docker_containers fact is empty when container already started

[Clément Prévost]

Hi all,

I've been trying the docker module as a way to provision containers for a local development environment.

I'm facing some issues.

- I declare only one host in my inventory named docker-host

- I expect the docker module to build an ssh-enabled base image and start some containers

- I register these containers via add_host

- I use these hosts on the rest of the playbook

This works well if those containers are not already started or if the requested container state is reloaded or restarted.

But when I request the started state, the docker_containers fact is empty.

- name: create docker containers
  hosts: docker-host
  tasks:
    - name: "ensure base image is build"
      docker_image: path="docker/docker-build-ubuntu-sshd-services" name="ubuntu/sshd-services" state=build

    - name: "ensure webapp container is started"
      docker:
        name: webapp
        image: ubuntu/sshd-services
        state: started # here, if state is "reloaded", everything works fine

    - name: "add webapp container as app-web in inventory"
      add_host: name="app-web" groups=app-web,env-dev ansible_ssh_host="{{ item.NetworkSettings.IPAddress }}" ansible_ssh_port=22 ansible_ssh_user=root ansible_ssh_pass=docker
      with_items: docker_containers

    - name: "show docker containers fact"

      debug: var=docker_containers

- name: Provision web server 
  hosts: app-web
  roles:
    - php
    - ...

Command output at the second run:

TASK [debug] *******************************************************************

ok: [localhost] => {

    "docker_containers": []

}

I couldn't find any documentation about this docker_containers fact, I just found it on this post of this mailing list. 

Am I on the wrong direction ?

Thanks for your help,

Regards

PS: more infos

- Python 2.7.6

- ansible-playbook 2.0.0.2

- Docker version 1.9.1, build a34a1d5

[Greg DeKoenigsberg]

So just curious: is there any reason you need to use "started" rather
than "reloaded" there?

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--
Greg DeKoenigsberg
Ansible Community Guy