PyATS Connection Freeze

PeterAnsell — Sun, 19 May 2019 09:49:53 GMT

Hey,

Im trying to get a handle on pyats and explore what it might be able to do and i have run into an interesting problem straight out of the gate. This one is gonna sound pretty basic but thats where i am at with this sort of thing so here goes.

when running any of the pyats sample scripts using a testbed modified to match my own devices i get the following errors. If i use the ipyats to connect to the devnet testbed from my local machone it works just fine. Im not really sure how to troubleshoot this further so i turn to the DevNet community for suggestions. For the record i can connect via ssh to the device from this device normally.

From playing in the testbed it should move on to configuring an automation friendly terminal, setting term len, width etc but it just hangs here until it times out

Cheers

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Error Snippet

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In [2]: rr.connect()
[2019-05-19 19:37:51,671] +++ ios1 logfile /tmp/ios1-cli-20190519T193751669.log +++
[2019-05-19 19:37:51,672] +++ Unicon plugin ios +++
[2019-05-19 19:37:51,677] +++ connection to spawn: ssh -l <username> <ip address>, id: 4663560008 +++
[2019-05-19 19:37:51,678] connection to ios1

Password:
Last switch-over Wed Sep 26 23:43:20 2018: 33 weeks, 3 days, 19 hours, 54 minutes ago

RP/0/RSP0/CPU0:<device_hostname>#---------------------------------------------------------------------------
TimeoutError Traceback (most recent call last)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/statemachine/statemachine.cpython-36m-darwin.so in unicon.statemachine.statemachine.StateMachine.go_to()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/statemachine/statetransition.cpython-36m-darwin.so in unicon.statemachine.statetransition.AnyStateTransition.do_transitions()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/eal/dialogs.cpython-36m-darwin.so in unicon.eal.dialogs.Dialog.process()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/eal/dialog_processor.cpython-36m-darwin.so in unicon.eal.dialog_processor.AlarmBasedDialogProcessor.process()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/eal/dialog_processor.cpython-36m-darwin.so in unicon.eal.dialog_processor.AlarmBasedDialogProcessor.expect_eval_statements()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/eal/backend/pty_backend.cpython-36m-darwin.so in unicon.eal.backend.pty_backend.RawSpawn.read_update_buffer()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/eal/backend/pty_backend.cpython-36m-darwin.so in unicon.eal.backend.pty_backend.RawPtySpawn.is_readable()

The above exception was the direct cause of the following exception:

StateMachineError Traceback (most recent call last)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/bases/connection.cpython-36m-darwin.so in unicon.bases.connection.Connection.connect()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/bases/routers/connection_provider.cpython-36m-darwin.so in unicon.bases.routers.connection_provider.BaseSingleRpConnectionProvider.connect()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/statemachine/statemachine.cpython-36m-darwin.so in unicon.statemachine.statemachine.StateMachine.go_to()

StateMachineError: Failed while bringing device to "any" state

The above exception was the direct cause of the following exception:

ConnectionError Traceback (most recent call last)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/ipyats/main.py in <module>
----> 1 rr.connect()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyats/connections/manager.cpython-36m-darwin.so in pyats.connections.manager.ConnectionManager.connect()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/unicon/bases/connection.cpython-36m-darwin.so in unicon.bases.connection.Connection.connect()

ConnectionError: failed to connect to ios1

Re: PyATS Connection Freeze

sjhloco — Sun, 18 Aug 2019 18:19:28 GMT

Hey,

Guessing you probably worked it out by now, the device name in your testbed file must be an exact match of the hostname of the device. Unfortunately is not very clear in peoples how-to-guides or the DevNet videos, but is in the unicon documentation.

Thanks

Re: PyATS Connection Freeze

PeterAnsell — Sun, 18 Aug 2019 23:12:04 GMT

Yeah figured it out in the end thanks. This was it.

topic Re: PyATS Connection Freeze in Controllers

PyATS Connection Freeze

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Re: PyATS Connection Freeze