community.docker.docker_host_info (3.8.1) — module

Retrieves facts about docker host and lists of objects of the services.

Authors: Piotr Wojciechowski (@WojciechowskiPiotr)

Install collection

Install with ansible-galaxy collection install community.docker:==3.8.1


Add to requirements.yml

  collections:
    - name: community.docker
      version: 3.8.1

Description

Retrieves facts about a docker host.

Essentially returns the output of C(docker system info).

The module also allows to list object names for containers, images, networks and volumes. It also allows to query information on disk usage.

The output differs depending on API version of the docker daemon.

If the docker daemon cannot be contacted or does not meet the API version requirements, the module will fail.


Requirements

Usage examples

  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get info on docker host
  community.docker.docker_host_info:
  register: result
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get info on docker host and list images
  community.docker.docker_host_info:
    images: true
  register: result
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get info on docker host and list images matching the filter
  community.docker.docker_host_info:
    images: true
    images_filters:
      label: "mylabel"
  register: result
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get info on docker host and verbose list images
  community.docker.docker_host_info:
    images: true
    verbose_output: true
  register: result
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get info on docker host and used disk space
  community.docker.docker_host_info:
    disk_usage: true
  register: result
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Get info on docker host and list containers matching the filter
  community.docker.docker_host_info:
    containers: true
    containers_filters:
      label:
        - key1=value1
        - key2=value2
  register: result
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
- name: Show host information
  ansible.builtin.debug:
    var: result.host_info

Inputs

    
tls:
    default: false
    description:
    - Secure the connection to the API by using TLS without verifying the authenticity
      of the Docker host server. Note that if O(validate_certs) is set to V(true) as well,
      it will take precedence.
    - If the value is not specified in the task, the value of environment variable E(DOCKER_TLS)
      will be used instead. If the environment variable is not set, the default value
      will be used.
    type: bool

debug:
    default: false
    description:
    - Debug mode
    type: bool

images:
    default: false
    description:
    - Whether to list images.
    type: bool

ca_path:
    aliases:
    - ca_cert
    - tls_ca_cert
    - cacert_path
    description:
    - 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 E(DOCKER_CERT_PATH)
      is set, the file C(ca.pem) from the directory specified in the environment variable
      E(DOCKER_CERT_PATH) will be used.
    - This option was called O(ca_cert) and got renamed to O(ca_path) in community.docker
      3.6.0. The old name has been added as an alias and can still be used.
    type: path

timeout:
    default: 60
    description:
    - 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 E(DOCKER_TIMEOUT)
      will be used instead. If the environment variable is not set, the default value
      will be used.
    type: int

volumes:
    default: false
    description:
    - Whether to list volumes.
    type: bool

networks:
    default: false
    description:
    - Whether to list networks.
    type: bool

client_key:
    aliases:
    - tls_client_key
    - key_path
    description:
    - Path to the client's TLS key file.
    - If the value is not specified in the task and the environment variable E(DOCKER_CERT_PATH)
      is set, the file C(key.pem) from the directory specified in the environment variable
      E(DOCKER_CERT_PATH) will be used.
    type: path

containers:
    default: false
    description:
    - Whether to list containers.
    type: bool

disk_usage:
    default: false
    description:
    - Summary information on used disk space by all Docker layers.
    - The output is a sum of images, volumes, containers and build cache.
    type: bool

api_version:
    aliases:
    - docker_api_version
    default: auto
    description:
    - 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 E(DOCKER_API_VERSION)
      will be used instead. If the environment variable is not set, the default value
      will be used.
    type: str

client_cert:
    aliases:
    - tls_client_cert
    - cert_path
    description:
    - Path to the client's TLS certificate file.
    - If the value is not specified in the task and the environment variable E(DOCKER_CERT_PATH)
      is set, the file C(cert.pem) from the directory specified in the environment variable
      E(DOCKER_CERT_PATH) will be used.
    type: path

docker_host:
    aliases:
    - docker_url
    default: unix:///var/run/docker.sock
    description:
    - 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, V(tcp://192.0.2.23:2376).
      If TLS is used to encrypt the connection, the module will automatically replace
      C(tcp) in the connection URL with C(https).
    - If the value is not specified in the task, the value of environment variable E(DOCKER_HOST)
      will be used instead. If the environment variable is not set, the default value
      will be used.
    type: str

ssl_version:
    description:
    - Provide a valid SSL version number. Default value determined by L(SSL Python module,
      https://docs.python.org/3/library/ssl.html).
    - If the value is not specified in the task, the value of environment variable E(DOCKER_SSL_VERSION)
      will be used instead.
    type: str

tls_hostname:
    description:
    - 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 E(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 V(localhost) in older versions. It was
      removed in community.docker 3.0.0.
    type: str

containers_all:
    default: false
    description:
    - By default, only running containers are returned.
    - This corresponds to the C(--all) option to C(docker container list).
    type: bool
    version_added: 3.4.0
    version_added_collection: community.docker

images_filters:
    description:
    - A dictionary of filter values used for selecting images to list.
    - 'For example, C(dangling: true).'
    - C(label) is a special case of filter which can be a string C(<key>) matching when
      a label is present, a string C(<key>=<value>) matching when a label has a particular
      value, or a list of strings C(<key>)/C(<key>=<value).
    - See L(the docker documentation,https://docs.docker.com/engine/reference/commandline/image_prune/#filtering)
      for more information on possible filters.
    type: dict

use_ssh_client:
    default: false
    description:
    - For SSH transports, use the C(ssh) CLI tool instead of paramiko.
    type: bool
    version_added: 1.5.0
    version_added_collection: community.docker

validate_certs:
    aliases:
    - tls_verify
    default: false
    description:
    - 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 E(DOCKER_TLS_VERIFY)
      will be used instead. If the environment variable is not set, the default value
      will be used.
    type: bool

verbose_output:
    default: false
    description:
    - When set to V(true) and O(networks), O(volumes), O(images), O(containers), or O(disk_usage)
      is set to V(true) then output will contain verbose information about objects matching
      the full output of API method. For details see the documentation of your version
      of Docker API at U(https://docs.docker.com/engine/api/).
    - The verbose output in this module contains only subset of information returned by
      this module for each type of the objects.
    type: bool

volumes_filters:
    description:
    - A dictionary of filter values used for selecting volumes to list.
    - C(label) is a special case of filter which can be a string C(<key>) matching when
      a label is present, a string C(<key>=<value>) matching when a label has a particular
      value, or a list of strings C(<key>)/C(<key>=<value).
    - See L(the docker documentation,https://docs.docker.com/engine/reference/commandline/volume_prune/#filtering)
      for more information on possible filters.
    type: dict

networks_filters:
    description:
    - A dictionary of filter values used for selecting networks to list.
    - C(label) is a special case of filter which can be a string C(<key>) matching when
      a label is present, a string C(<key>=<value>) matching when a label has a particular
      value, or a list of strings C(<key>)/C(<key>=<value).
    - See L(the docker documentation,https://docs.docker.com/engine/reference/commandline/network_prune/#filtering)
      for more information on possible filters.
    type: dict

containers_filters:
    description:
    - A dictionary of filter values used for selecting containers to list.
    - 'For example, C(until: 24h).'
    - C(label) is a special case of filter which can be a string C(<key>) matching when
      a label is present, a string C(<key>=<value>) matching when a label has a particular
      value, or a list of strings C(<key>)/C(<key>=<value).
    - See L(the docker documentation,https://docs.docker.com/engine/reference/commandline/container_prune/#filtering)
      for more information on possible filters.
    type: dict

Outputs

can_talk_to_docker:
  description:
  - Will be V(true) if the module can talk to the docker daemon.
  returned: both on success and on error
  type: bool
containers:
  description:
  - List of dict objects containing the basic information about each container. Keys
    matches the C(docker container ls) output unless O(verbose_output=true). See description
    for O(verbose_output).
  elements: dict
  returned: When O(containers=true)
  type: list
disk_usage:
  description:
  - Information on summary disk usage by images, containers and volumes on docker
    host unless O(verbose_output=true). See description for O(verbose_output).
  returned: When O(disk_usage=true)
  type: dict
host_info:
  description:
  - Facts representing the basic state of the docker host. Matches the C(docker system
    info) output.
  returned: always
  type: dict
images:
  description:
  - List of dict objects containing the basic information about each image. Keys matches
    the C(docker image ls) output unless O(verbose_output=true). See description for
    O(verbose_output).
  elements: dict
  returned: When O(images=true)
  type: list
networks:
  description:
  - List of dict objects containing the basic information about each network. Keys
    matches the C(docker network ls) output unless O(verbose_output=true). See description
    for O(verbose_output).
  elements: dict
  returned: When O(networks=true)
  type: list
volumes:
  description:
  - List of dict objects containing the basic information about each volume. Keys
    matches the C(docker volume ls) output unless O(verbose_output=true). See description
    for O(verbose_output).
  elements: dict
  returned: When O(volumes=true)
  type: list