k8s module - TypeError: argument of type 'NoneType' is not iterable

[Jason Gilfoil]

Hello,

Trying to apply a yaml definition using the k8s module to my cluster. I've never used this module before so i'm trying to work out if i'm just doing something wrong or is this a bug?

playbook:

---

- hosts: kube-master[0]
  become: no
  tasks:
    - name: Install simple app
      k8s:
        definition: "{{ lookup('file', 'redis-master-deployment.yaml') }}"
        kubeconfig: .kube/config-dev
      delegate_to: localhost

redis-master-deployment.yaml comes from https://k8s.io/examples/application/guestbook/redis-master-deployment.yaml

Error i'm getting:

An exception occurred during task execution. To see the full traceback, use -vvv. The error was: TypeError: argument of type 'NoneType' is not iterable

fatal: [core01-dev -> localhost]: FAILED! => changed=false

  module_stderr: |-

    Traceback (most recent call last):

      File "<stdin>", line 114, in <module>

      File "<stdin>", line 106, in _ansiballz_main

      File "<stdin>", line 49, in invoke_module

      File "/usr/lib/python3.5/imp.py", line 234, in load_module

        return load_source(name, filename, file)

      File "/usr/lib/python3.5/imp.py", line 170, in load_source

        module = _exec(spec, sys.modules[name])

      File "<frozen importlib._bootstrap>", line 626, in _exec

      File "<frozen importlib._bootstrap_external>", line 665, in exec_module

      File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed

      File "/tmp/ansible_k8s_payload__jlk6464/__main__.py", line 258, in <module>

      File "/tmp/ansible_k8s_payload__jlk6464/__main__.py", line 254, in main

      File "/tmp/ansible_k8s_payload__jlk6464/ansible_k8s_payload.zip/ansible/module_utils/k8s/raw.py", line 154, in execute_module

      File "/tmp/ansible_k8s_payload__jlk6464/ansible_k8s_payload.zip/ansible/module_utils/k8s/common.py", line 180, in get_api_client

      File "/home/vagrant/.local/lib/python3.5/site-packages/kubernetes/config/kube_config.py", line 645, in load_kube_config

        persist_config=persist_config)

      File "/home/vagrant/.local/lib/python3.5/site-packages/kubernetes/config/kube_config.py", line 613, in _get_kube_config_loader_for_yaml_file

        **kwargs)

      File "/home/vagrant/.local/lib/python3.5/site-packages/kubernetes/config/kube_config.py", line 153, in __init__

        self.set_active_context(active_context)

      File "/home/vagrant/.local/lib/python3.5/site-packages/kubernetes/config/kube_config.py", line 173, in set_active_context

        context_name = self._config['current-context']

      File "/home/vagrant/.local/lib/python3.5/site-packages/kubernetes/config/kube_config.py", line 495, in __getitem__

        v = self.safe_get(key)

      File "/home/vagrant/.local/lib/python3.5/site-packages/kubernetes/config/kube_config.py", line 491, in safe_get

        key in self.value):

    TypeError: argument of type 'NoneType' is not iterable

  module_stdout: ''

  msg: |-

    MODULE FAILURE

    See stdout/stderr for the exact error

  rc: 1

Versions:

vagrant@ansible:/vagrant$ ansible --version

ansible 2.8.8

  config file = /vagrant/ansible.cfg

  configured module search path = ['/vagrant/library']

  ansible python module location = /home/vagrant/.local/lib/python3.5/site-packages/ansible

  executable location = /home/vagrant/.local/bin/ansible

  python version = 3.5.2 (default, Oct  8 2019, 13:06:37) [GCC 5.4.0 20160609]

vagrant@ansible:/vagrant$ python

Python 3.5.2 (default, Oct  8 2019, 13:06:37)

[GCC 5.4.0 20160609] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> import yaml

>>> yaml.__version__

'5.3'

>>> import openshift

>>> openshift.__version__

'0.10.1'

Thanks!

[Jason Gilfoil]

I figured it out. I had the path to my kubeconfig set wrong and i was missing 'context' and namespace parameters. What finally worked:

- hosts: kube-master[0]

  become: no

  tasks:

    - name: Install simple app

      k8s:

        definition: '{{ item }}'

        kubeconfig: ~/.kube/config-dev

        context: dev

        namespace: default

        state: absent

      with_items: '{{ lookup("url", "https://k8s.io/examples/application/guestbook/redis-master-deployment.yaml", split_lines=False) | from_yaml_all | list }}'

      when: item is not none

      delegate_to: localhost