docker_network - Manage Docker networks

New in version 2.2.

Synopsis

  • Create/remove Docker networks and connect containers to them.
  • Performs largely the same function as the “docker network” CLI subcommand.

Requirements (on host that executes module)

  • python >= 2.6
  • docker-py >= 1.7.0
  • The docker server >= 1.9.0

Options

parameter required default choices comments
api_version
 no default provided by docker-py
The version of the Docker API running on the Docker Host. Defaults to the latest version of the API supported by docker-py.
aliases: docker_api_version
appends
 no
By default the connected list is canonical, meaning containers not on the list are removed from the network. Use appends to leave existing containers connected.
aliases: incremental
cacert_path
 no
Use a CA certificate when performing server verification by providing the path to a CA certificate file.
aliases: tls_ca_cert
cert_path
 no
Path to the client's TLS certificate file.
aliases: tls_client_cert
connected
 no
List of container names or container IDs to connect to a network.
aliases: containers
docker_host
 no 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'.
aliases: docker_url
driver
 no bridge
Specify the type of network. Docker provides bridge and overlay drivers, but 3rd party drivers can also be used.
driver_options
 no
Dictionary of network settings. Consult docker docs for valid options and values.
force
 no
With state absent forces disconnecting all containers from the network prior to deleting the network. With state present will disconnect all containers, delete the network and re-create the network. This option is required if you have changed the IPAM or driver options and want an existing network to be updated to use the new options.
ipam_driver
 no
Specify an IPAM driver.
ipam_options
 no
Dictionary of IPAM options.
key_path
 no
Path to the client's TLS key file.
aliases: tls_client_key
name
 yes
Name of the network to operate on.
aliases: network_name
ssl_version
 no 1.0
Provide a valid SSL version number. Default value determined by docker-py, currently 1.0.
state
 no present
  • absent
  • present
absent deletes the network. If a network has connected containers, it cannot be deleted. Use the force option to disconnect all containers and delete the network.
present creates the network, if it does not already exist with the specified parameters, and connects the list of containers provided via the connected parameter. Containers not on the list will be disconnected. An empty list will leave no containers connected to the network. Use the appends option to leave existing containers connected. Use the force options to force re-creation of the network.
timeout
 no 60
The maximum amount of time in seconds to wait on a response from the API.
tls
 no
Secure the connection to the API by using TLS without verifying the authenticity of the Docker host server.
tls_hostname
 no localhost
When verifying the authenticity of the Docker Host server, provide the expected name of the server.
tls_verify
 no
Secure the connection to the API by using TLS and verifying the authenticity of the Docker host server.

Examples

- name: Create a network
  docker_network:
    name: network_one

- name: Remove all but selected list of containers
  docker_network:
    name: network_one
    connected:
      - container_a
      - container_b
      - container_c

- name: Remove a single container
  docker_network:
    name: network_one
    connected: "{{ fulllist|difference(['container_a']) }}"

- name: Add a container to a network, leaving existing containers connected
  docker_network:
    name: network_one
    connected:
      - container_a
    appends: yes

- name: Create a network with options
  docker_network:
    name: network_two
    driver_options:
      com.docker.network.bridge.name: net2
    ipam_options:
      subnet: '172.3.26.0/16'
      gateway: 172.3.26.1
      iprange: '192.168.1.0/24'

- name: Delete a network, disconnecting all containers
  docker_network:
    name: network_one
    state: absent
    force: yes

Return Values

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

name description returned type sample
facts
Network inspection results for the affected network.
 success dict {}

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://docker-py.readthedocs.org/en/stable/machine/ for more details.

Status

This module is flagged as preview which means that it is not guaranteed to have a backwards compatible interface.

For help in developing on modules, should you be so inclined, please read Community Information & Contributing, Testing Ansible and Developing Modules.

© 2012–2018 Michael DeHaan
© 2018–2019 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/2.4/docker_network_module.html