docker_swarm_info – Retrieves facts about Docker Swarm cluster

• Synopsis
• Requirements
• Parameters
• Notes
• Examples
• Return Values
• Status

Synopsis

• Retrieves facts about a Docker Swarm.
• Returns lists of swarm objects names for the services - nodes, services, tasks.
• The output differs depending on API version available on docker host.
• Must be run on Swarm Manager node; otherwise module fails with error message. It does return boolean flags in on both error and success which indicate whether the docker daemon can be communicated with, whether it is in Swarm mode, and whether it is a Swarm Manager node.

Requirements

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

• Docker API >= 1.24
• Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details).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 >= 1.10.0 (use docker-py for Python 2.6)

Parameters

Notes

Examples

- name: Get info on Docker Swarm
  docker_swarm_info:
  ignore_errors: yes
  register: result

- name: Inform about basic flags
  debug:
    msg: |
      Was able to talk to docker daemon: {{ result.can_talk_to_docker }}
      Docker in Swarm mode: {{ result.docker_swarm_active }}
      This is a Manager node: {{ result.docker_swarm_manager }}

- block:

- name: Get info on Docker Swarm and list of registered nodes
  docker_swarm_info:
    nodes: yes
  register: result

- name: Get info on Docker Swarm and extended list of registered nodes
  docker_swarm_info:
    nodes: yes
    verbose_output: yes
  register: result

- name: Get info on Docker Swarm and filtered list of registered nodes
  docker_swarm_info:
    nodes: yes
    nodes_filter:
      name: mynode
  register: result

- debug:
    var: result.swarm_facts

- name: Get the swarm unlock key
  docker_swarm_info:
    unlock_key: yes
  register: result

- debug:
    var: result.swarm_unlock_key

Return Values

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

Status

• This module is not guaranteed to have a backwards compatible interface. [preview]
• This module is maintained by the Ansible Community. [community]

Authors

• Piotr Wojciechowski (@WojciechowskiPiotr)