Reviewed: https://review.openstack.org/406428 Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=21bb77667007b0b140c17d9104204943c4a0f4cc Submitter: Jenkins Branch: master
commit 21bb77667007b0b140c17d9104204943c4a0f4cc Author: Brian Haley <[email protected]> Date: Fri Dec 2 23:07:29 2016 -0500 Correctly configure IPv6 addresses on upgrades When starting the dhcp-agent after an upgrade, there could be stale IPv6 addresses in the namespace that had been configured via SLAAC. These need to be removed, and the same address added back statically, in order for the agent to start up correctly. To avoid the race condition where an IPv6 RA could arrive while we are making this change, we must move the call to disable RAs in the namespace from plug(), since devices may already exist that are receiving packets. Uncovered by the grenade tests. Change-Id: I7e1e5d6c1fa938918aac3fb63888d20ff4088ba7 Closes-bug: #1627902 ** Changed in: neutron Status: In Progress => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1627902 Title: DHCP agent conflicting with dynamic IPv6 addresses Status in neutron: Fix Released Bug description: Below in gate logs. Completely breaks the DHCP for that network because it's trying to add an address that conflicts with one given to it via RA. Cause is the merge of d86f1b87f01c53c3e0b085086133b311e5bf3ab5 which allowed the agent to be configured with stateless v6 addresses to serve metadata correctly. http://logs.openstack.org/12/343312/5/gate/gate-tempest-dsvm-neutron- full-ubuntu- xenial/c11b933/logs/screen-q-dhcp.txt.gz?level=TRACE#_2016-09-26_21_45_40_604 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.linux.utils [-] Exit code: 2; Stdin: ; Stdout: ; Stderr: RTNETLINK answers: File exists 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent [-] Unable to enable dhcp for 81d252a2-8207-4e8c-a286-07fb3494a3ec. 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent Traceback (most recent call last): 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/dhcp/agent.py", line 114, in call_driver 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent getattr(driver, action)(**action_kwargs) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/dhcp.py", line 212, in enable 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent interface_name = self.device_manager.setup(self.network) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/dhcp.py", line 1396, in setup 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent namespace=network.namespace) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/interface.py", line 129, in init_l3 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent device.addr.add(ip_cidr) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/ip_lib.py", line 577, in add 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent self._as_root([net.version], tuple(args)) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/ip_lib.py", line 364, in _as_root 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent use_root_namespace=use_root_namespace) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/ip_lib.py", line 95, in _as_root 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent log_fail_as_error=self.log_fail_as_error) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/ip_lib.py", line 104, in _execute 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent log_fail_as_error=log_fail_as_error) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent File "/opt/stack/new/neutron/neutron/agent/linux/utils.py", line 138, in execute 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent raise RuntimeError(msg) 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent RuntimeError: Exit code: 2; Stdin: ; Stdout: ; Stderr: RTNETLINK answers: File exists 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent 2016-09-26 21:45:40.604 13605 ERROR neutron.agent.dhcp.agent To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1627902/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
