Reviewed: https://review.opendev.org/c/openstack/neutron/+/926497
Committed:
https://opendev.org/openstack/neutron/commit/40657fab6302f4625e4c3d52481e1801080b649d
Submitter: "Zuul (22348)"
Branch: master
commit 40657fab6302f4625e4c3d52481e1801080b649d
Author: Brian Haley <haleyb....@gmail.com>
Date: Sat Aug 17 19:28:03 2024 -0400
Optionally configure IPv6 metadata address
If there is a network without an IPv6 subnet, the
dhcp-agent does not need to configure an IPv6 metadata
address. There is the possibility this could cause a
failure if one of the IPv4 subnets has a small mtu (<1280).
Re-arranged code slightly to only loop through the
subnets a single time doing multiple checks at once.
Similarly, the OVN metadata agent should only configure
IPv6 addresses if there is an IPv6 subnet present, and
remove any IPv6 addresses if they are removed. It should
also only listen in the IPv6 metadata address if IPv6 is
enabled, same as the dhcp-agent does.
Had to change a number of OVN metadata tests to account
for cases where IPv6 is/is not enabled and IPv6 subnets
are/are not present.
Closes-bug: #2074207
Change-Id: Ib332c357bc1c330cd7c2645b9fbbf5bdbdeb899f
** Changed in: neutron
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/2074207
Title:
DHCP agent makes endless attempts to configure a network with MTU <
1280
Status in neutron:
Fix Released
Bug description:
I get endless attempts to configure the network in the neutron-dhcp-
agent logs.
Conditions
- devstack setup with extra `force_metadata = true` config option.
- DHCP enabled vxlan network with MTU=1000
$ openstack network create net1000 --mtu 1000
$ openstack subnet create sub1 --network net1000 --dhcp --subnet-range
10.20.30.0/24
Jul 26 09:38:35 devoct30 neutron-dhcp-agent[1690530]: INFO
neutron.agent.dhcp.agent [None req-dfc13386-aaed-48e3-80b5-ebad6f324f3a None
None] Synchronizing state
Jul 26 09:38:35 devoct30 neutron-dhcp-agent[1690530]: INFO
oslo_messaging._drivers.amqpdriver [None
req-2caf8aeb-fbf0-457f-ac27-35d9aa75db90 None None] Expecting reply to msg
57ad6fa408c5444aa5b56be27020ccce in queue reply_081c0528a7b5431897eb5e8a5e4a7919
Jul 26 09:38:35 devoct30 neutron-dhcp-agent[1690530]: INFO
oslo_messaging._drivers.amqpdriver [-] Received RPC response for msg
57ad6fa408c5444aa5b56be27020ccce
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: INFO
neutron.agent.dhcp.agent [None req-2caf8aeb-fbf0-457f-ac27-35d9aa75db90 None
None] All active networks have been fetched through RPC.
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: INFO
neutron.agent.dhcp.agent [-] Starting network
e5e3d4ff-f552-4864-aafc-5ed022616467 dhcp configuration
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent [-] Unable to enable dhcp for
e5e3d4ff-f552-4864-aafc-5ed022616467.:
neutron.privileged.agent.linux.ip_lib.InvalidArgument: Invalid parameter/value
used on interface tapb8ae86a5-ca, namespace
qdhcp-e5e3d4ff-f552-4864-aafc-5ed022616467.
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent Traceback (most recent call last):
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/opt/stack/neutron/neutron/agent/dhcp/agent.py", line 265, in _call_driver
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent rv = getattr(driver, action)(**action_kwargs)
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 331, in enable
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent common_utils.wait_until_true(self._enable,
timeout=300)
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File "/opt/stack/neutron/neutron/common/utils.py",
line 739, in wait_until_true
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent while not predicate():
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 343, in _enable
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent interface_name = self.device_manager.setup(
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 1890, in setup
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent self.driver.init_l3(interface_name, ip_cidrs,
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/opt/stack/neutron/neutron/agent/linux/interface.py", line 152, in init_l3
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent device.addr.add(ip_cidr)
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 560, in add
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent add_ip_address(cidr, self.name,
self._parent.namespace, scope,
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 853, in add_ip_address
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent privileged.add_ip_address(
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/usr/local/lib/python3.9/site-packages/oslo_privsep/priv_context.py", line
271, in _wrap
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent return self.channel.remote_call(name, args, kwargs,
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent File
"/usr/local/lib/python3.9/site-packages/oslo_privsep/daemon.py", line 215, in
remote_call
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent raise exc_type(*result[2])
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent neutron.privileged.agent.linux.ip_lib.InvalidArgument:
Invalid parameter/value used on interface tapb8ae86a5-ca, namespace
qdhcp-e5e3d4ff-f552-4864-aafc-5ed022616467.
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: ERROR
neutron.agent.dhcp.agent
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: INFO
neutron.agent.dhcp.agent [-] Finished network
e5e3d4ff-f552-4864-aafc-5ed022616467 dhcp configuration
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: INFO
neutron.agent.dhcp.agent [None req-2caf8aeb-fbf0-457f-ac27-35d9aa75db90 None
None] Synchronizing state complete
Jul 26 09:38:36 devoct30 neutron-dhcp-agent[1690530]: INFO
neutron.agent.dhcp.agent [None req-2caf8aeb-fbf0-457f-ac27-35d9aa75db90 None
None] Synchronizing state
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