain_ports ml2 extension driver
Change-Id: I46eb9a24dd66821b27524fe4d1fdab617b6fa948
325 lines
12 KiB
Python
Executable File
325 lines
12 KiB
Python
Executable File
#!/usr/libexec/platform-python
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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 json
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import netaddr
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import openstack
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import os
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import subprocess
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CTLPLANE_NETWORK_NAME = 'ctlplane'
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CONF = json.loads(os.environ['config'])
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CLOUD_DOMAIN = 'ctlplane.' + (CONF['cloud_domain'] + '.'
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if not CONF['cloud_domain'].endswith('.')
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else CONF['cloud_domain'])
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def _run_command(args, env=None, name=None):
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"""Run the command defined by args and return its output
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:param args: List of arguments for the command to be run.
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:param env: Dict defining the environment variables. Pass None to use
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the current environment.
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:param name: User-friendly name for the command being run. A value of
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None will cause args[0] to be used.
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"""
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if name is None:
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name = args[0]
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if env is None:
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env = os.environ
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env = env.copy()
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# When running a localized python script, we need to tell it that we're
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# using utf-8 for stdout, otherwise it can't tell because of the pipe.
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env['PYTHONIOENCODING'] = 'utf8'
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try:
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return subprocess.check_output(args,
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stderr=subprocess.STDOUT,
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env=env).decode('utf-8')
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except subprocess.CalledProcessError as ex:
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print('ERROR: %s failed: %s' % (name, ex.output))
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raise
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def _ensure_neutron_network(sdk):
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try:
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network = list(sdk.network.networks(name=CTLPLANE_NETWORK_NAME))
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if not network:
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network = sdk.network.create_network(
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name=CTLPLANE_NETWORK_NAME,
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provider_network_type='flat',
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provider_physical_network=CONF['physical_network'],
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mtu=CONF['mtu'],
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dns_domain=CLOUD_DOMAIN)
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print('INFO: Network created %s' % network)
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else:
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network = sdk.network.update_network(
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network[0].id,
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name=CTLPLANE_NETWORK_NAME,
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mtu=CONF['mtu'],
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dns_domain=CLOUD_DOMAIN)
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print('INFO: Network updated %s' % network)
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except Exception:
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print('ERROR: Network create/update failed.')
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raise
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return network
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def _get_nameservers_for_version(servers, ipversion):
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"""Get list of nameservers for an IP version"""
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return [s for s in servers if netaddr.IPAddress(s).version == ipversion]
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def _neutron_subnet_create(sdk, network_id, cidr, gateway, host_routes,
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allocation_pools, name, segment_id,
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dns_nameservers):
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try:
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if netaddr.IPNetwork(cidr).version == 6:
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subnet = sdk.network.create_subnet(
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name=name,
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cidr=cidr,
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gateway_ip=gateway,
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enable_dhcp=True,
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ip_version='6',
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ipv6_address_mode=CONF['ipv6_address_mode'],
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ipv6_ra_mode=CONF['ipv6_address_mode'],
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allocation_pools=allocation_pools,
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network_id=network_id,
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segment_id=segment_id,
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dns_nameservers=_get_nameservers_for_version(dns_nameservers,
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6))
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else:
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subnet = sdk.network.create_subnet(
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name=name,
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cidr=cidr,
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gateway_ip=gateway,
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host_routes=host_routes,
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enable_dhcp=True,
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ip_version='4',
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allocation_pools=allocation_pools,
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network_id=network_id,
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segment_id=segment_id,
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dns_nameservers=_get_nameservers_for_version(dns_nameservers,
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4))
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print('INFO: Subnet created %s' % subnet)
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except Exception:
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print('ERROR: Create subnet %s failed.' % name)
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raise
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return subnet
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def _neutron_subnet_update(sdk, subnet_id, cidr, gateway, host_routes,
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allocation_pools, name, dns_nameservers):
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try:
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if netaddr.IPNetwork(cidr).version == 6:
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subnet = sdk.network.update_subnet(
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subnet_id,
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name=name,
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gateway_ip=gateway,
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allocation_pools=allocation_pools,
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dns_nameservers=_get_nameservers_for_version(dns_nameservers,
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6))
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else:
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subnet = sdk.network.update_subnet(
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subnet_id,
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name=name,
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gateway_ip=gateway,
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host_routes=host_routes,
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allocation_pools=allocation_pools,
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dns_nameservers=_get_nameservers_for_version(dns_nameservers,
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4))
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print('INFO: Subnet updated %s' % subnet)
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except Exception:
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print('ERROR: Update of subnet %s failed.' % name)
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raise
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def _neutron_add_subnet_segment_association(sdk, subnet_id, segment_id):
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try:
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subnet = sdk.network.update_subnet(subnet_id, segment_id=segment_id)
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print('INFO: Segment association added to Subnet %s' % subnet)
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except Exception:
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print('ERROR: Associationg segment with subnet %s failed.' % subnet_id)
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raise
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def _neutron_segment_create(sdk, name, network_id, phynet):
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try:
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segment = sdk.network.create_segment(
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name=name,
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network_id=network_id,
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physical_network=phynet,
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network_type='flat')
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print('INFO: Neutron Segment created %s' % segment)
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except Exception:
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print('ERROR: Neutron Segment %s create failed.' % name)
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raise
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return segment
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def _neutron_segment_update(sdk, segment_id, name):
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try:
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segment = sdk.network.update_segment(segment_id, name=name)
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print('INFO: Neutron Segment updated %s', segment)
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except Exception:
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print('ERROR: Neutron Segment %s update failed.' % name)
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raise
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def _ensure_neutron_router(sdk, name, subnet_id):
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# If the router already exist, don't try to create it again.
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if list(sdk.network.routers(name=name)):
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return
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try:
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router = sdk.network.create_router(name=name, admin_state_up='true')
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sdk.network.add_interface_to_router(router.id, subnet_id=subnet_id)
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except Exception:
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print('ERROR: Create router for subnet %s failed.' % name)
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raise
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def _get_subnet(sdk, cidr, network_id):
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try:
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subnet = list(sdk.network.subnets(cidr=cidr, network_id=network_id))
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except Exception:
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print('ERROR: Get subnet with cidr %s failed.' % cidr)
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raise
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return False if not subnet else subnet[0]
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def _get_segment(sdk, phy, network_id):
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try:
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segment = list(sdk.network.segments(physical_network=phy,
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network_id=network_id))
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except Exception:
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print('ERROR: Get segment for physical_network %s on network_id %s '
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'failed.' % (phy, network_id))
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raise
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return False if not segment else segment[0]
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def _set_network_tags(sdk, network, tags):
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try:
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sdk.network.set_tags(network, tags=tags)
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print('INFO: Tags %s added to network %s.' % (tags, network.name))
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except Exception:
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print('ERROR: Setting tags %s on network %s failed.' %
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(tags, network.name))
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raise
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def _local_neutron_segments_and_subnets(sdk, ctlplane_id, net_cidrs):
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"""Create's and updates the ctlplane subnet on the segment that is local to
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the underclud.
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"""
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s = CONF['subnets'][CONF['local_subnet']]
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name = CONF['local_subnet']
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subnet = _get_subnet(sdk, s['NetworkCidr'], ctlplane_id)
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segment = _get_segment(sdk, CONF['physical_network'], ctlplane_id)
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if subnet:
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if CONF['enable_routed_networks'] and subnet.segment_id is None:
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# The subnet exists and does not have a segment association. Since
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# routed networks is enabled in the configuration, we need to
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# migrate the existing non-routed networks subnet to a routed
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# networks subnet by associating the network segment_id with the
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# subnet.
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_neutron_add_subnet_segment_association(sdk, subnet.id, segment.id)
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_neutron_subnet_update(
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sdk, subnet.id, s['NetworkCidr'], s['NetworkGateway'],
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s['HostRoutes'], s.get('AllocationPools'), name,
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s['DnsNameServers'])
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else:
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if CONF['enable_routed_networks']:
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segment_id = segment.id
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else:
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segment_id = None
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subnet = _neutron_subnet_create(
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sdk, ctlplane_id, s['NetworkCidr'], s['NetworkGateway'],
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s['HostRoutes'], s.get('AllocationPools'), name, segment_id,
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s['DnsNameServers'])
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# If the subnet is IPv6 we need to start a router so that router
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# advertisments are sent out for stateless IP addressing to work.
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# NOTE(hjensas): Don't do this for routed networks. The router will
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# use the address defined as gateway for the subnet, and in a
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# deployment with routed networks this will conflict with the router
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# in the infrastructure. The router in the infrastucture must be
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# configured to send router advertisements.
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if not CONF['enable_routed_networks']:
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if netaddr.IPNetwork(s['NetworkCidr']).version == 6:
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_ensure_neutron_router(sdk, name, subnet.id)
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net_cidrs.append(s['NetworkCidr'])
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return net_cidrs
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def _remote_neutron_segments_and_subnets(sdk, ctlplane_id, net_cidrs):
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"""Create's and updates the ctlplane subnet(s) on segments that is
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not local to the undercloud.
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"""
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for name in CONF['subnets']:
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s = CONF['subnets'][name]
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if name == CONF['local_subnet']:
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continue
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phynet = name
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subnet = _get_subnet(sdk, s['NetworkCidr'], ctlplane_id)
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segment = _get_segment(sdk, phynet, ctlplane_id)
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if subnet:
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_neutron_segment_update(sdk, subnet.segment_id, name)
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_neutron_subnet_update(
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sdk, subnet.id, s['NetworkCidr'], s['NetworkGateway'],
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s['HostRoutes'], s.get('AllocationPools'), name,
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s['DnsNameServers'])
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else:
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if segment:
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_neutron_segment_update(sdk, segment.id, name)
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else:
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segment = _neutron_segment_create(sdk, name, ctlplane_id,
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phynet)
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subnet = _neutron_subnet_create(
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sdk, ctlplane_id, s['NetworkCidr'], s['NetworkGateway'],
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s['HostRoutes'], s.get('AllocationPools'), name, segment.id,
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s['DnsNameServers'])
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net_cidrs.append(s['NetworkCidr'])
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return net_cidrs
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if 'true' not in _run_command(['hiera', 'neutron_api_enabled'],
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name='hiera').lower():
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print('WARNING: UndercloudCtlplaneNetworkDeployment : The Neutron API '
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'is disabled. The ctlplane network cannot be configured.')
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else:
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sdk = openstack.connect(CONF['cloud_name'])
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network = _ensure_neutron_network(sdk)
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net_cidrs = []
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# Always create/update the local_subnet first to ensure it is can have the
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# subnet associated with a segment prior to creating the remote subnets if
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# the user enabled routed networks support on undercloud update.
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net_cidrs = _local_neutron_segments_and_subnets(sdk, network.id, net_cidrs)
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if CONF['enable_routed_networks']:
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net_cidrs = _remote_neutron_segments_and_subnets(sdk, network.id,
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net_cidrs)
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# Set the cidrs for all ctlplane subnets as tags on the ctlplane network.
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# These tags are used for the NetCidrMapValue in tripleo-heat-templates.
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_set_network_tags(sdk, network, net_cidrs)
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