[Yahoo-eng-team] [Bug 1528977] Re: Neutron router not working with latest iproute2 package included in CentOS-7.2-1511

2015-12-28 Thread Assaf Muller 
*** This bug is a duplicate of bug 1497309 ***
https://bugs.launchpad.net/bugs/1497309

Closing as a duplicate of bug 1497309.

** This bug has been marked a duplicate of bug 1497309
   l3-agent unable to parse output from ip netns list (iproute2 >= 4.0)

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Title:
  Neutron router not working with latest iproute2 package included in
  CentOS-7.2-1511

Status in neutron:
  Confirmed

Bug description:
  Seems that something has been changed in the new iproute version and
  now attempts to add more than one interface to router cause errors
  posted at the bottom. This affects neutron-l3-agent on CentOS-7.2-1511
  and possible on RedHat (cannot check this).

  Quick solution is to simple downgrade the package:
  # wget 
http://mirror.centos.org/centos/7.1.1503/os/x86_64/Packages/iproute-3.10.0-21.el7.x86_64.rpm
  # yum -y downgrade ./iproute-3.10.0-21.el7.x86_64.rpm

  Part of the /var/log/neutron/l3-agent.log:

  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.linux.utils [-]
  Command: ['ip', 'netns', 'add', 
u'qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a']
  Exit code: 1
  Stdin:
  Stdout:
  Stderr: Cannot create namespace file 
"/var/run/netns/qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a": File exists

  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info [-]
  Command: ['ip', 'netns', 'add', 
u'qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a']
  Exit code: 1
  Stdin:
  Stdout:
  Stderr: Cannot create namespace file 
"/var/run/netns/qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a": File exists
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info Traceback 
(most recent call last):
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/common/utils.py", line 356, in call
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info return 
func(*args, **kwargs)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 692, 
in process
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self._process_internal_ports(agent.pd)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 396, 
in _process_internal_ports
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self.internal_network_added(p)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 328, 
in internal_network_added
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
INTERNAL_DEV_PREFIX)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 303, 
in _internal_network_added
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
prefix=prefix)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/interface.py", line 252, 
in plug
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info bridge, 
namespace, prefix)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/interface.py", line 483, 
in plug_new
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
namespace2=namespace)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 144, in 
add_veth
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self.ensure_namespace(namespace2)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 163, in 
ensure_namespace
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info ip = 
self.netns.add(name)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 793, in 
add
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self._as_root([], ('add', name), use_root_namespace=True)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 280, in 
_as_root
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
use_root_namespace=use_root_namespace)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 80, in 
_as_root
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info

[Yahoo-eng-team] [Bug 1528977] Re: Neutron router not working with latest iproute2 package included in CentOS-7.2-1511

2015-12-23 Thread Andrew Poltavchenko 
** Also affects: centos
   Importance: Undecided
   Status: New

** No longer affects: centos

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Title:
  Neutron router not working with latest iproute2 package included in
  CentOS-7.2-1511

Status in neutron:
  New

Bug description:
  Seems that something has been changed in the new iproute version and
  now attempts to add more than one interface to router cause errors
  posted at the bottom. This affects neutron-l3-agent on CentOS-7.2-1511
  and possible on RedHat (cannot check this).

  Quick solution is to simple downgrade the package:
  # wget 
http://mirror.centos.org/centos/7.1.1503/os/x86_64/Packages/iproute-3.10.0-21.el7.x86_64.rpm
  # yum -y downgrade ./iproute-3.10.0-21.el7.x86_64.rpm

  Part of the /var/log/neutron/l3-agent.log:

  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.linux.utils [-]
  Command: ['ip', 'netns', 'add', 
u'qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a']
  Exit code: 1
  Stdin:
  Stdout:
  Stderr: Cannot create namespace file 
"/var/run/netns/qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a": File exists

  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info [-]
  Command: ['ip', 'netns', 'add', 
u'qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a']
  Exit code: 1
  Stdin:
  Stdout:
  Stderr: Cannot create namespace file 
"/var/run/netns/qrouter-ec62eace-0415-49b5-9c26-dca1677ba85a": File exists
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info Traceback 
(most recent call last):
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/common/utils.py", line 356, in call
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info return 
func(*args, **kwargs)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 692, 
in process
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self._process_internal_ports(agent.pd)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 396, 
in _process_internal_ports
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self.internal_network_added(p)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 328, 
in internal_network_added
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
INTERNAL_DEV_PREFIX)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 303, 
in _internal_network_added
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
prefix=prefix)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/interface.py", line 252, 
in plug
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info bridge, 
namespace, prefix)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/interface.py", line 483, 
in plug_new
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
namespace2=namespace)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 144, in 
add_veth
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self.ensure_namespace(namespace2)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 163, in 
ensure_namespace
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info ip = 
self.netns.add(name)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 793, in 
add
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
self._as_root([], ('add', name), use_root_namespace=True)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 280, in 
_as_root
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
use_root_namespace=use_root_namespace)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File 
"/usr/lib/python2.7/site-packages/neutron/agent/linux/ip_lib.py", line 80, in 
_as_root
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info 
log_fail_as_error=self.log_fail_as_error)
  2015-12-24 01:35:05.794 6343 ERROR neutron.agent.l3.router_info   File