Munki Enroll Error

[AndersTao]

Munki enrolment package fails on postinstall

The error is in the postinstall, with a error 500 from the server urllib2.HTTPError: HTTP Error 500: Internal Server Error

Here is the full output

$ sudo ./postinstall.py 
Traceback (most recent call last):
  File "/Users/ladmin/Desktop/postinstall 2.py", line 95, in <module>
    token = enroll()
  File "/Users/ladmin/Desktop/postinstall 2.py", line 37, in enroll
    resp = urllib2.urlopen(req, data=data, context=ctx)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 437, in open
    response = meth(req, response)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 550, in http_response
    'http', request, response, code, msg, hdrs)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 475, in error
    return self._call_chain(*args)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 409, in _call_chain
    result = func(*args)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 558, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 500: Internal Server Error

nginx/error.log

2018/07/08 14:22:35 [warn] 1718#1718: *5382 an upstream response is buffered to a temporary file /var/cache/nginx/proxy_temp/4/18/0000000184 while reading upstream, client: 210.XXX.17.XXX, server: zentral.domain.com, request: "POST /munki/enroll/ HTTP/1.1", upstream: "http://127.0.0.1:8000/munki/enroll/", host: "zentral.domain.com"

[np5]

Could you post here the django logs, please ?

[AndersTao]

Jul 09 08:40:26 zentral.domain.com gunicorn[1379]: 2018-07-09 06:40:26,871 PID3786 exception ERROR Internal Server Error: /munki/enroll/
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]: Traceback (most recent call last):
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/home/zentral/app/venv/lib/python3.5/site-packages/django/core/handlers/exception.py", line 42, in inner
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     response = get_response(request)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/home/zentral/app/venv/lib/python3.5/site-packages/django/core/handlers/base.py", line 187, in _get_response
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     response = self.process_exception_by_middleware(e, request)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/home/zentral/app/venv/lib/python3.5/site-packages/django/core/handlers/base.py", line 185, in _get_response
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     response = wrapped_callback(request, *callback_args, **callback_kwargs)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/usr/lib/python3.5/contextlib.py", line 30, in inner
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     return func(*args, **kwds)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/home/zentral/app/venv/lib/python3.5/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     return view_func(*args, **kwargs)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/home/zentral/app/venv/lib/python3.5/site-packages/django/views/generic/base.py", line 68, in view
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     return self.dispatch(request, *args, **kwargs)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/home/zentral/app/venv/lib/python3.5/site-packages/django/views/generic/base.py", line 88, in dispatch
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     return handler(request, *args, **kwargs)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/home/zentral/app/releases/2018.07.05-15.56.05-master-3b683f/zentral/contrib/munki/views.py", line 91, in post
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     request_json = json.load(request)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/usr/lib/python3.5/json/__init__.py", line 268, in load
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:   File "/usr/lib/python3.5/json/__init__.py", line 312, in loads
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]:     s.__class__.__name__))
Jul 09 08:40:26 zentral.domain.com gunicorn[1379]: TypeError: the JSON object must be str, not 'bytes'

[np5]

Yes, that's what I thought. Same issue as the santa enrollment one. Fixed in a000fb3. We don't get these errors in our environments.

[AndersTao]

Yep, it is fixet now 👏🏼 Thanks again @np5

[np5]

I have found the issue. We run python 3.6 on our prod servers and in the docker setup. With python 3.6, you can pass a file opened in binary mode to json.load, not with python 3.5, which is the standard on ubuntu 16.04, used for the Zentral all-in-one images.

[AndersTao]

headmin did mention the use of python3.6 earlier, but I did not follow up after your first fix..
Any requmentet way to upgrade?, without breaking everything :)

[np5]

python 3.6 is not in the standard ubuntu 16.04 and debian stable distributions. As much as I would love to be able to use only the latest version, this requirement is not really reasonable.