使用Ansible部署最新的Docker容器

Question

I have been trying to get ansible to deploy my containers, and I have been successful with the following config, but the problem I am running into is that it will not start the most recent version of my container.

- name: Deploy
  hosts: staging
  tasks:
    - name: Install docker-py
      pip: name=docker-py
    - name: Pull latest container
      raw: docker pull org/proj:latest
    - name: Stop container
      docker:
        image="org/proj:latest"
        name=proj-rails
        state=stopped
    - name: Deploy container
      docker:
        image="org/proj:latest"
        name=proj-rails
        ports=80:80
        state=running

I can build and push new containers to docker hub and try to pull them down. On the server docker images lists the latest containers:

REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
org/proj            latest              9f0de94df28c        2 hours ago         675.5 MB
<none>              <none>              15f4bbbeebca        2 days ago          670.6 MB
<none>              <none>              f7958247ed52        2 days ago          670.3 MB

My problem is that ansible keeps starting 15f4bbbeebca (which is not the latest container). Can anyone help me figure out what is wrong?

Answer 1

Shot in the dark, but that syntax looks odd to me. Shouldn't it be

- name: Stop container
  docker:
    image: org/proj:latest
    name: proj-rails
    state: stopped

?

Also, why are you using raw rather than command (or shell)?

Answer 2

Is it possible that the issue arises from the misunderstood latest tag? see this https://medium.com/@mccode/the-misunderstood-docker-tag-latest-af3babfd6375#.hlzfep7mn

Answer 3

I fixed my issues by writing my own deployment solution and then open sourced it, https://github.com/mrinterweb/freighter

I designed freighter to be easily configurable and flexible at the same time. I hope someone finds it to be helpful. I am not finished with freighter yet, but it is usable at this point.

I realize that this does not answer the question about how to deploy docker with ansible, but I gave up on trying to deploy containers with ansible. I just did not find the ansible docker module to be mature enough, documented enough, or configurable to my needs.