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community.docker.docker_api – Run tasks in docker containers

Note

This plugin is part of the community.docker collection (version 1.10.2).

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.

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

New in version 1.1.0: of community.docker

Synopsis

• Run commands or put/fetch files to an existing docker container.

• Uses Docker SDK for Python to interact directly with the Docker daemon instead of using the Docker CLI. Use the community.docker.docker connection plugin if you want to use the Docker CLI.

Requirements

The below requirements are needed on the local controller node that executes this connection.

• Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details).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.

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” Configuration: Variable: ansible_docker_api_version
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. Configuration: Variable: ansible_docker_ca_cert
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. Configuration: Variable: ansible_docker_client_cert
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. Configuration: Variable: ansible_docker_client_key
debug boolean	Debug mode Choices: no ← (default) yes
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” Configuration: Variable: ansible_docker_docker_host
remote_addr string	The name of the container you want to access. Default: “inventory_hostname” Configuration: Variable: ansible_host Variable: ansible_docker_host
remote_user string	The user to execute as inside the container. Configuration: Variable: ansible_user Variable: ansible_docker_user
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. Configuration: Variable: ansible_docker_ssl_version
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 Configuration: Variable: ansible_docker_timeout
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 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. Choices: no ← (default) yes Configuration: Variable: ansible_docker_tls
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. Configuration: Variable: ansible_docker_tls_hostname
use_ssh_client boolean added in 1.5.0 of community.docker	For SSH transports, use the ssh CLI tool instead of paramiko. Requires Docker SDK for Python 4.4.0 or newer. Choices: no ← (default) yes
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: no ← (default) yes Configuration: Variable: ansible_docker_validate_certs

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.

Authors

• Felix Fontein (@felixfontein)