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import copy |
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import ntpath |
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from collections import namedtuple |
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|
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from ..api import APIClient |
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from ..constants import DEFAULT_DATA_CHUNK_SIZE |
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from ..errors import ( |
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ContainerError, |
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DockerException, |
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ImageNotFound, |
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NotFound, |
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create_unexpected_kwargs_error, |
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) |
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from ..types import HostConfig, NetworkingConfig |
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from ..utils import version_gte |
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from .images import Image |
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from .resource import Collection, Model |
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class Container(Model): |
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""" Local representation of a container object. Detailed configuration may |
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be accessed through the :py:attr:`attrs` attribute. Note that local |
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attributes are cached; users may call :py:meth:`reload` to |
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query the Docker daemon for the current properties, causing |
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:py:attr:`attrs` to be refreshed. |
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""" |
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|
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@property |
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def name(self): |
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""" |
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The name of the container. |
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""" |
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if self.attrs.get('Name') is not None: |
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return self.attrs['Name'].lstrip('/') |
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|
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@property |
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def image(self): |
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""" |
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The image of the container. |
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""" |
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image_id = self.attrs.get('ImageID', self.attrs['Image']) |
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if image_id is None: |
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return None |
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return self.client.images.get(image_id.split(':')[1]) |
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|
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@property |
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def labels(self): |
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""" |
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The labels of a container as dictionary. |
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""" |
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try: |
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result = self.attrs['Config'].get('Labels') |
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return result or {} |
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except KeyError as ke: |
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raise DockerException( |
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'Label data is not available for sparse objects. Call reload()' |
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' to retrieve all information' |
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) from ke |
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|
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@property |
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def status(self): |
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""" |
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The status of the container. For example, ``running``, or ``exited``. |
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""" |
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if isinstance(self.attrs['State'], dict): |
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return self.attrs['State']['Status'] |
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return self.attrs['State'] |
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|
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@property |
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def health(self): |
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""" |
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The healthcheck status of the container. |
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|
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For example, ``healthy`, or ``unhealthy`. |
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""" |
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return self.attrs.get('State', {}).get('Health', {}).get('Status', 'unknown') |
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|
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@property |
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def ports(self): |
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""" |
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The ports that the container exposes as a dictionary. |
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""" |
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return self.attrs.get('NetworkSettings', {}).get('Ports', {}) |
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|
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def attach(self, **kwargs): |
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""" |
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Attach to this container. |
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|
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:py:meth:`logs` is a wrapper around this method, which you can |
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use instead if you want to fetch/stream container output without first |
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retrieving the entire backlog. |
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|
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Args: |
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stdout (bool): Include stdout. |
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stderr (bool): Include stderr. |
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stream (bool): Return container output progressively as an iterator |
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of strings, rather than a single string. |
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logs (bool): Include the container's previous output. |
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|
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Returns: |
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By default, the container's output as a single string. |
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|
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If ``stream=True``, an iterator of output strings. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.attach(self.id, **kwargs) |
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|
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def attach_socket(self, **kwargs): |
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""" |
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Like :py:meth:`attach`, but returns the underlying socket-like object |
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for the HTTP request. |
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|
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Args: |
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params (dict): Dictionary of request parameters (e.g. ``stdout``, |
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``stderr``, ``stream``). |
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ws (bool): Use websockets instead of raw HTTP. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.attach_socket(self.id, **kwargs) |
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|
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def commit(self, repository=None, tag=None, **kwargs): |
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""" |
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Commit a container to an image. Similar to the ``docker commit`` |
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command. |
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|
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Args: |
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repository (str): The repository to push the image to |
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tag (str): The tag to push |
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message (str): A commit message |
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author (str): The name of the author |
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pause (bool): Whether to pause the container before committing |
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changes (str): Dockerfile instructions to apply while committing |
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conf (dict): The configuration for the container. See the |
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`Engine API documentation |
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<https://docs.docker.com/reference/api/docker_remote_api/>`_ |
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for full details. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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|
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resp = self.client.api.commit(self.id, repository=repository, tag=tag, |
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**kwargs) |
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return self.client.images.get(resp['Id']) |
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|
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def diff(self): |
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""" |
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Inspect changes on a container's filesystem. |
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|
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Returns: |
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(list) A list of dictionaries containing the attributes `Path` |
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and `Kind`. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.diff(self.id) |
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|
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def exec_run(self, cmd, stdout=True, stderr=True, stdin=False, tty=False, |
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privileged=False, user='', detach=False, stream=False, |
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socket=False, environment=None, workdir=None, demux=False): |
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""" |
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Run a command inside this container. Similar to |
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``docker exec``. |
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|
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Args: |
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cmd (str or list): Command to be executed |
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stdout (bool): Attach to stdout. Default: ``True`` |
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stderr (bool): Attach to stderr. Default: ``True`` |
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stdin (bool): Attach to stdin. Default: ``False`` |
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tty (bool): Allocate a pseudo-TTY. Default: False |
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privileged (bool): Run as privileged. |
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user (str): User to execute command as. Default: root |
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detach (bool): If true, detach from the exec command. |
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Default: False |
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stream (bool): Stream response data. Default: False |
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socket (bool): Return the connection socket to allow custom |
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read/write operations. Default: False |
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environment (dict or list): A dictionary or a list of strings in |
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the following format ``["PASSWORD=xxx"]`` or |
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``{"PASSWORD": "xxx"}``. |
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workdir (str): Path to working directory for this exec session |
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demux (bool): Return stdout and stderr separately |
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|
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Returns: |
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(ExecResult): A tuple of (exit_code, output) |
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exit_code: (int): |
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Exit code for the executed command or ``None`` if |
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either ``stream`` or ``socket`` is ``True``. |
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output: (generator, bytes, or tuple): |
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If ``stream=True``, a generator yielding response chunks. |
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If ``socket=True``, a socket object for the connection. |
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If ``demux=True``, a tuple of two bytes: stdout and stderr. |
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A bytestring containing response data otherwise. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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resp = self.client.api.exec_create( |
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self.id, cmd, stdout=stdout, stderr=stderr, stdin=stdin, tty=tty, |
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privileged=privileged, user=user, environment=environment, |
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workdir=workdir, |
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) |
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exec_output = self.client.api.exec_start( |
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resp['Id'], detach=detach, tty=tty, stream=stream, socket=socket, |
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demux=demux |
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) |
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if socket or stream: |
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return ExecResult(None, exec_output) |
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|
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return ExecResult( |
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self.client.api.exec_inspect(resp['Id'])['ExitCode'], |
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exec_output |
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) |
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|
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def export(self, chunk_size=DEFAULT_DATA_CHUNK_SIZE): |
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""" |
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Export the contents of the container's filesystem as a tar archive. |
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|
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Args: |
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chunk_size (int): The number of bytes returned by each iteration |
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of the generator. If ``None``, data will be streamed as it is |
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received. Default: 2 MB |
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|
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Returns: |
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(str): The filesystem tar archive |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.export(self.id, chunk_size) |
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|
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def get_archive(self, path, chunk_size=DEFAULT_DATA_CHUNK_SIZE, |
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encode_stream=False): |
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""" |
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Retrieve a file or folder from the container in the form of a tar |
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archive. |
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|
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Args: |
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path (str): Path to the file or folder to retrieve |
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chunk_size (int): The number of bytes returned by each iteration |
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of the generator. If ``None``, data will be streamed as it is |
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received. Default: 2 MB |
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encode_stream (bool): Determines if data should be encoded |
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(gzip-compressed) during transmission. Default: False |
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|
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Returns: |
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(tuple): First element is a raw tar data stream. Second element is |
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a dict containing ``stat`` information on the specified ``path``. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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|
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Example: |
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|
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>>> f = open('./sh_bin.tar', 'wb') |
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>>> bits, stat = container.get_archive('/bin/sh') |
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>>> print(stat) |
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{'name': 'sh', 'size': 1075464, 'mode': 493, |
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'mtime': '2018-10-01T15:37:48-07:00', 'linkTarget': ''} |
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>>> for chunk in bits: |
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... f.write(chunk) |
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>>> f.close() |
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""" |
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return self.client.api.get_archive(self.id, path, |
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chunk_size, encode_stream) |
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|
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def kill(self, signal=None): |
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""" |
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Kill or send a signal to the container. |
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|
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Args: |
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signal (str or int): The signal to send. Defaults to ``SIGKILL`` |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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|
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return self.client.api.kill(self.id, signal=signal) |
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|
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def logs(self, **kwargs): |
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""" |
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Get logs from this container. Similar to the ``docker logs`` command. |
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|
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The ``stream`` parameter makes the ``logs`` function return a blocking |
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generator you can iterate over to retrieve log output as it happens. |
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|
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Args: |
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stdout (bool): Get ``STDOUT``. Default ``True`` |
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stderr (bool): Get ``STDERR``. Default ``True`` |
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stream (bool): Stream the response. Default ``False`` |
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timestamps (bool): Show timestamps. Default ``False`` |
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tail (str or int): Output specified number of lines at the end of |
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logs. Either an integer of number of lines or the string |
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``all``. Default ``all`` |
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since (datetime, int, or float): Show logs since a given datetime, |
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integer epoch (in seconds) or float (in nanoseconds) |
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follow (bool): Follow log output. Default ``False`` |
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until (datetime, int, or float): Show logs that occurred before |
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the given datetime, integer epoch (in seconds), or |
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float (in nanoseconds) |
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|
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Returns: |
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(generator of bytes or bytes): Logs from the container. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.logs(self.id, **kwargs) |
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|
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def pause(self): |
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""" |
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Pauses all processes within this container. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.pause(self.id) |
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|
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def put_archive(self, path, data): |
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""" |
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Insert a file or folder in this container using a tar archive as |
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source. |
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|
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Args: |
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path (str): Path inside the container where the file(s) will be |
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extracted. Must exist. |
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data (bytes or stream): tar data to be extracted |
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|
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Returns: |
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(bool): True if the call succeeds. |
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|
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Raises: |
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:py:class:`~docker.errors.APIError` If an error occurs. |
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""" |
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return self.client.api.put_archive(self.id, path, data) |
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|
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def remove(self, **kwargs): |
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""" |
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Remove this container. Similar to the ``docker rm`` command. |
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|
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Args: |
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v (bool): Remove the volumes associated with the container |
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link (bool): Remove the specified link and not the underlying |
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container |
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force (bool): Force the removal of a running container (uses |
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``SIGKILL``) |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.remove_container(self.id, **kwargs) |
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|
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def rename(self, name): |
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""" |
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Rename this container. Similar to the ``docker rename`` command. |
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|
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Args: |
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name (str): New name for the container |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.rename(self.id, name) |
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|
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def resize(self, height, width): |
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""" |
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Resize the tty session. |
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|
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Args: |
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height (int): Height of tty session |
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width (int): Width of tty session |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.resize(self.id, height, width) |
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|
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def restart(self, **kwargs): |
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""" |
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Restart this container. Similar to the ``docker restart`` command. |
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|
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Args: |
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timeout (int): Number of seconds to try to stop for before killing |
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the container. Once killed it will then be restarted. Default |
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is 10 seconds. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.restart(self.id, **kwargs) |
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|
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def start(self, **kwargs): |
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""" |
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Start this container. Similar to the ``docker start`` command, but |
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doesn't support attach options. |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.start(self.id, **kwargs) |
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|
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def stats(self, **kwargs): |
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""" |
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Stream statistics for this container. Similar to the |
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``docker stats`` command. |
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|
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Args: |
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decode (bool): If set to true, stream will be decoded into dicts |
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on the fly. Only applicable if ``stream`` is True. |
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False by default. |
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stream (bool): If set to false, only the current stats will be |
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returned instead of a stream. True by default. |
|
|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.stats(self.id, **kwargs) |
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|
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def stop(self, **kwargs): |
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""" |
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Stops a container. Similar to the ``docker stop`` command. |
|
|
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Args: |
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timeout (int): Timeout in seconds to wait for the container to |
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stop before sending a ``SIGKILL``. Default: 10 |
|
|
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Raises: |
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:py:class:`docker.errors.APIError` |
|
If the server returns an error. |
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""" |
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return self.client.api.stop(self.id, **kwargs) |
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|
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def top(self, **kwargs): |
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""" |
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Display the running processes of the container. |
|
|
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Args: |
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ps_args (str): An optional arguments passed to ps (e.g. ``aux``) |
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|
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Returns: |
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(str): The output of the top |
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|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.top(self.id, **kwargs) |
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|
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def unpause(self): |
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""" |
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Unpause all processes within the container. |
|
|
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Raises: |
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:py:class:`docker.errors.APIError` |
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If the server returns an error. |
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""" |
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return self.client.api.unpause(self.id) |
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|
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def update(self, **kwargs): |
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""" |
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Update resource configuration of the containers. |
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|
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Args: |
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blkio_weight (int): Block IO (relative weight), between 10 and 1000 |
|
cpu_period (int): Limit CPU CFS (Completely Fair Scheduler) period |
|
cpu_quota (int): Limit CPU CFS (Completely Fair Scheduler) quota |
|
cpu_shares (int): CPU shares (relative weight) |
|
cpuset_cpus (str): CPUs in which to allow execution |
|
cpuset_mems (str): MEMs in which to allow execution |
|
mem_limit (int or str): Memory limit |
|
mem_reservation (int or str): Memory soft limit |
|
memswap_limit (int or str): Total memory (memory + swap), -1 to |
|
disable swap |
|
kernel_memory (int or str): Kernel memory limit |
|
restart_policy (dict): Restart policy dictionary |
|
|
|
Returns: |
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(dict): Dictionary containing a ``Warnings`` key. |
|
|
|
Raises: |
|
:py:class:`docker.errors.APIError` |
|
If the server returns an error. |
|
""" |
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return self.client.api.update_container(self.id, **kwargs) |
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|
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def wait(self, **kwargs): |
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""" |
|
Block until the container stops, then return its exit code. Similar to |
|
the ``docker wait`` command. |
|
|
|
Args: |
|
timeout (int): Request timeout |
|
condition (str): Wait until a container state reaches the given |
|
condition, either ``not-running`` (default), ``next-exit``, |
|
or ``removed`` |
|
|
|
Returns: |
|
(dict): The API's response as a Python dictionary, including |
|
the container's exit code under the ``StatusCode`` attribute. |
|
|
|
Raises: |
|
:py:class:`requests.exceptions.ReadTimeout` |
|
If the timeout is exceeded. |
|
:py:class:`docker.errors.APIError` |
|
If the server returns an error. |
|
""" |
|
return self.client.api.wait(self.id, **kwargs) |
|
|
|
|
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class ContainerCollection(Collection): |
|
model = Container |
|
|
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def run(self, image, command=None, stdout=True, stderr=False, |
|
remove=False, **kwargs): |
|
""" |
|
Run a container. By default, it will wait for the container to finish |
|
and return its logs, similar to ``docker run``. |
|
|
|
If the ``detach`` argument is ``True``, it will start the container |
|
and immediately return a :py:class:`Container` object, similar to |
|
``docker run -d``. |
|
|
|
Example: |
|
Run a container and get its output: |
|
|
|
>>> import docker |
|
>>> client = docker.from_env() |
|
>>> client.containers.run('alpine', 'echo hello world') |
|
b'hello world\\n' |
|
|
|
Run a container and detach: |
|
|
|
>>> container = client.containers.run('bfirsh/reticulate-splines', |
|
detach=True) |
|
>>> container.logs() |
|
'Reticulating spline 1...\\nReticulating spline 2...\\n' |
|
|
|
Args: |
|
image (str): The image to run. |
|
command (str or list): The command to run in the container. |
|
auto_remove (bool): enable auto-removal of the container on daemon |
|
side when the container's process exits. |
|
blkio_weight_device: Block IO weight (relative device weight) in |
|
the form of: ``[{"Path": "device_path", "Weight": weight}]``. |
|
blkio_weight: Block IO weight (relative weight), accepts a weight |
|
value between 10 and 1000. |
|
cap_add (list of str): Add kernel capabilities. For example, |
|
``["SYS_ADMIN", "MKNOD"]``. |
|
cap_drop (list of str): Drop kernel capabilities. |
|
cgroup_parent (str): Override the default parent cgroup. |
|
cgroupns (str): Override the default cgroup namespace mode for the |
|
container. One of: |
|
- ``private`` the container runs in its own private cgroup |
|
namespace. |
|
- ``host`` use the host system's cgroup namespace. |
|
cpu_count (int): Number of usable CPUs (Windows only). |
|
cpu_percent (int): Usable percentage of the available CPUs |
|
(Windows only). |
|
cpu_period (int): The length of a CPU period in microseconds. |
|
cpu_quota (int): Microseconds of CPU time that the container can |
|
get in a CPU period. |
|
cpu_rt_period (int): Limit CPU real-time period in microseconds. |
|
cpu_rt_runtime (int): Limit CPU real-time runtime in microseconds. |
|
cpu_shares (int): CPU shares (relative weight). |
|
cpuset_cpus (str): CPUs in which to allow execution (``0-3``, |
|
``0,1``). |
|
cpuset_mems (str): Memory nodes (MEMs) in which to allow execution |
|
(``0-3``, ``0,1``). Only effective on NUMA systems. |
|
detach (bool): Run container in the background and return a |
|
:py:class:`Container` object. |
|
device_cgroup_rules (:py:class:`list`): A list of cgroup rules to |
|
apply to the container. |
|
device_read_bps: Limit read rate (bytes per second) from a device |
|
in the form of: `[{"Path": "device_path", "Rate": rate}]` |
|
device_read_iops: Limit read rate (IO per second) from a device. |
|
device_write_bps: Limit write rate (bytes per second) from a |
|
device. |
|
device_write_iops: Limit write rate (IO per second) from a device. |
|
devices (:py:class:`list`): Expose host devices to the container, |
|
as a list of strings in the form |
|
``<path_on_host>:<path_in_container>:<cgroup_permissions>``. |
|
|
|
For example, ``/dev/sda:/dev/xvda:rwm`` allows the container |
|
to have read-write access to the host's ``/dev/sda`` via a |
|
node named ``/dev/xvda`` inside the container. |
|
device_requests (:py:class:`list`): Expose host resources such as |
|
GPUs to the container, as a list of |
|
:py:class:`docker.types.DeviceRequest` instances. |
|
dns (:py:class:`list`): Set custom DNS servers. |
|
dns_opt (:py:class:`list`): Additional options to be added to the |
|
container's ``resolv.conf`` file. |
|
dns_search (:py:class:`list`): DNS search domains. |
|
domainname (str or list): Set custom DNS search domains. |
|
entrypoint (str or list): The entrypoint for the container. |
|
environment (dict or list): Environment variables to set inside |
|
the container, as a dictionary or a list of strings in the |
|
format ``["SOMEVARIABLE=xxx"]``. |
|
extra_hosts (dict): Additional hostnames to resolve inside the |
|
container, as a mapping of hostname to IP address. |
|
group_add (:py:class:`list`): List of additional group names and/or |
|
IDs that the container process will run as. |
|
healthcheck (dict): Specify a test to perform to check that the |
|
container is healthy. The dict takes the following keys: |
|
|
|
- test (:py:class:`list` or str): Test to perform to determine |
|
container health. Possible values: |
|
|
|
- Empty list: Inherit healthcheck from parent image |
|
- ``["NONE"]``: Disable healthcheck |
|
- ``["CMD", args...]``: exec arguments directly. |
|
- ``["CMD-SHELL", command]``: Run command in the system's |
|
default shell. |
|
|
|
If a string is provided, it will be used as a ``CMD-SHELL`` |
|
command. |
|
- interval (int): The time to wait between checks in |
|
nanoseconds. It should be 0 or at least 1000000 (1 ms). |
|
- timeout (int): The time to wait before considering the check |
|
to have hung. It should be 0 or at least 1000000 (1 ms). |
|
- retries (int): The number of consecutive failures needed to |
|
consider a container as unhealthy. |
|
- start_period (int): Start period for the container to |
|
initialize before starting health-retries countdown in |
|
nanoseconds. It should be 0 or at least 1000000 (1 ms). |
|
hostname (str): Optional hostname for the container. |
|
init (bool): Run an init inside the container that forwards |
|
signals and reaps processes |
|
init_path (str): Path to the docker-init binary |
|
ipc_mode (str): Set the IPC mode for the container. |
|
isolation (str): Isolation technology to use. Default: `None`. |
|
kernel_memory (int or str): Kernel memory limit |
|
labels (dict or list): A dictionary of name-value labels (e.g. |
|
``{"label1": "value1", "label2": "value2"}``) or a list of |
|
names of labels to set with empty values (e.g. |
|
``["label1", "label2"]``) |
|
links (dict): Mapping of links using the |
|
``{'container': 'alias'}`` format. The alias is optional. |
|
Containers declared in this dict will be linked to the new |
|
container using the provided alias. Default: ``None``. |
|
log_config (LogConfig): Logging configuration. |
|
lxc_conf (dict): LXC config. |
|
mac_address (str): MAC address to assign to the container. |
|
mem_limit (int or str): Memory limit. Accepts float values |
|
(which represent the memory limit of the created container in |
|
bytes) or a string with a units identification char |
|
(``100000b``, ``1000k``, ``128m``, ``1g``). If a string is |
|
specified without a units character, bytes are assumed as an |
|
intended unit. |
|
mem_reservation (int or str): Memory soft limit. |
|
mem_swappiness (int): Tune a container's memory swappiness |
|
behavior. Accepts number between 0 and 100. |
|
memswap_limit (str or int): Maximum amount of memory + swap a |
|
container is allowed to consume. |
|
mounts (:py:class:`list`): Specification for mounts to be added to |
|
the container. More powerful alternative to ``volumes``. Each |
|
item in the list is expected to be a |
|
:py:class:`docker.types.Mount` object. |
|
name (str): The name for this container. |
|
nano_cpus (int): CPU quota in units of 1e-9 CPUs. |
|
network (str): Name of the network this container will be connected |
|
to at creation time. You can connect to additional networks |
|
using :py:meth:`Network.connect`. Incompatible with |
|
``network_mode``. |
|
network_disabled (bool): Disable networking. |
|
network_mode (str): One of: |
|
|
|
- ``bridge`` Create a new network stack for the container on |
|
the bridge network. |
|
- ``none`` No networking for this container. |
|
- ``container:<name|id>`` Reuse another container's network |
|
stack. |
|
- ``host`` Use the host network stack. |
|
This mode is incompatible with ``ports``. |
|
|
|
Incompatible with ``network``. |
|
networking_config (Dict[str, EndpointConfig]): |
|
Dictionary of EndpointConfig objects for each container network. |
|
The key is the name of the network. |
|
Defaults to ``None``. |
|
|
|
Used in conjuction with ``network``. |
|
|
|
Incompatible with ``network_mode``. |
|
oom_kill_disable (bool): Whether to disable OOM killer. |
|
oom_score_adj (int): An integer value containing the score given |
|
to the container in order to tune OOM killer preferences. |
|
pid_mode (str): If set to ``host``, use the host PID namespace |
|
inside the container. |
|
pids_limit (int): Tune a container's pids limit. Set ``-1`` for |
|
unlimited. |
|
platform (str): Platform in the format ``os[/arch[/variant]]``. |
|
Only used if the method needs to pull the requested image. |
|
ports (dict): Ports to bind inside the container. |
|
|
|
The keys of the dictionary are the ports to bind inside the |
|
container, either as an integer or a string in the form |
|
``port/protocol``, where the protocol is either ``tcp``, |
|
``udp``, or ``sctp``. |
|
|
|
The values of the dictionary are the corresponding ports to |
|
open on the host, which can be either: |
|
|
|
- The port number, as an integer. For example, |
|
``{'2222/tcp': 3333}`` will expose port 2222 inside the |
|
container as port 3333 on the host. |
|
- ``None``, to assign a random host port. For example, |
|
``{'2222/tcp': None}``. |
|
- A tuple of ``(address, port)`` if you want to specify the |
|
host interface. For example, |
|
``{'1111/tcp': ('127.0.0.1', 1111)}``. |
|
- A list of integers, if you want to bind multiple host ports |
|
to a single container port. For example, |
|
``{'1111/tcp': [1234, 4567]}``. |
|
|
|
Incompatible with ``host`` network mode. |
|
privileged (bool): Give extended privileges to this container. |
|
publish_all_ports (bool): Publish all ports to the host. |
|
read_only (bool): Mount the container's root filesystem as read |
|
only. |
|
remove (bool): Remove the container when it has finished running. |
|
Default: ``False``. |
|
restart_policy (dict): Restart the container when it exits. |
|
Configured as a dictionary with keys: |
|
|
|
- ``Name`` One of ``on-failure``, or ``always``. |
|
- ``MaximumRetryCount`` Number of times to restart the |
|
container on failure. |
|
|
|
For example: |
|
``{"Name": "on-failure", "MaximumRetryCount": 5}`` |
|
|
|
runtime (str): Runtime to use with this container. |
|
security_opt (:py:class:`list`): A list of string values to |
|
customize labels for MLS systems, such as SELinux. |
|
shm_size (str or int): Size of /dev/shm (e.g. ``1G``). |
|
stdin_open (bool): Keep ``STDIN`` open even if not attached. |
|
stdout (bool): Return logs from ``STDOUT`` when ``detach=False``. |
|
Default: ``True``. |
|
stderr (bool): Return logs from ``STDERR`` when ``detach=False``. |
|
Default: ``False``. |
|
stop_signal (str): The stop signal to use to stop the container |
|
(e.g. ``SIGINT``). |
|
storage_opt (dict): Storage driver options per container as a |
|
key-value mapping. |
|
stream (bool): If true and ``detach`` is false, return a log |
|
generator instead of a string. Ignored if ``detach`` is true. |
|
Default: ``False``. |
|
sysctls (dict): Kernel parameters to set in the container. |
|
tmpfs (dict): Temporary filesystems to mount, as a dictionary |
|
mapping a path inside the container to options for that path. |
|
|
|
For example: |
|
|
|
.. code-block:: python |
|
|
|
{ |
|
'/mnt/vol2': '', |
|
'/mnt/vol1': 'size=3G,uid=1000' |
|
} |
|
|
|
tty (bool): Allocate a pseudo-TTY. |
|
ulimits (:py:class:`list`): Ulimits to set inside the container, |
|
as a list of :py:class:`docker.types.Ulimit` instances. |
|
use_config_proxy (bool): If ``True``, and if the docker client |
|
configuration file (``~/.docker/config.json`` by default) |
|
contains a proxy configuration, the corresponding environment |
|
variables will be set in the container being built. |
|
user (str or int): Username or UID to run commands as inside the |
|
container. |
|
userns_mode (str): Sets the user namespace mode for the container |
|
when user namespace remapping option is enabled. Supported |
|
values are: ``host`` |
|
uts_mode (str): Sets the UTS namespace mode for the container. |
|
Supported values are: ``host`` |
|
version (str): The version of the API to use. Set to ``auto`` to |
|
automatically detect the server's version. Default: ``1.35`` |
|
volume_driver (str): The name of a volume driver/plugin. |
|
volumes (dict or list): A dictionary to configure volumes mounted |
|
inside the container. The key is either the host path or a |
|
volume name, and the value is a dictionary with the keys: |
|
|
|
- ``bind`` The path to mount the volume inside the container |
|
- ``mode`` Either ``rw`` to mount the volume read/write, or |
|
``ro`` to mount it read-only. |
|
|
|
For example: |
|
|
|
.. code-block:: python |
|
|
|
{'/home/user1/': {'bind': '/mnt/vol2', 'mode': 'rw'}, |
|
'/var/www': {'bind': '/mnt/vol1', 'mode': 'ro'}} |
|
|
|
Or a list of strings which each one of its elements specifies a |
|
mount volume. |
|
|
|
For example: |
|
|
|
.. code-block:: python |
|
|
|
['/home/user1/:/mnt/vol2','/var/www:/mnt/vol1'] |
|
|
|
volumes_from (:py:class:`list`): List of container names or IDs to |
|
get volumes from. |
|
working_dir (str): Path to the working directory. |
|
|
|
Returns: |
|
The container logs, either ``STDOUT``, ``STDERR``, or both, |
|
depending on the value of the ``stdout`` and ``stderr`` arguments. |
|
|
|
``STDOUT`` and ``STDERR`` may be read only if either ``json-file`` |
|
or ``journald`` logging driver used. Thus, if you are using none of |
|
these drivers, a ``None`` object is returned instead. See the |
|
`Engine API documentation |
|
<https://docs.docker.com/engine/api/v1.30/#operation/ContainerLogs/>`_ |
|
for full details. |
|
|
|
If ``detach`` is ``True``, a :py:class:`Container` object is |
|
returned instead. |
|
|
|
Raises: |
|
:py:class:`docker.errors.ContainerError` |
|
If the container exits with a non-zero exit code and |
|
``detach`` is ``False``. |
|
:py:class:`docker.errors.ImageNotFound` |
|
If the specified image does not exist. |
|
:py:class:`docker.errors.APIError` |
|
If the server returns an error. |
|
""" |
|
if isinstance(image, Image): |
|
image = image.id |
|
stream = kwargs.pop('stream', False) |
|
detach = kwargs.pop('detach', False) |
|
platform = kwargs.get('platform', None) |
|
|
|
if detach and remove: |
|
if version_gte(self.client.api._version, '1.25'): |
|
kwargs["auto_remove"] = True |
|
else: |
|
raise RuntimeError("The options 'detach' and 'remove' cannot " |
|
"be used together in api versions < 1.25.") |
|
|
|
if kwargs.get('network') and kwargs.get('network_mode'): |
|
raise RuntimeError( |
|
'The options "network" and "network_mode" can not be used ' |
|
'together.' |
|
) |
|
|
|
if kwargs.get('networking_config') and not kwargs.get('network'): |
|
raise RuntimeError( |
|
'The option "networking_config" can not be used ' |
|
'without "network".' |
|
) |
|
|
|
try: |
|
container = self.create(image=image, command=command, |
|
detach=detach, **kwargs) |
|
except ImageNotFound: |
|
self.client.images.pull(image, platform=platform) |
|
container = self.create(image=image, command=command, |
|
detach=detach, **kwargs) |
|
|
|
container.start() |
|
|
|
if detach: |
|
return container |
|
|
|
logging_driver = container.attrs['HostConfig']['LogConfig']['Type'] |
|
|
|
out = None |
|
if logging_driver == 'json-file' or logging_driver == 'journald': |
|
out = container.logs( |
|
stdout=stdout, stderr=stderr, stream=True, follow=True |
|
) |
|
|
|
exit_status = container.wait()['StatusCode'] |
|
if exit_status != 0: |
|
out = None |
|
if not kwargs.get('auto_remove'): |
|
out = container.logs(stdout=False, stderr=True) |
|
|
|
if remove: |
|
container.remove() |
|
if exit_status != 0: |
|
raise ContainerError( |
|
container, exit_status, command, image, out |
|
) |
|
|
|
if stream or out is None: |
|
return out |
|
return b''.join(out) |
|
|
|
def create(self, image, command=None, **kwargs): |
|
""" |
|
Create a container without starting it. Similar to ``docker create``. |
|
|
|
Takes the same arguments as :py:meth:`run`, except for ``stdout``, |
|
``stderr``, and ``remove``. |
|
|
|
Returns: |
|
A :py:class:`Container` object. |
|
|
|
Raises: |
|
:py:class:`docker.errors.ImageNotFound` |
|
If the specified image does not exist. |
|
:py:class:`docker.errors.APIError` |
|
If the server returns an error. |
|
""" |
|
if isinstance(image, Image): |
|
image = image.id |
|
kwargs['image'] = image |
|
kwargs['command'] = command |
|
kwargs['version'] = self.client.api._version |
|
create_kwargs = _create_container_args(kwargs) |
|
resp = self.client.api.create_container(**create_kwargs) |
|
return self.get(resp['Id']) |
|
|
|
def get(self, container_id): |
|
""" |
|
Get a container by name or ID. |
|
|
|
Args: |
|
container_id (str): Container name or ID. |
|
|
|
Returns: |
|
A :py:class:`Container` object. |
|
|
|
Raises: |
|
:py:class:`docker.errors.NotFound` |
|
If the container does not exist. |
|
:py:class:`docker.errors.APIError` |
|
If the server returns an error. |
|
""" |
|
resp = self.client.api.inspect_container(container_id) |
|
return self.prepare_model(resp) |
|
|
|
def list(self, all=False, before=None, filters=None, limit=-1, since=None, |
|
sparse=False, ignore_removed=False): |
|
""" |
|
List containers. Similar to the ``docker ps`` command. |
|
|
|
Args: |
|
all (bool): Show all containers. Only running containers are shown |
|
by default |
|
since (str): Show only containers created since Id or Name, include |
|
non-running ones |
|
before (str): Show only container created before Id or Name, |
|
include non-running ones |
|
limit (int): Show `limit` last created containers, include |
|
non-running ones |
|
filters (dict): Filters to be processed on the image list. |
|
Available filters: |
|
|
|
- `exited` (int): Only containers with specified exit code |
|
- `status` (str): One of ``restarting``, ``running``, |
|
``paused``, ``exited`` |
|
- `label` (str|list): format either ``"key"``, ``"key=value"`` |
|
or a list of such. |
|
- `id` (str): The id of the container. |
|
- `name` (str): The name of the container. |
|
- `ancestor` (str): Filter by container ancestor. Format of |
|
``<image-name>[:tag]``, ``<image-id>``, or |
|
``<image@digest>``. |
|
- `before` (str): Only containers created before a particular |
|
container. Give the container name or id. |
|
- `since` (str): Only containers created after a particular |
|
container. Give container name or id. |
|
|
|
A comprehensive list can be found in the documentation for |
|
`docker ps |
|
<https://docs.docker.com/engine/reference/commandline/ps>`_. |
|
|
|
sparse (bool): Do not inspect containers. Returns partial |
|
information, but guaranteed not to block. Use |
|
:py:meth:`Container.reload` on resulting objects to retrieve |
|
all attributes. Default: ``False`` |
|
ignore_removed (bool): Ignore failures due to missing containers |
|
when attempting to inspect containers from the original list. |
|
Set to ``True`` if race conditions are likely. Has no effect |
|
if ``sparse=True``. Default: ``False`` |
|
|
|
Returns: |
|
(list of :py:class:`Container`) |
|
|
|
Raises: |
|
:py:class:`docker.errors.APIError` |
|
If the server returns an error. |
|
""" |
|
resp = self.client.api.containers(all=all, before=before, |
|
filters=filters, limit=limit, |
|
since=since) |
|
if sparse: |
|
return [self.prepare_model(r) for r in resp] |
|
else: |
|
containers = [] |
|
for r in resp: |
|
try: |
|
containers.append(self.get(r['Id'])) |
|
|
|
except NotFound: |
|
if not ignore_removed: |
|
raise |
|
return containers |
|
|
|
def prune(self, filters=None): |
|
return self.client.api.prune_containers(filters=filters) |
|
|
|
prune.__doc__ = APIClient.prune_containers.__doc__ |
|
|
|
|
|
|
|
RUN_CREATE_KWARGS = [ |
|
'command', |
|
'detach', |
|
'domainname', |
|
'entrypoint', |
|
'environment', |
|
'healthcheck', |
|
'hostname', |
|
'image', |
|
'labels', |
|
'mac_address', |
|
'name', |
|
'network_disabled', |
|
'platform', |
|
'stdin_open', |
|
'stop_signal', |
|
'tty', |
|
'use_config_proxy', |
|
'user', |
|
'working_dir', |
|
] |
|
|
|
|
|
RUN_HOST_CONFIG_KWARGS = [ |
|
'auto_remove', |
|
'blkio_weight_device', |
|
'blkio_weight', |
|
'cap_add', |
|
'cap_drop', |
|
'cgroup_parent', |
|
'cgroupns', |
|
'cpu_count', |
|
'cpu_percent', |
|
'cpu_period', |
|
'cpu_quota', |
|
'cpu_shares', |
|
'cpuset_cpus', |
|
'cpuset_mems', |
|
'cpu_rt_period', |
|
'cpu_rt_runtime', |
|
'device_cgroup_rules', |
|
'device_read_bps', |
|
'device_read_iops', |
|
'device_write_bps', |
|
'device_write_iops', |
|
'devices', |
|
'device_requests', |
|
'dns_opt', |
|
'dns_search', |
|
'dns', |
|
'extra_hosts', |
|
'group_add', |
|
'init', |
|
'init_path', |
|
'ipc_mode', |
|
'isolation', |
|
'kernel_memory', |
|
'links', |
|
'log_config', |
|
'lxc_conf', |
|
'mem_limit', |
|
'mem_reservation', |
|
'mem_swappiness', |
|
'memswap_limit', |
|
'mounts', |
|
'nano_cpus', |
|
'network_mode', |
|
'oom_kill_disable', |
|
'oom_score_adj', |
|
'pid_mode', |
|
'pids_limit', |
|
'privileged', |
|
'publish_all_ports', |
|
'read_only', |
|
'restart_policy', |
|
'security_opt', |
|
'shm_size', |
|
'storage_opt', |
|
'sysctls', |
|
'tmpfs', |
|
'ulimits', |
|
'userns_mode', |
|
'uts_mode', |
|
'version', |
|
'volume_driver', |
|
'volumes_from', |
|
'runtime' |
|
] |
|
|
|
|
|
def _create_container_args(kwargs): |
|
""" |
|
Convert arguments to create() to arguments to create_container(). |
|
""" |
|
|
|
create_kwargs = {} |
|
for key in copy.copy(kwargs): |
|
if key in RUN_CREATE_KWARGS: |
|
create_kwargs[key] = kwargs.pop(key) |
|
host_config_kwargs = {} |
|
for key in copy.copy(kwargs): |
|
if key in RUN_HOST_CONFIG_KWARGS: |
|
host_config_kwargs[key] = kwargs.pop(key) |
|
|
|
|
|
ports = kwargs.pop('ports', {}) |
|
if ports: |
|
host_config_kwargs['port_bindings'] = ports |
|
|
|
volumes = kwargs.pop('volumes', {}) |
|
if volumes: |
|
host_config_kwargs['binds'] = volumes |
|
|
|
network = kwargs.pop('network', None) |
|
networking_config = kwargs.pop('networking_config', None) |
|
if network: |
|
if networking_config: |
|
|
|
|
|
if network not in networking_config: |
|
networking_config = None |
|
|
|
create_kwargs['networking_config'] = NetworkingConfig( |
|
networking_config |
|
) if networking_config else {network: None} |
|
host_config_kwargs['network_mode'] = network |
|
|
|
|
|
|
|
if kwargs: |
|
raise create_unexpected_kwargs_error('run', kwargs) |
|
|
|
create_kwargs['host_config'] = HostConfig(**host_config_kwargs) |
|
|
|
|
|
port_bindings = create_kwargs['host_config'].get('PortBindings') |
|
if port_bindings: |
|
|
|
create_kwargs['ports'] = [tuple(p.split('/', 1)) |
|
for p in sorted(port_bindings.keys())] |
|
if volumes: |
|
if isinstance(volumes, dict): |
|
create_kwargs['volumes'] = [ |
|
v.get('bind') for v in volumes.values() |
|
] |
|
else: |
|
create_kwargs['volumes'] = [ |
|
_host_volume_from_bind(v) for v in volumes |
|
] |
|
return create_kwargs |
|
|
|
|
|
def _host_volume_from_bind(bind): |
|
drive, rest = ntpath.splitdrive(bind) |
|
bits = rest.split(':', 1) |
|
if len(bits) == 1 or bits[1] in ('ro', 'rw'): |
|
return drive + bits[0] |
|
elif bits[1].endswith(':ro') or bits[1].endswith(':rw'): |
|
return bits[1][:-3] |
|
else: |
|
return bits[1] |
|
|
|
|
|
ExecResult = namedtuple('ExecResult', 'exit_code,output') |
|
""" A result of Container.exec_run with the properties ``exit_code`` and |
|
``output``. """ |
|
|