Open Stack

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

On Fri, Nov 29, 2013 at 8:11 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
>
>
>
>
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