[Openstack] Error in ml2 with cisco_nexus driver
Qin, Xiaohong
Xiaohong.Qin at emc.com
Wed Apr 2 21:15:16 UTC 2014
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.
On Wed, Apr 02, at 4:21 pm, Qin, Xiaohong wrote:
> 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,
>
> On Wed, Apr 02, at 1:28 pm Qin, Xiaohong (Xiaohong.Qin at emc.com) wrote:
>
>> 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.
>
>> 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
>>
>> On Nov 29, 2013, at 1:11 PM, Sayaji Patil <sayaji15 at gmail.com> wrote:
>>>
>>> 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^[[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^[[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^[[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
>>>
>> 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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>>
>>
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>
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