Issue with starting celery: "invalid width %r (must be > 0)"

[anandsourabh]

I am using the base posthog docker image. The celery worker threads fail to start with the below error due to which the pre-flight checks are not completing successfully.

Has anyone else encountered this issue? There are many threads talking of setting docker environment variables etc.
Just wanted to check if there is a prescribed solution from the Posthog team.

Traceback (most recent call last):
  File "/usr/local/bin/celery", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.8/site-packages/celery/__main__.py", line 16, in main
    _main()
  File "/usr/local/lib/python3.8/site-packages/celery/bin/celery.py", line 322, in main
    cmd.execute_from_commandline(argv)
  File "/usr/local/lib/python3.8/site-packages/celery/bin/celery.py", line 495, in execute_from_commandline
    super(CeleryCommand, self).execute_from_commandline(argv)))
  File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", line 305, in execute_from_commandline
    return self.handle_argv(self.prog_name, argv[1:])
  File "/usr/local/lib/python3.8/site-packages/celery/bin/celery.py", line 487, in handle_argv
    return self.execute(command, argv)
  File "/usr/local/lib/python3.8/site-packages/celery/bin/celery.py", line 415, in execute
    return cls(
  File "/usr/local/lib/python3.8/site-packages/celery/bin/worker.py", line 221, in run_from_argv
    *self.parse_options(prog_name, argv, command))
  File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", line 428, in parse_options
    self.parser = self.create_parser(prog_name, command)
  File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", line 440, in create_parser
    description=self._format_description(self.description),
  File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", line 462, in _format_description
    text.fill_paragraphs(text.dedent(description), width))
  File "/usr/local/lib/python3.8/site-packages/celery/utils/text.py", line 58, in fill_paragraphs
    return sep.join(fill(p, width) for p in s.split(sep))
  File "/usr/local/lib/python3.8/site-packages/celery/utils/text.py", line 58, in <genexpr>
    return sep.join(fill(p, width) for p in s.split(sep))
  File "/usr/local/lib/python3.8/textwrap.py", line 391, in fill
    return w.fill(text)
  File "/usr/local/lib/python3.8/textwrap.py", line 363, in fill
    return "\n".join(self.wrap(text))
  File "/usr/local/lib/python3.8/textwrap.py", line 354, in wrap
    return self._wrap_chunks(chunks)
  File "/usr/local/lib/python3.8/textwrap.py", line 248, in _wrap_chunks
    raise ValueError("invalid width %r (must be > 0)" % self.width)
ValueError: invalid width -2 (must be > 0)
^[[2K^[[1G^[[2m[1/4]^[[22m Resolving packages...

[Twixes]

Unfortunately it looks like a very very system specific issue regarding terminal size (looking at celery/celery#5761). We haven't seen this before, but setting shell var COLUMNS should fix it.

[anandsourabh]

This was fixed by adding COLUMS shell var, more of a doker thing. Thank you.