ncclient timed out when using junos_vlan - networking

Question

I use ansible for network automation.
Usually everything works great, but when trying to create vlan at a particular Juniper switch, I get ncclient timed out while waiting for an rpc reply error. I use junos_vlan module.
I tried extending the timeout periods at ansible.cfg, switching ansible_connection from network_cli to netconf and so on, but none of that helped.
Can something be done from either server's or switch's side?
I read about a guy finding a workaround editing the module file:
Ansible, Juniper CLI commands. Timeout Error?
Can I reach a desired effect with the same approach?
I use ansible 2.8.1 and python 3.6.3. The device has JUNOS 14.1X53-D47.3 firmware.
Any suggestions?
Here is the output of the failure:
TASK [Setting vlan description and giving vlanID] **********************************************
task path: /opt/ansible/roles/juniper/tasks/add_vlan_sw.yml:2
META: noop
META: noop
<x.x.x.x> ESTABLISH NETCONF SSH CONNECTION FOR USER: Ansible on PORT 22 TO x.x.x.x
<x.x.x.x> ESTABLISH LOCAL CONNECTION FOR USER: root
<x.x.x.x> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /root/.ansible/tmp/ansible-local-233162pe2oyh4/ansible-tmp-1565773542.046394-83274056275477 `" && echo ansible-tmp-1565773542.046394-83274056275477="` echo /root/.ansible/tmp/ansible-local-233162pe2oyh4/ansible-tmp-1565773542.046394-83274056275477 `" ) && sleep 0'
Using module file /opt/rh/rh-python36/root/usr/lib/python3.6/site-packages/ansible/modules/network/junos/junos_vlan.py
<x.x.x.x> PUT /root/.ansible/tmp/ansible-local-233162pe2oyh4/tmpyr3gfpgt TO /root/.ansible/tmp/ansible-local-233162pe2oyh4/ansible-tmp-1565773542.046394-83274056275477/AnsiballZ_junos_vlan.py
<x.x.x.x> EXEC /bin/sh -c 'chmod u+x /root/.ansible/tmp/ansible-local-233162pe2oyh4/ansible-tmp-1565773542.046394-83274056275477/ /root/.ansible/tmp/ansible-local-233162pe2oyh4/ansible-tmp-1565773542.046394-83274056275477/AnsiballZ_junos_vlan.py && sleep 0'
<x.x.x.x> EXEC /bin/sh -c '/usr/bin/python /root/.ansible/tmp/ansible-local-233162pe2oyh4/ansible-tmp-1565773542.046394-83274056275477/AnsiballZ_junos_vlan.py && sleep 0'
<x.x.x.x> EXEC /bin/sh -c 'rm -f -r /root/.ansible/tmp/ansible-local-233162pe2oyh4/ansible-tmp-1565773542.046394-83274056275477/ > /dev/null 2>&1 && sleep 0'
The full traceback is:
WARNING: The below traceback may *not* be related to the actual failure.
File "/tmp/ansible_junos_vlan_payload_a3tXYK/ansible_junos_vlan_payload.zip/ansible/module_utils/network/junos/junos.py", line 204, in unlock_configuration
response = conn.unlock()
File "/tmp/ansible_junos_vlan_payload_a3tXYK/ansible_junos_vlan_payload.zip/ansible/module_utils/network/common/netconf.py", line 76, in __rpc__
return self.parse_rpc_error(to_bytes(rpc_error, errors='surrogate_then_replace'))
File "/tmp/ansible_junos_vlan_payload_a3tXYK/ansible_junos_vlan_payload.zip/ansible/module_utils/network/common/netconf.py", line 108, in parse_rpc_error
raise ConnectionError(rpc_error)
fatal: [chi-leafsw06]: FAILED! => {
"changed": false,
"invocation": {
"module_args": {
"active": true,
"aggregate": null,
"description": "Client-100001-dedicated-network",
"filter_input": null,
"filter_output": null,
"host": null,
"interfaces": null,
"l3_interface": null,
"name": "vlan777",
"password": null,
"port": null,
"provider": null,
"ssh_keyfile": null,
"state": "present",
"timeout": null,
"transport": null,
"username": null,
"vlan_id": 777
}
},
"msg": "ncclient timed out while waiting for an rpc reply."
}
Any help would be greatly appreciated.

Answer 1

A guy has offered me a solution in here and I thought this might affect more of you (https://www.reddit.com/r/ansible/comments/cq7joa/help_ncclient_timed_out_while_waiting_for_rpc/)
What helped me was actually a suggestion to reduce the version of ncclient in my Ansible server from 0.6.6 to 0.6.4 and extend timeout values in ansible.cfg to at least 120.
So I am saved. Thanks!