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Management of Docker images
.. versionadded:: 2017.7.0
:depends: docker_ Python module
.. note::
Older releases of the Python bindings for Docker were called docker-py_ in
PyPI. All releases of docker_, and releases of docker-py_ >= 1.6.0 are
supported. These python bindings can easily be installed using
:py:func:`pip.install <salt.modules.pip.install>`:
.. code-block:: bash
salt myminion pip.install docker
To upgrade from docker-py_ to docker_, you must first uninstall docker-py_,
and then install docker_:
.. code-block:: bash
salt myminion pip.uninstall docker-py
salt myminion pip.install docker
.. _docker: https://pypi.python.org/pypi/docker
.. _docker-py: https://pypi.python.org/pypi/docker-py
These states were moved from the :mod:`docker <salt.states.docker>` state
module (formerly called **dockerng**) in the 2017.7.0 release.
.. note::
To pull from a Docker registry, authentication must be configured. See
:ref:`here <docker-authentication>` for more information on how to
configure access to docker registries in :ref:`Pillar <pillar>` data.
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.. versionchanged:: 2018.3.0
The ``tag`` argument has been added. It is now required unless pulling
from a registry.
Ensure that an image is present. The image can either be pulled from a
Docker registry, built from a Dockerfile, loaded from a saved image, or
built by running SLS files against a base image.
If none of the ``build``, ``load``, or ``sls`` arguments are used, then Salt
will pull from the :ref:`configured registries <docker-authentication>`. If
the specified image already exists, it will not be pulled unless ``force``
is set to ``True``. Here is an example of a state that will pull an image
from the Docker Hub:
.. code-block:: yaml
myuser/myimage:
docker_image.present:
- tag: mytag
tag
Tag name for the image. Required when using ``build``, ``load``, or
``sls`` to create the image, but optional if pulling from a repository.
.. versionadded:: 2018.3.0
build
Path to directory on the Minion containing a Dockerfile
.. code-block:: yaml
myuser/myimage:
docker_image.present:
- build: /home/myuser/docker/myimage
- tag: mytag
myuser/myimage:
docker_image.present:
- build: /home/myuser/docker/myimage
- tag: mytag
- dockerfile: Dockerfile.alternative
The image will be built using :py:func:`docker.build
<salt.modules.dockermod.build>` and the specified image name and tag
will be applied to it.
.. versionadded:: 2016.11.0
.. versionchanged:: 2018.3.0
The ``tag`` must be manually specified using the ``tag`` argument.
load
Loads a tar archive created with :py:func:`docker.load
<salt.modules.dockermod.load>` (or the ``docker load`` Docker CLI
command), and assigns it the specified repo and tag.
.. code-block:: yaml
myuser/myimage:
docker_image.present:
- load: salt://path/to/image.tar
- tag: mytag
.. versionchanged:: 2018.3.0
The ``tag`` must be manually specified using the ``tag`` argument.
force : False
Set this parameter to ``True`` to force Salt to pull/build/load the
image even if it is already present.
client_timeout
Timeout in seconds for the Docker client. This is not a timeout for
the state, but for receiving a response from the API.
dockerfile
Allows for an alternative Dockerfile to be specified. Path to alternative
Dockefile is relative to the build path for the Docker container.
.. versionadded:: 2016.11.0
sls
Allow for building of image with :py:func:`docker.sls_build
<salt.modules.dockermod.sls_build>` by specifying the SLS files with
which to build. This can be a list or comma-seperated string.
.. code-block:: yaml
myuser/myimage:
docker_image.present:
- tag: latest
- sls:
- webapp1
- webapp2
- base: centos
- saltenv: base
.. versionadded: 2017.7.0
.. versionchanged:: 2018.3.0
The ``tag`` must be manually specified using the ``tag`` argument.
base
Base image with which to start :py:func:`docker.sls_build
<salt.modules.dockermod.sls_build>`
.. versionadded:: 2017.7.0
saltenv
Specify the environment from which to retrieve the SLS indicated by the
`mods` parameter.
.. versionadded:: 2017.7.0
.. versionchanged:: 2018.3.0
Now uses the effective saltenv if not explicitly passed. In earlier
versions, ``base`` was assumed as a default.
pillarenv
Specify a Pillar environment to be used when applying states. This
can also be set in the minion config file using the
:conf_minion:`pillarenv` option. When neither the
:conf_minion:`pillarenv` minion config option nor this CLI argument is
used, all Pillar environments will be merged together.
.. versionadded:: 2018.3.0
pillar
Custom Pillar values, passed as a dictionary of key-value pairs
.. note::
Values passed this way will override Pillar values set via
``pillar_roots`` or an external Pillar source.
.. versionadded:: 2018.3.0
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Ensure that an image is absent from the Minion. Image names can be
specified either using ``repo:tag`` notation, or just the repo name (in
which case a tag of ``latest`` is assumed).
images
Run this state on more than one image at a time. The following two
examples accomplish the same thing:
.. code-block:: yaml
remove_images:
docker_image.absent:
- names:
- busybox
- centos:6
- nginx
.. code-block:: yaml
remove_images:
docker_image.absent:
- images:
- busybox
- centos:6
- nginx
However, the second example will be a bit quicker since Salt will do
all the deletions in a single run, rather than executing the state
separately on each image (as it would in the first example).
force : False
Salt will fail to remove any images currently in use by a container.
Set this option to true to remove the image even if it is already
present.
.. note::
This option can also be overridden by Pillar data. If the Minion
has a pillar variable named ``docker.running.force`` which is
set to ``True``, it will turn on this option. This pillar variable
can even be set at runtime. For example:
.. code-block:: bash
salt myminion state.sls docker_stuff pillar="{docker.force: True}"
If this pillar variable is present and set to ``False``, then it
will turn off this option.
For more granular control, setting a pillar variable named
``docker.force.image_name`` will affect only the named image.
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The docker_image watcher, called to invoke the watch command.
.. note::
This state exists to support special handling of the ``watch``
:ref:`requisite <requisites>`. It should not be called directly.
Parameters for this function should be set by the state being triggered.
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