Can't find any examples where docker_* modules are used together

[cen1]

SUMMARY

I can't find any examples in the documentation how to combine modules together. Specifically,

1. Init swarm
2. Add some labels to each node

While docker_swarm runs on the ansible host, docker_node by default connects to local docker. docker_swarm does not register any cluster information which I could use in docker_node so I assume an intermediate task docker_swarm_info is needed to get the node list and then iterate over that list. However, docker_swarm_info also requires a docker_host param to connect to the cluster. I think? using ansible_host should do it, but then I also need to have conditionals for manager node.. but I only need to set the labels once so I probably just need a single task that connects on the manager n.o. 1 and skip all other hosts..

A simple straightforward example in the docs would be really nice.

ISSUE TYPE

• Documentation Report

COMPONENT NAME

• docker_swarm
• docker_swarm_info
• docker_node

[cen1]

This is the best I could come up with. Not including docker_swarm since it does not really contribute to the end goal.

- name: Get list of nodes in Docker Swarm
  docker_swarm_info:
    nodes: true
  register: docker_swarm_info
  when: inventory_hostname in groups['managers'][0]

- name: Add node labels
  docker_node:
    labels_state: replace
    hostname: "{{ item.ID }}"
    labels:
      mykey: mylabel
  loop: "{{ hostvars[groups['managers'][0]]['docker_swarm_info']['nodes'] }}"
  when: inventory_hostname in groups['managers'][0]