Error: 'Connection' object has no attribute 'nonetype'

[smirlach]

Hello,

i'm trying to gather the software version from an Aruba OS-CX device with Ansible and get the error "Unexpected failure during module execution: 'Connection' object has no attribute 'nonetype'".

My Ansible setup:

❯ ansible --version
ansible [core 2.14.2]
  config file = /home/<myuser>/repos/test/ansible.cfg
  configured module search path = ['/home/<myuser>/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible
  ansible collection location = /home/<myuser>/.ansible/collections:/usr/share/ansible/collections
  executable location = /home/<myuser>/.pyenv/versions/3.9.15/bin/ansible
  python version = 3.9.15 (main, Nov 16 2022, 14:25:35) [GCC 9.4.0] (/home/<myuser>/.pyenv/versions/3.9.15/bin/python3)
  jinja version = 3.1.2
  libyaml = True

The version of the Ansible collection:

❯ ansible-galaxy collection list arubanetworks.aoscx

# /home/<myuser>/.ansible/collections/ansible_collections
Collection          Version
------------------- -------
arubanetworks.aoscx 4.0.3

The Ansible inventory I'm using:

all:
  children:
    ungrouped:
      hosts:
        myhost:
          ansible_acx_no_proxy: true
          ansible_aoscx_use_proxy: false
          ansible_aoscx_validate_certs: false
          ansible_connection: arubanetworks.aoscx.aoscx
          ansible_host: myhost.test
          ansible_network_os: arubanetworks.aoscx.aoscx
          ansible_password: <password>
          ansible_user: <user>

My Ansible playbook:

---
- hosts: all
  gather_facts: False
  collections:
    - arubanetworks.aoscx
  vars:
    ansible_python_interpreter: /usr/bin/python3
  tasks:

  - name: Gather facts
    aoscx_facts:
      gather_subset: software_version
    register: aruba_facts

  - name: debug
    debug:
      msg: 
        - "{{ aruba_facts }}"

The full verbose (-vvv) error output:

❯ ansible-playbook -i ansibletest/hosts_aruba.yaml ansibletest/play.yml --vault-password-file=/tmp/unlock -vvv
ansible-playbook [core 2.14.2]
  config file = /home/<myuser>/repos/test/ansible.cfg
  configured module search path = ['/home/<myuser>/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible
  ansible collection location = /home/<myuser>/.ansible/collections:/usr/share/ansible/collections
  executable location = /home/<myuser>/.pyenv/versions/3.9.15/bin/ansible-playbook
  python version = 3.9.15 (main, Nov 16 2022, 14:25:35) [GCC 9.4.0] (/home/<myuser>/.pyenv/versions/3.9.15/bin/python3)
  jinja version = 3.1.2
  libyaml = True
Using /home/<myuser>/repos/test/ansible.cfg as config file
host_list declined parsing /home/<myuser>/repos/test/ansibletest/hosts_aruba.yaml as it did not pass its verify_file() method
script declined parsing /home/<myuser>/repos/test/ansibletest/hosts_aruba.yaml as it did not pass its verify_file() method
Parsed /home/<myuser>/repos/test/ansibletest/hosts_aruba.yaml inventory source with yaml plugin
Skipping callback 'default', as we already have a stdout callback.
Skipping callback 'minimal', as we already have a stdout callback.
Skipping callback 'oneline', as we already have a stdout callback.

PLAYBOOK: play.yml *************************************************************************************************************************************************************
1 plays in ansibletest/play.yml

PLAY [all] *********************************************************************************************************************************************************************

TASK [Gather facts] ************************************************************************************************************************************************************
task path: /home/<myuser>/repos/test/ansibletest/play.yml:8
The full traceback is:
Traceback (most recent call last):
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/plugins/connection/__init__.py", line 293, in __getattr__
    return self.__dict__[name]
KeyError: '_nonetype'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/executor/task_executor.py", line 1001, in _set_plugin_options
    plugin = getattr(self._connection, '_%s' % plugin_type)
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/plugins/connection/__init__.py", line 301, in __getattr__
    raise AttributeError("'%s' object has no attribute '%s'" % (self.__class__.__name__, name))
AttributeError: 'Connection' object has no attribute '_nonetype'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/plugins/connection/__init__.py", line 293, in __getattr__
    return self.__dict__[name]
KeyError: 'nonetype'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/executor/task_executor.py", line 158, in run
    res = self._execute()
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/executor/task_executor.py", line 556, in _execute
    plugin_vars = self._set_connection_options(cvars, templar)
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/executor/task_executor.py", line 1083, in _set_connection_options
    varnames.extend(self._set_plugin_options(plugin_type, variables, templar, task_keys))
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/executor/task_executor.py", line 1004, in _set_plugin_options
    plugin = getattr(self._connection, plugin_type)
  File "/home/<myuser>/.pyenv/versions/3.9.15/lib/python3.9/site-packages/ansible/plugins/connection/__init__.py", line 301, in __getattr__
    raise AttributeError("'%s' object has no attribute '%s'" % (self.__class__.__name__, name))
AttributeError: 'Connection' object has no attribute 'nonetype'
fatal: [myhost]: FAILED! => {
    "msg": "Unexpected failure during module execution: 'Connection' object has no attribute 'nonetype'",
    "stdout": ""
}

One the one hand this seems to be an issue with Ansible itself https://github.com/ansible/ansible/issues/79371 with a fix already proposed but not implemented. On the other hand the issue also states that it is a good idea to set the _sub_plugin value for connection plugins.

So is the issue with my Ansible setup? Or is that _sub_plugin not implemented for this collection?

[tchiapuziowong]

Hi @smirlach - We can look into the _sub_plugin you referenced, in the meantime could you also try removing your declaration of ansible_python_interpreter: /usr/bin/python3 and updating your collection version? Since you're using a venv AND it's already python3 you should need that variable set, please let us know if the issue persists. in the meantime I'll work with development on recreating the issue

[smirlach]

Hi @tchiapuziowong - thanks for the hint. It's working now :+1: I tried installing the newest collection version before but unfortunately i had to overwrite it with --force now it installed the current version.

[tchiapuziowong]

Great to hear!