Hi Dennis, On Wed, Apr 02, at 1:28 pm Qin, Xiaohong (xiaohong....@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:kmest...@cisco.com] > Sent: Friday, November 29, 2013 7:57 PM > To: Sayaji Patil > Cc: <openstack@lists.openstack.org> > Subject: Re: [Openstack] Error in ml2 with cisco_nexus driver > > On Nov 29, 2013, at 1:11 PM, Sayaji Patil <sayaj...@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@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 > >> >> >> _______________________________________________ >> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
