Authentication failure while enabling public IPv4

[Sankalpa Timilsina]

Hi,

I am following the FABnet IPv4Ext Network creation to enable external connectivity.

Recently, I encountered authentication failure while trying to change the public IP.

Do I need to do any authentication to obtain the public IP? Thanks.

Regards,

Sankalpa Timilsina

[yoursunny]

FABNetv4Ext network service requires Net.FABNetv4Ext permission.

If your project doesn’t have this permission, you’ll need to request it via ticket.

[yoursunny]

I tried my usual script of acquiring public IPv4 address, operating on behalf of a project that has the Net.FABNetv4Ext permission.
https://github.com/yoursunny/fabric/tree/5d434c3117314730a9ab38ffd4eefcab70f13779/ipv4 , see v4pub.py and demo-v4pub.py.
It works correctly and can acquire public IPv4 addresses for nodes that need it.

However, I’m having trouble with FABRIC’s jupyter-examples.
https://github.com/fabric-testbed/jupyter-examples/blob/rel1.4.5/fabric_examples/beta_functionality/rel1.4/create_l3network_fabnet_ext.ipynb
(I commented out the UKY line)

For both networks defined in the notebook, get_subnet() returns None.
Consequently, “Update Network Service – Enable/Disable Public IP Addresses” failed with error:

TypeError: 'NoneType' object is not subscriptable

[Sankalpa Timilsina]

@Junxiao, yes the project has the permissions.

Here’s the complete log. This is due to the error @Junxiao pointed out i.e. get_subnet() returning None.

python fileserver.py
Configuring fabric environment....
Configuring slice parameters....
fileserver@1683823224
Creating slice....
Waiting for slice .......... Slice state: StableOK
Waiting for ssh in slice ................................................................................Running post boot config ... Done!
Modifying the slice to request public IP...
Waiting for slice ... Slice state: ModifyOK
Waiting for ssh in slice ......................................................................................Running post boot config ... Done!
ssh ${Username}@${Management IP}
Enabling the public IP...
Traceback (most recent call last):
File "/home/fabric/work/my_config/fabric-trace/fileserver.py", line 78, in <module>
v4pub.enable(slice)
File "/home/fabric/work/my_config/fabric-trace/v4pub.py", line 92, in enable
enable_on_network(net)
File "/home/fabric/work/my_config/fabric-trace/v4pub.py", line 86, in enable_on_network
thread.result()
File "/opt/conda/lib/python3.9/concurrent/futures/_base.py", line 445, in result
return self.__get_result()
File "/opt/conda/lib/python3.9/concurrent/futures/_base.py", line 390, in __get_result
raise self._exception
File "/opt/conda/lib/python3.9/concurrent/futures/thread.py", line 52, in run
result = self.fn(*self.args, **self.kwargs)
File "/opt/conda/lib/python3.9/site-packages/fabrictestbed_extensions/fablib/node.py", line 1367, in execute
raise e
File "/opt/conda/lib/python3.9/site-packages/fabrictestbed_extensions/fablib/node.py", line 1226, in execute
bastion.connect(
File "/opt/conda/lib/python3.9/site-packages/paramiko/client.py", line 459, in connect
self._auth(
File "/opt/conda/lib/python3.9/site-packages/paramiko/client.py", line 790, in _auth
raise saved_exception
File "/opt/conda/lib/python3.9/site-packages/paramiko/client.py", line 766, in _auth
self._transport.auth_publickey(username, key)
File "/opt/conda/lib/python3.9/site-packages/paramiko/transport.py", line 1640, in auth_publickey
return self.auth_handler.wait_for_response(my_event)
File "/opt/conda/lib/python3.9/site-packages/paramiko/auth_handler.py", line 259, in wait_for_response
raise e
paramiko.ssh_exception.AuthenticationException: Authentication failed.
Exception ignored in: <function ApiClient.__del__ at 0x7fc893767700>
Traceback (most recent call last):
File "/opt/conda/lib/python3.9/site-packages/fabric_cm/credmgr/swagger_client/api_client.py", line 78, in __del__
File "/opt/conda/lib/python3.9/multiprocessing/pool.py", line 645, in close
AttributeError: 'NoneType' object has no attribute 'debug'
Exception ignored in: <function Pool.__del__ at 0x7fc89382c1f0>
Traceback (most recent call last):
File "/opt/conda/lib/python3.9/multiprocessing/pool.py", line 268, in __del__
File "/opt/conda/lib/python3.9/multiprocessing/queues.py", line 372, in put
AttributeError: 'NoneType' object has no attribute 'dumps'
Exception ignored in: <function ApiClient.__del__ at 0x7fc89377c700>
Traceback (most recent call last):
File "/opt/conda/lib/python3.9/site-packages/fabric_cf/orchestrator/swagger_client/api_client.py", line 78, in __del__
File "/opt/conda/lib/python3.9/multiprocessing/pool.py", line 645, in close
AttributeError: 'NoneType' object has no attribute 'debug'
Exception ignored in: <function Pool.__del__ at 0x7fc89382c1f0>
Traceback (most recent call last):
File "/opt/conda/lib/python3.9/multiprocessing/pool.py", line 268, in __del__
File "/opt/conda/lib/python3.9/multiprocessing/queues.py", line 372, in put
AttributeError: 'NoneType' object has no attribute 'dumps'

• This reply was modified 11 months, 2 weeks ago by Sankalpa Timilsina.
• This reply was modified 11 months, 2 weeks ago by Sankalpa Timilsina.

[yoursunny]

paramiko.ssh_exception.AuthenticationException: Authentication failed.

This suggests that fablib cannot connect to either the bastion or the node via SSH.
It has nothing to do with FABNetv4Ext.

ssh ${Username}@${Management IP}

This suggests that your fabric_rc file is outdated.
You need to rerun the configure.ipynb notebook.

See also: https://learn.fabric-testbed.net/forums/topic/broken-get_ssh_command/#post-3693

• This reply was modified 11 months, 2 weeks ago by yoursunny.

[Paul Ruth]

Komal pushed an update to that beta notebook.  Check here: https://github.com/fabric-testbed/jupyter-examples/tree/master/fabric_examples/beta_functionality/rel1.4

I think the change in actually in the “plugins.py” file.

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