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

Note

This module is part of the community.docker collection (version 4.2.0).

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
backports.ssl_match_hostname (when using TLS on Python 2)
paramiko (when using SSH with use_ssh_client=false)
pyOpenSSL (when using TLS)
pywin32 (when using named pipes on Windows 32)
requests

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 this collection 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. Choices: `false` ← (default) `true`
builder_cache_all boolean added in community.docker 3.10.0	Whether to remove all types of build cache. Choices: `false` ← (default) `true`
builder_cache_filters dictionary added in community.docker 3.10.0	A dictionary of filter values used for selecting images to delete. For example, `until: 10m`. See the API documentation for more information on possible filters.
builder_cache_keep_storage string added in community.docker 3.10.0	Amount of disk space to keep for cache in format `<number>[<unit>]`.” Number is a positive integer. Unit can be one of `B` (byte), `K` (kibibyte, 1024B), `M` (mebibyte), `G` (gibibyte), `T` (tebibyte), or `P` (pebibyte). Omitting the unit defaults to bytes.
ca_path aliases: ca_cert, 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. This option was called `ca_cert` and got renamed to `ca_path` in community.docker 3.6.0. The old name has been added as an alias and can still 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.
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. Note that this option had a default value `localhost` in older versions. It was removed in community.docker 3.0.0.
use_ssh_client boolean added in community.docker 1.5.0	For SSH transports, use the `ssh` CLI tool instead of paramiko. 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.

Attributes 

Attribute	Support	Description
action_group	Action groups: community.docker.docker, docker	Use `group/docker` or `group/community.docker.docker` in `module_defaults` to set defaults for this module.
check_mode	Support: none	Can run in `check_mode` and return changed status prediction without modifying target.
diff_mode	Support: none	Will return details on what has changed (or possibly needs changing in `check_mode`), when in diff mode.

Notes 

Note

The module always returned changed=false before community.docker 3.5.1.
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_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.
This module does not use the Docker SDK for Python to communicate with the Docker daemon. It uses code derived from the Docker SDK or Python that is included in this collection.

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 containers with labels
  community.docker.docker_prune:
    containers: true
    containers_filters:
      # Prune containers whose "foo" label has value "bar", and
      # whose "bam" label has value "baz". If you only want to
      # compare one label, you can provide it as a string instead
      # of a list with one element.
      label:
        - foo=bar
        - bam=baz
      # Prune containers whose label "bar" does *not* have value
      # "baz". If you want to avoid more than one label, you can
      # provide a list of multiple label-value pairs.
      "label!": bar=baz

- 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_caches_deleted list / elements=string added in community.docker 3.10.0	The build caches that were deleted. Returned: `builder_cache=true` and API version is 1.39 or later Sample: `[]`
builder_cache_space_reclaimed integer	Amount of reclaimed disk space from builder cache pruning in bytes. Returned: `builder_cache=true` Sample: `0`
containers list / elements=string	List of IDs of deleted containers. Returned: `containers=true` Sample: `[]`
containers_space_reclaimed integer	Amount of reclaimed disk space from container pruning in bytes. Returned: `containers=true` Sample: `0`
images list / elements=string	List of IDs of deleted images. Returned: `images=true` Sample: `[]`
images_space_reclaimed integer	Amount of reclaimed disk space from image pruning in bytes. Returned: `images=true` Sample: `0`
networks list / elements=string	List of IDs of deleted networks. Returned: `networks=true` Sample: `[]`
volumes list / elements=string	List of IDs of deleted volumes. Returned: `volumes=true` Sample: `[]`
volumes_space_reclaimed integer	Amount of reclaimed disk space from volumes pruning in bytes. Returned: `volumes=true` Sample: `0`

Authors

Felix Fontein (@felixfontein)

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

Synopsis

Requirements

Parameters

Attributes

Notes

Examples

Return Values