Discussion:
[Openstack] Error in ml2 with cisco_nexus driver
Sayaji Patil
2013-11-29 19:11:43 UTC
Permalink
Hi,
I have set up an all-in-one installation using devstack. When I try to
create an instance, I get this error when the plugin tries to create a vlan
on the nexus switch

2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
[^[[00;36m-^[[00;32m] ^[[01;35m^[[00;32mstarting thread (client mode):
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in
run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in
_check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error
reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m*SSHException: Error reading SSH
protocol banner*^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed in
update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00mTraceback (most recent call last):
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id,
instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._edit_config(nexus_host, target='running',
config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host,
exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m*NexusConnectFailed: Unable to connect to Nexus
172.25.31.82. Reason: Negotiation failed.*
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00mTraceback (most recent call last):
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in
_process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44,
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172,
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line
192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py",
line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m
self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.

Also now when I try to manually ssh to the switch, I get this error

[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
*ssh_exchange_identification: Connection closed by remote host*

This is my ml2_conf_cisco.ini

[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******

Regards,
Sayaji
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John Smith
2013-11-29 20:17:52 UTC
Permalink
Hi,


I am by no means an expert on openstack matters, but the 1st thing I
think of when seeing that logfile is this:

The system running devstack is is trying to start an ssh session to
the ip 172.25.31.82, and fails. Are you able to do this manually from
the commandline from the same host ? Can you run 'ssh 172.25.31.82'
from the commandline of the host running devstack ?


Regards,


John Smith






Regards,


John Smith
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I try to
create an instance, I get this error when the plugin tries to create a vlan
on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in
run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in
_check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error
reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed in
update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id,
instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._edit_config(nexus_host, target='running',
config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host,
exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82.
Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in
_process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44,
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172,
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line
192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py",
line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m
self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
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Sayaji Patil
2013-11-29 20:29:45 UTC
Permalink
Hi John,
Yes, before launching any instance, I was able to ssh to the
switch.
When I try to create an instance, I see the ssh errors in the logs and
after that
I cannot ssh to the switch. It fails with this error

ssh_exchange_identification: Connection closed by remote host


Regards,
Sayaji
Post by John Smith
Hi,
I am by no means an expert on openstack matters, but the 1st thing I
The system running devstack is is trying to start an ssh session to
the ip 172.25.31.82, and fails. Are you able to do this manually from
the commandline from the same host ? Can you run 'ssh 172.25.31.82'
from the commandline of the host running devstack ?
Regards,
John Smith
Regards,
John Smith
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I try
to
Post by Sayaji Patil
create an instance, I get this error when the plugin tries to create a
vlan
Post by Sayaji Patil
on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in
run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in
_check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error
reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed in
update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/managers.py",
Post by Sayaji Patil
line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
Post by Sayaji Patil
line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
Post by Sayaji Patil
line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id,
instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
Post by Sayaji Patil
line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
Post by Sayaji Patil
line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
Post by Sayaji Patil
line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._edit_config(nexus_host, target='running',
config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
Post by Sayaji Patil
line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
Post by Sayaji Patil
line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host,
exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus
172.25.31.82.
Post by Sayaji Patil
Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in
_process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line
44,
Post by Sayaji Patil
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line
172,
Post by Sayaji Patil
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py",
line
Post by Sayaji Patil
192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py",
line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m
self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/managers.py",
Post by Sayaji Patil
line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit",
context)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/managers.py",
Post by Sayaji Patil
line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
_______________________________________________
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Post by Sayaji Patil
Post to : openstack at lists.openstack.org
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
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John Smith
2013-11-29 20:45:07 UTC
Permalink
Hi,


You could try running 'ssh -vvv 172.25.31.82' to see if the verbose
output turns up anything interesting ? Also, you could try to move
your ~/.ssh out of the way (mv ~/.ssh ~/.ssh.bak) to do a quick check
to see if there any issues with keyfiles ?


Regards,


John Smith
Post by Sayaji Patil
Hi John,
Yes, before launching any instance, I was able to ssh to the
switch.
When I try to create an instance, I see the ssh errors in the logs and after
that
I cannot ssh to the switch. It fails with this error
ssh_exchange_identification: Connection closed by remote host
Regards,
Sayaji
Post by John Smith
Hi,
I am by no means an expert on openstack matters, but the 1st thing I
The system running devstack is is trying to start an ssh session to
the ip 172.25.31.82, and fails. Are you able to do this manually from
the commandline from the same host ? Can you run 'ssh 172.25.31.82'
from the commandline of the host running devstack ?
Regards,
John Smith
Regards,
John Smith
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I try to
create an instance, I get this error when the plugin tries to create a vlan
on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in
run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in
_check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error
reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed in
update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id,
instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._edit_config(nexus_host, target='running',
config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host,
exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82.
Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in
_process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44,
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172,
in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line
192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/plugin.py",
line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m
self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
_______________________________________________
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Post to : openstack at lists.openstack.org
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Kyle Mestery (kmestery)
2013-11-30 03:56:33 UTC
Permalink
Hi,
I have set up an all-in-one installation using devstack. When I try to create an instance, I get this error when the plugin tries to create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh [^[[00;36m-^[[00;32m] ^[[01;35m^[[00;32mstarting thread (client mode): 0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log /usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers [^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR neutron.openstack.common.rpc.amqp [^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone None^[[01;31m] ^[[01;35m^[[01;31mException during message handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Sayali:

Can you try ensuring you've done an ssh to the switch using the
same username you are running devstack as? I believe you have
to do this for the ssh to work, and only need to do this once. Let
me know if this solves your problem.

Thanks,
Kyle
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Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Post to : openstack at lists.openstack.org
Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Sayaji Patil
2013-11-30 18:42:09 UTC
Permalink
Thanks Kyle, it solved my problem.

Regards,
Sayaji


On Fri, Nov 29, 2013 at 7:56 PM, Kyle Mestery (kmestery) <kmestery at cisco.com
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I try
to create an instance, I get this error when the plugin tries to create a
vlan on the nexus switch
Post by Sayaji Patil
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in
run^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File
"/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in
_check_banner^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error
reading SSH protocol banner' + str(x))^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading SSH
protocol banner^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed in
update_port_postcommit^[[00m
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 156, in _call_on_drivers
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 159, in update_port_postcommit
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 149, in _invoke_nexus_on_port_event
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id,
instance_id)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py",
line 114, in _manage_port
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m vlan_name, port_id)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 194, in create_and_trunk_vlan
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 131, in create_vlan
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m self._edit_config(nexus_host, target='running',
config=confstr)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 68, in _edit_config
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py",
line 114, in nxos_connect
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host,
exc=e)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82.
Reason: Negotiation failed.
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers
^[[01;35m^[[00m
Post by Sayaji Patil
2013-11-27 16:38:29.755 ^[[01;31mERROR neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message handling^[[00m
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in
_process_data
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m **args)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44,
in dispatch
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File
"/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172,
in dispatch
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line
192, in update_device_up
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py",
line 690, in update_port_status
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m
self.mechanism_manager.update_port_postcommit(mech_context)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 395, in update_port_postcommit
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py",
line 167, in _call_on_drivers
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00m method=method_name
Post by Sayaji Patil
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp
^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Post by Sayaji Patil
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Can you try ensuring you've done an ssh to the switch using the
same username you are running devstack as? I believe you have
to do this for the ssh to work, and only need to do this once. Let
me know if this solves your problem.
Thanks,
Kyle
Post by Sayaji Patil
_______________________________________________
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Post by Sayaji Patil
Post to : openstack at lists.openstack.org
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
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Qin, Xiaohong
2014-04-02 17:28:56 UTC
Permalink
Hi Kyle,

I was also trying to use this Nexus driver with Ml2/VXLAN deployment in devstack. But for some reason, it didn't invoke the nexus driver code and didn't do anything on my Nexus switch. I have followed the instructions posted in this link,

https://wiki.openstack.org/wiki/Neutron/ML2/MechCiscoNexus

Did I miss anything here? I have pulled the latest OpenStack code from the main branch.

Thanks.

Dennis Qin (aka Xiaohong Qin)

-----Original Message-----
From: Kyle Mestery (kmestery) [mailto:kmestery at cisco.com]
Sent: Friday, November 29, 2013 7:57 PM
To: Sayaji Patil
Cc: <openstack at lists.openstack.org>
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I
try to create an instance, I get this error when the plugin tries to
create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed
in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR
neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message
handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Sayali:

Can you try ensuring you've done an ssh to the switch using the same username you are running devstack as? I believe you have to do this for the ssh to work, and only need to do this once. Let me know if this solves your problem.

Thanks,
Kyle
Post by Sayaji Patil
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Henry Gessau
2014-04-02 18:56:14 UTC
Permalink
Hi Dennis,
Post by Qin, Xiaohong
Hi Kyle,
I was also trying to use this Nexus driver with Ml2/VXLAN deployment in
devstack. But for some reason, it didn't invoke the nexus driver code and
The Nexus driver in ML2 does not support VXLAN. It supports only VLAN.
Post by Qin, Xiaohong
didn't do anything on my Nexus switch. I have followed the instructions
posted in this link,
https://wiki.openstack.org/wiki/Neutron/ML2/MechCiscoNexus
Did I miss anything here? I have pulled the latest OpenStack code from the main branch.
Thanks.
Dennis Qin (aka Xiaohong Qin)
-----Original Message-----
From: Kyle Mestery (kmestery) [mailto:kmestery at cisco.com]
Sent: Friday, November 29, 2013 7:57 PM
To: Sayaji Patil
Cc: <openstack at lists.openstack.org>
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I
try to create an instance, I get this error when the plugin tries to
create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus' failed
in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR
neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message
handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Can you try ensuring you've done an ssh to the switch using the same username you are running devstack as? I believe you have to do this for the ssh to work, and only need to do this once. Let me know if this solves your problem.
Thanks,
Kyle
Post by Sayaji Patil
_______________________________________________
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Post to : openstack at lists.openstack.org
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Qin, Xiaohong
2014-04-02 20:21:33 UTC
Permalink
Hi Henry,

Thanks for the info. Do you have any idea that this will be addressed in future releases?

Thanks.

Dennis Qin

-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 11:56 AM
To: openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver

Hi Dennis,
Post by Qin, Xiaohong
Hi Kyle,
I was also trying to use this Nexus driver with Ml2/VXLAN deployment
in devstack. But for some reason, it didn't invoke the nexus driver
code and
The Nexus driver in ML2 does not support VXLAN. It supports only VLAN.
Post by Qin, Xiaohong
didn't do anything on my Nexus switch. I have followed the
instructions posted in this link,
https://wiki.openstack.org/wiki/Neutron/ML2/MechCiscoNexus
Did I miss anything here? I have pulled the latest OpenStack code from the main branch.
Thanks.
Dennis Qin (aka Xiaohong Qin)
-----Original Message-----
From: Kyle Mestery (kmestery) [mailto:kmestery at cisco.com]
Sent: Friday, November 29, 2013 7:57 PM
To: Sayaji Patil
Cc: <openstack at lists.openstack.org>
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I
try to create an instance, I get this error when the plugin tries to
create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus'
failed in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR
neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message
handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Can you try ensuring you've done an ssh to the switch using the same username you are running devstack as? I believe you have to do this for the ssh to work, and only need to do this once. Let me know if this solves your problem.
Thanks,
Kyle
Post by Sayaji Patil
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Henry Gessau
2014-04-02 21:12:30 UTC
Permalink
It's on the list of things to do but I can't make any promises.
Post by Qin, Xiaohong
Hi Henry,
Thanks for the info. Do you have any idea that this will be addressed in future releases?
Thanks.
Dennis Qin
-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 11:56 AM
To: openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Hi Dennis,
Post by Qin, Xiaohong
Hi Kyle,
I was also trying to use this Nexus driver with Ml2/VXLAN deployment
in devstack. But for some reason, it didn't invoke the nexus driver
code and
The Nexus driver in ML2 does not support VXLAN. It supports only VLAN.
Post by Qin, Xiaohong
didn't do anything on my Nexus switch. I have followed the
instructions posted in this link,
https://wiki.openstack.org/wiki/Neutron/ML2/MechCiscoNexus
Did I miss anything here? I have pulled the latest OpenStack code from the main branch.
Thanks.
Dennis Qin (aka Xiaohong Qin)
-----Original Message-----
From: Kyle Mestery (kmestery) [mailto:kmestery at cisco.com]
Sent: Friday, November 29, 2013 7:57 PM
To: Sayaji Patil
Cc: <openstack at lists.openstack.org>
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I
try to create an instance, I get this error when the plugin tries to
create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus'
failed in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR
neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message
handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Can you try ensuring you've done an ssh to the switch using the same username you are running devstack as? I believe you have to do this for the ssh to work, and only need to do this once. Let me know if this solves your problem.
Thanks,
Kyle
Post by Sayaji Patil
_______________________________________________
Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Post to : openstack at lists.openstack.org
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_______________________________________________
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Post to : openstack at lists.openstack.org
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Qin, Xiaohong
2014-04-02 21:15:16 UTC
Permalink
Thanks. Also, I just deployed VLAN with Ml2 but still didn't see any configurations been delivered to the Nexus switch. Is there any sample localrc files that I can leverage?

Thanks.

Dennis Qin

-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 2:13 PM
To: Qin, Xiaohong; openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver

It's on the list of things to do but I can't make any promises.
Post by Qin, Xiaohong
Hi Henry,
Thanks for the info. Do you have any idea that this will be addressed in future releases?
Thanks.
Dennis Qin
-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 11:56 AM
To: openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Hi Dennis,
Post by Qin, Xiaohong
Hi Kyle,
I was also trying to use this Nexus driver with Ml2/VXLAN deployment
in devstack. But for some reason, it didn't invoke the nexus driver
code and
The Nexus driver in ML2 does not support VXLAN. It supports only VLAN.
Post by Qin, Xiaohong
didn't do anything on my Nexus switch. I have followed the
instructions posted in this link,
https://wiki.openstack.org/wiki/Neutron/ML2/MechCiscoNexus
Did I miss anything here? I have pulled the latest OpenStack code from the main branch.
Thanks.
Dennis Qin (aka Xiaohong Qin)
-----Original Message-----
From: Kyle Mestery (kmestery) [mailto:kmestery at cisco.com]
Sent: Friday, November 29, 2013 7:57 PM
To: Sayaji Patil
Cc: <openstack at lists.openstack.org>
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I
try to create an instance, I get this error when the plugin tries to
create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus'
failed in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR
neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message
handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Can you try ensuring you've done an ssh to the switch using the same username you are running devstack as? I believe you have to do this for the ssh to work, and only need to do this once. Let me know if this solves your problem.
Thanks,
Kyle
Post by Sayaji Patil
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Henry Gessau
2014-04-03 12:31:56 UTC
Permalink
Post by Qin, Xiaohong
Thanks. Also, I just deployed VLAN with Ml2 but still didn't see any
configurations been delivered to the Nexus switch. Is there any sample
localrc files that I can leverage?
ENABLE_TENANT_VLANS=True
PHYSICAL_NETWORK=physnet1
OVS_PHYSICAL_BRIDGE=br-eth1

Q_PLUGIN=ml2
Q_ML2_PLUGIN_MECHANISM_DRIVERS=openvswitch,cisco_nexus
Q_PLUGIN_EXTRA_CONF_PATH=(home/stack)
Q_PLUGIN_EXTRA_CONF_FILES=(ml2_conf_cisco.ini)
ML2_VLAN_RANGES=physnet1:120:129

You need to pick VLAN ranges suitable for your environment.

The contents of /home/stack/ml2_conf_cisco.ini should look something like this:

[ml2_mech_cisco_nexus:10.9.8.7]
devstack-host=1/12
username=admin
password=<nexus-login-password>
ssh_port=22

Replace 10.9.8.7 with the IP of your nexus. Before firing up devstack,
manually ssh to that IP and make sure you can log in successfully.

1/12 is the physical port on my nexus that is connected to my devstack host.
Make sure to specify the correct port for your setup.
Post by Qin, Xiaohong
Thanks.
Dennis Qin
-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 2:13 PM
To: Qin, Xiaohong; openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
It's on the list of things to do but I can't make any promises.
Post by Qin, Xiaohong
Hi Henry,
Thanks for the info. Do you have any idea that this will be addressed in future releases?
Thanks.
Dennis Qin
-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 11:56 AM
To: openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Hi Dennis,
Post by Qin, Xiaohong
Hi Kyle,
I was also trying to use this Nexus driver with Ml2/VXLAN deployment
in devstack. But for some reason, it didn't invoke the nexus driver
code and
The Nexus driver in ML2 does not support VXLAN. It supports only VLAN.
Post by Qin, Xiaohong
didn't do anything on my Nexus switch. I have followed the
instructions posted in this link,
https://wiki.openstack.org/wiki/Neutron/ML2/MechCiscoNexus
Did I miss anything here? I have pulled the latest OpenStack code from the main branch.
Thanks.
Dennis Qin (aka Xiaohong Qin)
-----Original Message-----
From: Kyle Mestery (kmestery) [mailto:kmestery at cisco.com]
Sent: Friday, November 29, 2013 7:57 PM
To: Sayaji Patil
Cc: <openstack at lists.openstack.org>
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When I
try to create an instance, I get this error when the plugin tries to
create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading SSH
protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus'
failed in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR
neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message
handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Can you try ensuring you've done an ssh to the switch using the same username you are running devstack as? I believe you have to do this for the ssh to work, and only need to do this once. Let me know if this solves your problem.
Thanks,
Kyle
Post by Sayaji Patil
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Qin, Xiaohong
2014-04-03 21:20:53 UTC
Permalink
Hi Henry,

Thanks very much for the tip and I did see the configurations been sent down to the Nexus switch. Here is what I found,

After calling this neutron cli,

neutron port-create private --fixed-ip ip_address=10.0.0.8

The following CLIs are delivered to the Nexus switch,

vlan 100

under the interface,

switchport trunk allowed vlan 100

Then I called the delete port neutron CLI,

neutron port-delete 0fdcdb71-f1f4-448c-919f-b84796d28758

Nothing happened on Nexus switch side. I was expecting the vlans and swithport configurations been cleaned up as well. Also any reasons why these Nexus configurations are tied to neutron port CLIs, not network or subnet CLIs?

Thanks.

Dennis Qin

-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Thursday, April 03, 2014 5:32 AM
To: Qin, Xiaohong; openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Qin, Xiaohong
Thanks. Also, I just deployed VLAN with Ml2 but still didn't see any
configurations been delivered to the Nexus switch. Is there any sample
localrc files that I can leverage?
ENABLE_TENANT_VLANS=True
PHYSICAL_NETWORK=physnet1
OVS_PHYSICAL_BRIDGE=br-eth1

Q_PLUGIN=ml2
Q_ML2_PLUGIN_MECHANISM_DRIVERS=openvswitch,cisco_nexus
Q_PLUGIN_EXTRA_CONF_PATH=(home/stack)
Q_PLUGIN_EXTRA_CONF_FILES=(ml2_conf_cisco.ini)
ML2_VLAN_RANGES=physnet1:120:129

You need to pick VLAN ranges suitable for your environment.

The contents of /home/stack/ml2_conf_cisco.ini should look something like this:

[ml2_mech_cisco_nexus:10.9.8.7]
devstack-host=1/12
username=admin
password=<nexus-login-password>
ssh_port=22

Replace 10.9.8.7 with the IP of your nexus. Before firing up devstack, manually ssh to that IP and make sure you can log in successfully.

1/12 is the physical port on my nexus that is connected to my devstack host.
Make sure to specify the correct port for your setup.
Post by Qin, Xiaohong
Thanks.
Dennis Qin
-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 2:13 PM
To: Qin, Xiaohong; openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
It's on the list of things to do but I can't make any promises.
Post by Qin, Xiaohong
Hi Henry,
Thanks for the info. Do you have any idea that this will be addressed in future releases?
Thanks.
Dennis Qin
-----Original Message-----
From: Henry Gessau [mailto:gessau at cisco.com]
Sent: Wednesday, April 02, 2014 11:56 AM
To: openstack at lists.openstack.org
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Hi Dennis,
Post by Qin, Xiaohong
Hi Kyle,
I was also trying to use this Nexus driver with Ml2/VXLAN deployment
in devstack. But for some reason, it didn't invoke the nexus driver
code and
The Nexus driver in ML2 does not support VXLAN. It supports only VLAN.
Post by Qin, Xiaohong
didn't do anything on my Nexus switch. I have followed the
instructions posted in this link,
https://wiki.openstack.org/wiki/Neutron/ML2/MechCiscoNexus
Did I miss anything here? I have pulled the latest OpenStack code from the main branch.
Thanks.
Dennis Qin (aka Xiaohong Qin)
-----Original Message-----
From: Kyle Mestery (kmestery) [mailto:kmestery at cisco.com]
Sent: Friday, November 29, 2013 7:57 PM
To: Sayaji Patil
Cc: <openstack at lists.openstack.org>
Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver
Post by Sayaji Patil
Hi,
I have set up an all-in-one installation using devstack. When
I try to create an instance, I get this error when the plugin tries
to create a vlan on the nexus switch
2013-11-27 16:38:29.752 ^[[00;32mDEBUG ncclient.transport.ssh
0x4509ed0L^[[00m ^[[00;33mfrom (pid=13833) _log
/usr/lib/python2.6/site-packages/paramiko/transport.py:1406^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mTraceback (most recent call
last):^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1557, in run^[[00m
2013-11-27 16:38:29.753 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m self._check_banner()^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m File "/usr/lib/python2.6/site-packages/paramiko/transport.py", line 1683, in _check_banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh [^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m raise SSHException('Error reading SSH protocol banner' + str(x))^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31mSSHException: Error reading
SSH protocol banner^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR ncclient.transport.ssh
[^[[00;36m-^[[01;31m] ^[[01;35m^[[01;31m^[[00m
2013-11-27 16:38:29.754 ^[[01;31mERROR neutron.plugins.ml2.managers
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mMechanism driver 'cisco_nexus'
failed in update_port_postcommit^[[00m
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 156, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m getattr(driver.obj, method_name)(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 159, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._invoke_nexus_on_port_event(context)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 149, in _invoke_nexus_on_port_event
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._manage_port(vlan_name, vlan_id, host_id, instance_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/mech_cisco_nexus.py", line 114, in _manage_port
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m vlan_name, port_id)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 194, in create_and_trunk_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self.create_vlan(nexus_host, vlan_id, vlan_name)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 131, in create_vlan
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m self._edit_config(nexus_host, target='running', config=confstr)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 68, in _edit_config
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m mgr = self.nxos_connect(nexus_host)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/drivers/cisco/nexus_network_driver.py", line 114, in nxos_connect
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m raise cexc.NexusConnectFailed(nexus_host=nexus_host, exc=e)
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00mNexusConnectFailed: Unable to connect to Nexus 172.25.31.82. Reason: Negotiation failed.
^[[01;31m2013-11-27 16:38:29.754 TRACE neutron.plugins.ml2.managers ^[[01;35m^[[00m
2013-11-27 16:38:29.755 ^[[01;31mERROR
neutron.openstack.common.rpc.amqp
[^[[01;36mreq-b51e27b6-2808-47ad-95db-e9d0113fcfe1 ^[[00;36mNone
None^[[01;31m] ^[[01;35m^[[01;31mException during message
handling^[[00m
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in _process_data
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m **args)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m neutron_ctxt, version, method, namespace, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, in dispatch
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m result = getattr(proxyobj, method)(ctxt, **kwargs)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in update_device_up
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m q_const.PORT_STATUS_ACTIVE)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 690, in update_port_status
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self.mechanism_manager.update_port_postcommit(mech_context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in update_port_postcommit
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m self._call_on_drivers("update_port_postcommit", context)
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 167, in _call_on_drivers
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00m method=method_name
^[[01;31m2013-11-27 16:38:29.755 TRACE neutron.openstack.common.rpc.amqp ^[[01;35m^[[00mMechanismDriverError: update_port_postcommit failed.
Also now when I try to manually ssh to the switch, I get this error
[root at openstackcoi logs]# ssh 172.25.31.82 -l admin
ssh_exchange_identification: Connection closed by remote host
This is my ml2_conf_cisco.ini
[ml2_mech_cisco_nexus:172.25.31.82]
openstackcoi=1/1
ssh_port=22
username=admin
password=*******
Regards,
Sayaji
Can you try ensuring you've done an ssh to the switch using the same username you are running devstack as? I believe you have to do this for the ssh to work, and only need to do this once. Let me know if this solves your problem.
Thanks,
Kyle
Post by Sayaji Patil
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_______________________________________________
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Post to : openstack at lists.openstack.org
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