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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
FABNetv4Ext network service requires Net.FABNetv4Ext permission.
If your project doesn’t have this permission, you’ll need to request it via ticket.
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
@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'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
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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