ERR in rest api logs; TypeError: 'NoneType' object is unsubscriptable

[Anastasia Palkina]

"build_id": "2014-06-05_15-25-50",
"mirantis": "yes",
"build_number": "344",
"nailgun_sha": "a828d6b7610f872980d5a2113774f1cda6f6810b",
"ostf_sha": "2b7b39e4b6ea89751b65171f24a8e80b5cac56aa",
"fuelmain_sha": "9964da7dec34d3100419c1c77c8f5235d8e30f14",
"astute_sha": "55df06b2e84fa5d71a1cc0e78dbccab5db29d968",
"release": "4.1B",
"fuellib_sha": "3511461a2b529619a787a6306441d9039699e71d"

There are errors in REST API logs:

2014-06-06 11:59:27 ERROR

[7f392f5fe700] (logger) Response code '500 Internal Server Error' for POST /api/nodes/ from 10.20.0.156:33189

2014-06-06 11:59:27 ERROR

[7f392f5fe700] (logger) Traceback (most recent call last):
  File "/opt/nailgun/lib/python2.6/site-packages/web/application.py", line 239, in process
    return self.handle()
  File "/opt/nailgun/lib/python2.6/site-packages/web/application.py", line 230, in handle
    return self._delegate(fn, self.fvars, args)
  File "/opt/nailgun/lib/python2.6/site-packages/web/application.py", line 420, in _delegate
    return handle_class(cls)
  File "/opt/nailgun/lib/python2.6/site-packages/web/application.py", line 396, in handle_class
    return tocall(*args)
  File "<string>", line 2, in POST
  File "/opt/nailgun/lib/python2.6/site-packages/nailgun/api/handlers/base.py", line 55, in content_json
    data = func(*args, **kwargs)
  File "/opt/nailgun/lib/python2.6/site-packages/nailgun/api/handlers/node.py", line 228, in POST
    name="Untitled (%s)" % data['mac'][-5:],
TypeError: 'NoneType' object is unsubscriptable

[Ryan Moe (rmoe)]

This traceback is because one of the discovered nodes (10.20.0.156) passed no interface info to the agent API handler.

[Dmitry Borodaenko (angdraug)]

Please run the following command on the problematic node and report the output:
ruby -r ohai/system -e 'os=Ohai::System.new; os.all_plugins; puts os["network"]["interfaces"].inspect'

[Dmitry Borodaenko (angdraug)]

Looks like at one point (2014-06-06 11:59:27 in ) ohai returned an empty list of network interfaces, but on the next run it recovered and returned a full list. Now the above command also returns the full data.

[Dmitry Borodaenko (angdraug)]

above should read: 2014-06-06 11:59:27 in /var/log/nailgun/api.log on master node.

[Dmitry Borodaenko (angdraug)]

Downgrading due to highly intermittent nature of this problem.

Long-term workaround is to validate network data received from ohai, and, if it is empty and there's a non-empty cached data, keep the cache for 3 runs before removing the data no longer reported by ohai.

[Vladimir Kuklin (vkuklin)]

Due to the fact that second run of agent was successful, this bug should be considered as medium priority.

[Roman Prykhodchenko (romcheg)]

This hits feature freeze in 6.0. Moving to 6.1

[Vladimir Sharshov (vsharshov)]

Moving to 7.0

[Vladimir Sharshov (vsharshov)]

Very old bug. No reproducing. Mark as Invalid. Feel free to open it with new logs.