Comment 8 for bug 1957824

We hit this again with 3.3 stable

  File "/var/lib/juju/agents/unit-kubeapi-load-balancer-0/charm/reactive/nginx.py", line 11, in <module>
    config = hookenv.config()
  File "/var/lib/juju/agents/unit-kubeapi-load-balancer-0/.venv/lib/python3.8/site-packages/charmhelpers/core/hookenv.py", line 444, in config
    subprocess.check_output(config_cmd_line).decode('UTF-8'))
  File "/usr/lib/python3.8/subprocess.py", line 415, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.8/subprocess.py", line 516, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['config-get', '--all', '--format=json']' returned non-zero exit status 1.

Artifacts - https://oil-jenkins.canonical.com/artifacts/76af2731-6203-427a-9cd0-3db3071af831/index.html