# docker_container_info – Retrieves facts about docker container

New in version 2.8.

- Synopsis

- Requirements

- Parameters

- Notes

- Examples

- Return Values

- Status

## Synopsis

- Retrieves facts about a docker container.

- Essentially returns the output of `docker inspect <name>`, similar to what docker_container returns for a non-absent container.

## 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- Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details).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 string / required |  | The name of the container to inspect. When identifying an existing container name may be a name or a long or short container ID.
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

- 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: Get infos on container
      docker_container_info:
        name: mydata
      register: result

    - name: Does container exist?
      debug:
        msg: "The container {{ 'exists' if result.exists else 'does not exist' }}"

    - name: Print information about container
      debug:
        var: result.container
      when: result.exists

## Return Values

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

Key | Returned | Description
--- | --- | ---

container
dictionary

always

Facts representing the current state of the container. Matches the docker inspection output.
Will be `none` if container does not exist.
Sample:
{ "AppArmorProfile": "", "Args": [], "Config": { "AttachStderr": false, "AttachStdin": false, "AttachStdout": false, "Cmd": [ "/usr/bin/supervisord" ], "Domainname": "", "Entrypoint": null, "Env": [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" ], "ExposedPorts": { "443/tcp": {}, "80/tcp": {} }, "Hostname": "8e47bf643eb9", "Image": "lnmp_nginx:v1", "Labels": {}, "OnBuild": null, "OpenStdin": false, "StdinOnce": false, "Tty": false, "User": "", "Volumes": { "/tmp/lnmp/nginx-sites/logs/": {} }, ... }

exists boolean | always | Returns whether the container exists. Sample: True

## Status

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

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

### Authors

- Felix Fontein (@felixfontein)

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