** Also affects: neutron (Ubuntu)
Importance: Undecided
Status: New
** Also affects: neutron (Ubuntu Zesty)
Importance: Undecided
Status: New
** Also affects: neutron (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: neutron (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Also affects: cloud-archive
Importance: Undecided
Status: New
** Also affects: cloud-archive/liberty
Importance: Undecided
Status: New
** Also affects: cloud-archive/newton
Importance: Undecided
Status: New
** Also affects: cloud-archive/mitaka
Importance: Undecided
Status: New
** Changed in: cloud-archive/liberty
Status: New => Triaged
** Changed in: cloud-archive/liberty
Importance: Undecided => High
** Changed in: cloud-archive/mitaka
Status: New => Triaged
** Changed in: cloud-archive/mitaka
Importance: Undecided => High
** Changed in: cloud-archive/newton
Importance: Undecided => High
** Changed in: neutron (Ubuntu Zesty)
Importance: Undecided => High
** Changed in: neutron (Ubuntu Yakkety)
Importance: Undecided => High
** Changed in: neutron (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: cloud-archive/newton
Status: New => Triaged
** Changed in: neutron (Ubuntu Xenial)
Status: New => Triaged
** Changed in: neutron (Ubuntu Zesty)
Status: New => Triaged
** Changed in: neutron (Ubuntu Yakkety)
Status: New => Triaged
--
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1573073
Title:
When router has no ports _process_updated_router fails because the
namespace does not exist
Status in Ubuntu Cloud Archive:
Triaged
Status in Ubuntu Cloud Archive liberty series:
Triaged
Status in Ubuntu Cloud Archive mitaka series:
Triaged
Status in Ubuntu Cloud Archive newton series:
Triaged
Status in neutron:
In Progress
Status in neutron package in Ubuntu:
Triaged
Status in neutron source package in Xenial:
Triaged
Status in neutron source package in Yakkety:
Triaged
Status in neutron source package in Zesty:
Triaged
Bug description:
Happens in Kilo. Cannot test on other releases.
Steps to reproduce:
1) create a router and set at least a port, also the gateway is fine
2) check that the namespace exists with
ip netns show | grep qrouter-<uuid>
3) check the ports are there
ip netns exec qrouter-<uuid> ip addr show
4) delete all ports from the router
5) check that only loopback interface is present
ip netns exec qrouter-<uuid> ip addr show
6) run the cronjob task that is installed in the file
/etc/cron.d/neutron-l3-agent-netns-cleanup
so basically run this command:
/usr/bin/neutron-netns-cleanup --config-file=/etc/neutron/neutron.conf
--config-file=/etc/neutron/l3_agent.ini
7) the namespace should be gone:
ip netns show | grep qrouter-<uuid>
8) delete the neutron router.
9) check log file /var/log/neutron/vpn-agent.log
When the router has no ports the namespace is deleted from the network node
by the cronjob. However this brakes the router updates and the file
vpn-agent.log is flooded with this traces:
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info Traceback
(most recent call last):
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info File
"/usr/lib/python2.7/dist-packages/neutron/common/utils.py", line 343, in call
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info return
func(*args, **kwargs)
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/router_info.py", line 628,
in process
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info
self._process_internal_ports()
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/router_info.py", line 404,
in _process_internal_ports
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info
existing_devices = self._get_existing_devices()
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/router_info.py", line 328,
in _get_existing_devices
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info ip_devs
= ip_wrapper.get_devices(exclude_loopback=True)
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/ip_lib.py", line 102, in
get_devices
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info
log_fail_as_error=self.log_fail_as_error
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 137, in
execute
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info raise
RuntimeError(m)
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info RuntimeError:
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info Command:
['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns',
'exec', 'qrouter-8fc0f640-35bb-4d0b-bbbd-80c22be0e762', 'find',
'/sys/class/net', '-maxdepth', '1', '-type', 'l', '-printf', '%f ']
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info Exit code: 1
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info Stdin:
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info Stdout:
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info Stderr:
Cannot open network namespace "qrouter-8fc0f640-35bb-4d0b-bbbd-80c22be0e762":
No such file or directory
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info
2016-04-21 16:22:17.771 23382 TRACE neutron.agent.l3.router_info
2016-04-21 16:22:17.774 23382 ERROR neutron.agent.l3.agent [-] Failed to
process compatible router '8fc0f640-35bb-4d0b-bbbd-80c22be0e762'
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent Traceback (most
recent call last):
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/agent.py", line 467, in
_process_router_update
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
self._process_router_if_compatible(router)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/agent.py", line 414, in
_process_router_if_compatible
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
self._process_updated_router(router)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/agent.py", line 428, in
_process_updated_router
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
ri.process(self)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/common/utils.py", line 346, in call
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent self.logger(e)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
six.reraise(self.type_, self.value, self.tb)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/common/utils.py", line 343, in call
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent return
func(*args, **kwargs)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/router_info.py", line 628,
in process
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
self._process_internal_ports()
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/router_info.py", line 404,
in _process_internal_ports
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
existing_devices = self._get_existing_devices()
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/l3/router_info.py", line 328,
in _get_existing_devices
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent ip_devs =
ip_wrapper.get_devices(exclude_loopback=True)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/ip_lib.py", line 102, in
get_devices
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
log_fail_as_error=self.log_fail_as_error
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 137, in
execute
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent raise
RuntimeError(m)
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent RuntimeError:
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent Command: ['sudo',
'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec',
'qrouter-8fc0f640-35bb-4d0b-bbbd-80c22be0e762', 'find', '/sys/class/net',
'-maxdepth', '1', '-type', 'l', '-printf', '%f ']
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent Exit code: 1
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent Stdin:
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent Stdout:
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent Stderr: Cannot
open network namespace "qrouter-8fc0f640-35bb-4d0b-bbbd-80c22be0e762": No such
file or directory
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
2016-04-21 16:22:17.774 23382 TRACE neutron.agent.l3.agent
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