** Changed in: neutron
Status: Fix Committed => Fix Released
** Changed in: neutron
Milestone: None => liberty-3
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https://bugs.launchpad.net/bugs/1470579
Title:
Linux bridge agent fails if test VXLAN interface exists
Status in neutron:
Fix Released
Bug description:
During initialization, the Linux bridge agent appears to test VXLAN
operation by creating VXLAN interface vxlan-1 with VNID 1. If a VXLAN
interface with VNID 1 already exists on the host, it fails. I found
this particular issue because my labs run on public cloud hosts that
require manual VXLAN interfaces to work around multi-host networking
constraints. Most hosts probably won't contain existing VXLAN
interfaces. However, this test should use a VNID from the range in the
ML2 configuration file (vni_ranges) rather than VNID 1.
2015-07-01 16:15:26.838 18614 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf',
'ip', 'link', 'add', 'vxlan-1', 'type', 'vxlan', 'id', '1', 'dev', 'eth1',
'proxy']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: File exists
2015-07-01 16:15:26.839 18614 CRITICAL neutron [-] RuntimeError:
Command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf',
'ip', 'link', 'add', 'vxlan-1', 'type', 'vxlan', 'id', '1', 'dev', 'eth1',
'proxy']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: File exists
2015-07-01 16:15:26.839 18614 TRACE neutron Traceback (most recent call last):
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/bin/neutron-linuxbridge-agent", line 10, in <module>
2015-07-01 16:15:26.839 18614 TRACE neutron sys.exit(main())
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py",
line 1016, in main
2015-07-01 16:15:26.839 18614 TRACE neutron polling_interval)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py",
line 748, in __init__
2015-07-01 16:15:26.839 18614 TRACE neutron
self.setup_linux_bridge(interface_mappings)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py",
line 818, in setup_linux_bridge
2015-07-01 16:15:26.839 18614 TRACE neutron self.br_mgr =
LinuxBridgeManager(interface_mappings)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py",
line 82, in __init__
2015-07-01 16:15:26.839 18614 TRACE neutron self.check_vxlan_support()
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py",
line 566, in check_vxlan_support
2015-07-01 16:15:26.839 18614 TRACE neutron if
self.vxlan_ucast_supported():
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py",
line 529, in vxlan_ucast_supported
2015-07-01 16:15:26.839 18614 TRACE neutron test_iface =
self.ensure_vxlan(seg_id)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/plugins/linuxbridge/agent/linuxbridge_neutron_agent.py",
line 249, in ensure_vxlan
2015-07-01 16:15:26.839 18614 TRACE neutron int_vxlan =
self.ip.add_vxlan(interface, segmentation_id, **args)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/ip_lib.py", line 183, in
add_vxlan
2015-07-01 16:15:26.839 18614 TRACE neutron self._as_root([], 'link', cmd)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/ip_lib.py", line 69, in
_as_root
2015-07-01 16:15:26.839 18614 TRACE neutron
log_fail_as_error=self.log_fail_as_error)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/ip_lib.py", line 78, in
_execute
2015-07-01 16:15:26.839 18614 TRACE neutron
log_fail_as_error=log_fail_as_error)
2015-07-01 16:15:26.839 18614 TRACE neutron File
"/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 137, in
execute
2015-07-01 16:15:26.839 18614 TRACE neutron raise RuntimeError(m)
2015-07-01 16:15:26.839 18614 TRACE neutron RuntimeError:
2015-07-01 16:15:26.839 18614 TRACE neutron Command: ['sudo',
'/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'link', 'add',
'vxlan-1', 'type', 'vxlan', 'id', '1', 'dev', 'eth1', 'proxy']
2015-07-01 16:15:26.839 18614 TRACE neutron Exit code: 2
2015-07-01 16:15:26.839 18614 TRACE neutron Stdin:
2015-07-01 16:15:26.839 18614 TRACE neutron Stdout:
2015-07-01 16:15:26.839 18614 TRACE neutron Stderr: RTNETLINK answers: File
exists
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