docker_image_info – Inspect docker images — Ansible Documentation

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# docker_image_info – Inspect docker images

- Synopsis

- Requirements

- Parameters

- Notes

- Examples

- Return Values

- Status

## Synopsis

- Provide one or more image names, and the module will inspect each, returning an array of inspection results.

- If an image does not exist locally, it will not appear in the results. If you want to check whether an image exists locally, you can call the module with the image name, then check whether the result list is empty (image does not exist) or has one element (the image exists locally).

- The module will not attempt to pull images from registries. Use docker_image with source set to `pull` to ensure an image is pulled.

Aliases: docker_image_facts

## Requirements

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

- Docker API >= 1.20

- Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details). For Python 2.6, `docker-py` must be used. Otherwise, it is recommended to install the `docker` Python module. Note that both modules should not be installed at the same time. Also note that when both modules are installed and one of them is uninstalled, the other might no longer function and a reinstall of it is required.

- Docker SDK for Python >= 1.8.0 (use docker-py for Python 2.6)

## Parameters

Parameter | Choices/Defaults | Comments
--- | --- | ---
api_version string | Default: "auto" | 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. aliases: docker_api_version
ca_cert 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. aliases: tls_ca_cert, cacert_path
client_cert 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. aliases: tls_client_cert, cert_path
client_key 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. aliases: tls_client_key, key_path
debug boolean | Choices: no ← yes | Debug mode
docker_host string | Default: "unix://var/run/docker.sock" | 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. aliases: docker_url
name list / elements=string |  | An image name or a list of image names. Name format will be `name[:tag]` or `repository/name[:tag]`, where `tag` is optional. If a tag is not provided, `latest` will be used. Instead of image names, also image IDs can be used. If no name is provided, a list of all images will be returned.
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 | Default: 60 | 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.
tls boolean | Choices: no ← yes | 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 `yes` 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.
tls_hostname string | Default: "localhost" | 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.
validate_certs boolean | Choices: no ← yes | 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. aliases: tls_verify

## Notes

Note

- This module was called `docker_image_facts` before Ansible 2.8. The usage did not change.

- 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 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.

## Examples

    - name: Inspect a single image
      docker_image_info:
        name: pacur/centos-7

    - name: Inspect multiple images
      docker_image_info:
        name:
          - pacur/centos-7
          - sinatra
      register: result

    - name: Make sure that both images pacur/centos-7 and sinatra exist locally
      assert:
        that:
          - result.images | length == 2

## Return Values

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

Key | Returned | Description
--- | --- | ---
images list / elements=dictionary | always | Inspection results for the selected images. The list only contains inspection results of images existing locally. Sample: [{'Architecture': 'amd64', 'Author': '', 'Comment': '', 'Config': {'AttachStderr': False, 'AttachStdin': False, 'AttachStdout': False, 'Cmd': ['/etc/docker/registry/config.yml'], 'Domainname': '', 'Entrypoint': ['/bin/registry'], 'Env': ['PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'], 'ExposedPorts': {'5000/tcp': {}}, 'Hostname': 'e5c68db50333', 'Image': 'c72dce2618dc8f7b794d2b2c2b1e64e0205ead5befc294f8111da23bd6a2c799', 'Labels': {}, 'OnBuild': [], 'OpenStdin': False, 'StdinOnce': False, 'Tty': False, 'User': '', 'Volumes': {'/var/lib/registry': {}}, 'WorkingDir': ''}, 'Container': 'e83a452b8fb89d78a25a6739457050131ca5c863629a47639530d9ad2008d610', 'ContainerConfig': {'AttachStderr': False, 'AttachStdin': False, 'AttachStdout': False, 'Cmd': ['/bin/sh', '-c', '#(nop) CMD ["/etc/docker/registry/config.yml"]'], 'Domainname': '', 'Entrypoint': ['/bin/registry'], 'Env': ['PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'], 'ExposedPorts': {'5000/tcp': {}}, 'Hostname': 'e5c68db50333', 'Image': 'c72dce2618dc8f7b794d2b2c2b1e64e0205ead5befc294f8111da23bd6a2c799', 'Labels': {}, 'OnBuild': [], 'OpenStdin': False, 'StdinOnce': False, 'Tty': False, 'User': '', 'Volumes': {'/var/lib/registry': {}}, 'WorkingDir': ''}, 'Created': '2016-03-08T21:08:15.399680378Z', 'DockerVersion': '1.9.1', 'GraphDriver': {'Data': None, 'Name': 'aufs'}, 'Id': '53773d8552f07b730f3e19979e32499519807d67b344141d965463a950a66e08', 'Name': 'registry:2', 'Os': 'linux', 'Parent': 'f0b1f729f784b755e7bf9c8c2e65d8a0a35a533769c2588f02895f6781ac0805', 'RepoDigests': [], 'RepoTags': ['registry:2'], 'Size': 0, 'VirtualSize': 165808884}]

## Status

- This module is not guaranteed to have a backwards compatible interface. [preview]

- This module is maintained by the Ansible Community. [community]

### Authors

- Chris Houseknecht (@chouseknecht)

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