[Openstack] Error in ml2 with cisco_nexus driver
Qin, Xiaohong
Xiaohong.Qin at emc.com
Thu Apr 3 21:20:53 UTC 2014
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
On Wed, Apr 02, at 5:15 pm, Qin, Xiaohong wrote:
> 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?
>From my own localrc:
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.
>
> 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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>>
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