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community.docker.docker_prune module – Allows to prune various docker objects

Note

This module is part of the community.docker collection (version 2.7.3).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.docker. You need further requirements to be able to use this module, see Requirements for details.

To use it in a playbook, specify: community.docker.docker_prune.

Synopsis 

Allows to run docker container prune, docker image prune, docker network prune and docker volume prune via the Docker API.

Requirements 

The below requirements are needed on the host that executes this module.

Docker API >= 1.25
Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details). This module does *not* work with docker-py.
Docker SDK for Python >= 2.1.0
Python >= 2.7

Parameters 

Parameter	Comments
api_version aliases: docker_api_version string	The version of the Docker API running on the Docker Host. Defaults to the latest version of the API supported by Docker SDK for Python and the docker daemon. If the value is not specified in the task, the value of environment variable `DOCKER_API_VERSION` will be used instead. If the environment variable is not set, the default value will be used. Default: `"auto"`
builder_cache boolean	Whether to prune the builder cache. Requires version 3.3.0 of the Docker SDK for Python or newer. Choices: `false` ← (default) `true`
ca_cert aliases: tls_ca_cert, cacert_path path	Use a CA certificate when performing server verification by providing the path to a CA certificate file. If the value is not specified in the task and the environment variable `DOCKER_CERT_PATH` is set, the file `ca.pem` from the directory specified in the environment variable `DOCKER_CERT_PATH` will be used.
client_cert aliases: tls_client_cert, cert_path path	Path to the client’s TLS certificate file. If the value is not specified in the task and the environment variable `DOCKER_CERT_PATH` is set, the file `cert.pem` from the directory specified in the environment variable `DOCKER_CERT_PATH` will be used.
client_key aliases: tls_client_key, key_path path	Path to the client’s TLS key file. If the value is not specified in the task and the environment variable `DOCKER_CERT_PATH` is set, the file `key.pem` from the directory specified in the environment variable `DOCKER_CERT_PATH` will be used.
containers boolean	Whether to prune containers. Choices: `false` ← (default) `true`
containers_filters dictionary	A dictionary of filter values used for selecting containers to delete. For example, `until: 24h`. See the docker documentation for more information on possible filters.
debug boolean	Debug mode Choices: `false` ← (default) `true`
docker_host aliases: docker_url string	The URL or Unix socket path used to connect to the Docker API. To connect to a remote host, provide the TCP connection string. For example, `tcp://192.0.2.23:2376`. If TLS is used to encrypt the connection, the module will automatically replace `tcp` in the connection URL with `https`. If the value is not specified in the task, the value of environment variable `DOCKER_HOST` will be used instead. If the environment variable is not set, the default value will be used. Default: `"unix://var/run/docker.sock"`
images boolean	Whether to prune images. Choices: `false` ← (default) `true`
images_filters dictionary	A dictionary of filter values used for selecting images to delete. For example, `dangling: true`. See the docker documentation for more information on possible filters.
networks boolean	Whether to prune networks. Choices: `false` ← (default) `true`
networks_filters dictionary	A dictionary of filter values used for selecting networks to delete. See the docker documentation for more information on possible filters.
ssl_version string	Provide a valid SSL version number. Default value determined by ssl.py module. If the value is not specified in the task, the value of environment variable `DOCKER_SSL_VERSION` will be used instead.
timeout integer	The maximum amount of time in seconds to wait on a response from the API. If the value is not specified in the task, the value of environment variable `DOCKER_TIMEOUT` will be used instead. If the environment variable is not set, the default value will be used. Default: `60`
tls boolean	Secure the connection to the API by using TLS without verifying the authenticity of the Docker host server. Note that if validate_certs is set to `true` as well, it will take precedence. If the value is not specified in the task, the value of environment variable `DOCKER_TLS` will be used instead. If the environment variable is not set, the default value will be used. Choices: `false` ← (default) `true`
tls_hostname string	When verifying the authenticity of the Docker Host server, provide the expected name of the server. If the value is not specified in the task, the value of environment variable `DOCKER_TLS_HOSTNAME` will be used instead. If the environment variable is not set, the default value will be used. The current default value is `localhost`. This default is deprecated and will change in community.docker 2.0.0 to be a value computed from docker_host. Explicitly specify `localhost` to make sure this value will still be used, and to disable the deprecation message which will be shown otherwise.
use_ssh_client boolean added in community.docker 1.5.0	For SSH transports, use the `ssh` CLI tool instead of paramiko. Requires Docker SDK for Python 4.4.0 or newer. Choices: `false` ← (default) `true`
validate_certs aliases: tls_verify boolean	Secure the connection to the API by using TLS and verifying the authenticity of the Docker host server. If the value is not specified in the task, the value of environment variable `DOCKER_TLS_VERIFY` will be used instead. If the environment variable is not set, the default value will be used. Choices: `false` ← (default) `true`
volumes boolean	Whether to prune volumes. Choices: `false` ← (default) `true`
volumes_filters dictionary	A dictionary of filter values used for selecting volumes to delete. See the docker documentation for more information on possible filters.

Notes 

Note

Connect to the Docker daemon by providing parameters with each task or by defining environment variables. You can define DOCKER_HOST, DOCKER_TLS_HOSTNAME, DOCKER_API_VERSION, DOCKER_CERT_PATH, DOCKER_SSL_VERSION, DOCKER_TLS, DOCKER_TLS_VERIFY and DOCKER_TIMEOUT. If you are using docker machine, run the script shipped with the product that sets up the environment. It will set these variables for you. See https://docs.docker.com/machine/reference/env/ for more details.
When connecting to Docker daemon with TLS, you might need to install additional Python packages. For the Docker SDK for Python, version 2.4 or newer, this can be done by installing docker[tls] with ansible.builtin.pip.
Note that the Docker SDK for Python only allows to specify the path to the Docker configuration for very few functions. In general, it will use $HOME/.docker/config.json if the DOCKER_CONFIG environment variable is not specified, and use $DOCKER_CONFIG/config.json otherwise.
This module uses the Docker SDK for Python to communicate with the Docker daemon.

Examples 

- name: Prune containers older than 24h
  community.docker.docker_prune:
    containers: true
    containers_filters:
      # only consider containers created more than 24 hours ago
      until: 24h

- name: Prune everything
  community.docker.docker_prune:
    containers: true
    images: true
    networks: true
    volumes: true
    builder_cache: true

- name: Prune everything (including non-dangling images)
  community.docker.docker_prune:
    containers: true
    images: true
    images_filters:
      dangling: false
    networks: true
    volumes: true
    builder_cache: true

Return Values 

Common return values are documented here, the following are the fields unique to this module:

Key	Description
builder_cache_space_reclaimed integer	Amount of reclaimed disk space from builder cache pruning in bytes. Returned: builder_cache is `true` Sample: `0`
containers list / elements=string	List of IDs of deleted containers. Returned: containers is `true` Sample: `[]`
containers_space_reclaimed integer	Amount of reclaimed disk space from container pruning in bytes. Returned: containers is `true` Sample: `0`
images list / elements=string	List of IDs of deleted images. Returned: images is `true` Sample: `[]`
images_space_reclaimed integer	Amount of reclaimed disk space from image pruning in bytes. Returned: images is `true` Sample: `0`
networks list / elements=string	List of IDs of deleted networks. Returned: networks is `true` Sample: `[]`
volumes list / elements=string	List of IDs of deleted volumes. Returned: volumes is `true` Sample: `[]`
volumes_space_reclaimed integer	Amount of reclaimed disk space from volumes pruning in bytes. Returned: volumes is `true` Sample: `0`

Authors

Felix Fontein (@felixfontein)

Collection links

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community.docker.docker_prune module – Allows to prune various docker objects

Synopsis

Requirements

Parameters

Notes

Examples

Return Values