docker / docker/docker-py

404 on containers.create for valid images

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Description

tested under:

Python 3.6.5
Docker version 17.12.1-ce, build 7390fc6
docker 3.4.1

and

Python 3.7.0
Docker version 18.06.0-ce, build 0ffa825
docker 3.4.1

When running

>>> import docker as dockerpy
>>> _client = dockerpy.from_env()
>>> container = _client.containers.create(image='tomochain/infra-telegraf:devnet', name='telegraf')
Traceback (most recent call last):
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/docker/api/client.py", line 229, in _raise_for_status
    response.raise_for_status()
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/requests/models.py", line 939, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 404 Client Error: Not Found for url: http+docker://localhost/v1.35/containers/create?name=telegraf

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/docker/models/containers.py", line 824, in create
    resp = self.client.api.create_container(**create_kwargs)
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/docker/api/container.py", line 411, in create_container
    return self.create_container_from_config(config, name)
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/docker/api/container.py", line 422, in create_container_from_config
    return self._result(res, True)
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/docker/api/client.py", line 235, in _result
    self._raise_for_status(response)
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/docker/api/client.py", line 231, in _raise_for_status
    raise create_api_error_from_http_exception(e)
  File "/Users/etienne/Library/Caches/pypoetry/virtualenvs/tmn-py3.7/lib/python3.7/site-packages/docker/errors.py", line 31, in create_api_error_from_http_exception
    raise cls(e, response=response, explanation=explanation)
docker.errors.ImageNotFound: 404 Client Error: Not Found ("No such image: tomochain/infra-telegraf:devnet")

If I use the docker client:

➜ docker pull tomochain/infra-telegraf:devnet
devnet: Pulling from tomochain/infra-telegraf
55cbf04beb70: Downloading [===============>                                   ]  14.27MB/45.31MB
1607093a898c: Downloading [=====================>                             ]  4.586MB/10.74MB
9a8ea045c926: Download complete
9dbf507f8efa: Downloading [==>                                                ]  817.9kB/15.96MB
b7bbc4db97cd: Waiting
b8898b2dd4b3: Waiting
595512eec936: Waiting
d4bd43885499: Waiting

Works fine. And after that there will be no exceptions as the images are already present locally
It also works with the images.pull function:

>>> client.images.pull('tomochain/infra-telegraf:devnet')
<Image: 'tomochain/infra-telegraf:devnet'>

Contributor guide

Open the contributing guide

First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the failing containers.create call with the listed Python, Docker Engine, and docker 3.4.1 versions, then compare it with the working images.pull path. Trace the request through docker/api/container.py, docker/api/client.py, and docker/errors.py; done means the cause of the 404 is identified and containers.create behaves correctly for the reported image case.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, python
Domain
api, devops
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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