module docker : dynamic port binding problem

[Herve Leclerc]

Hello

Ansible 1.9 - docker-py 0.71 - docker version 1.4.1

I'm trying to do in a playbook this docker command line

 docker run --name projetx -d -v /Users/hleclerc/tmp/data/projetx/mysql:/var/lib/mysql -p :3306 -e MYSQL_ROOT_PASSWORD=pwd projetx/mysql

docker ps :

4876cb21a372        projetx/mysql:latest "/usr/local/bin/run"   4 seconds ago       Up 3 seconds   0.0.0.0:49193->3306/tcp  projetx

A dynamic port is allocated

Here is the playbooks :

1: 

- name: Starting MySQL container
    docker:
      detach: true
      image: "projetx/mysql"
      name:  "projetx"
      ports: "::3306"
      env: "MYSQL_ROOT_PASSWORD=pwd"
      volumes:
        - "/Users/hleclerc/tmp/data/projetx/mysql:/var/lib/mysql"
   

With this syntax if i do a docker ps : 

f84b89180678        projetx/mysql:latest       "/usr/local/bin/run"   About a minute ago   Up About a minute           3306/tcp

if i change ports with    

ports: 3306 

a docker ps will display

6cb9843603f7        projetx/mysql:latest  "/usr/local/bin/run"   8 seconds ago       Up 7 seconds     0.0.0.0:0->3306/tcp

if i change ports with ':3306' i get this error from ansible 

 bind = ('0.0.0.0', int(parts[0]))

ValueError: invalid literal for int() with base 10: ''

How can i have a correct behaviour ?

in advance thanks 

[Brian Coca]

remove the colon's from the port setting

ports: 3306

--
Brian Coca

[Herve Leclerc]

Hello

If i do it i've this

ports: 3306 

a docker ps display

6cb9843603f7 projetx/mysql:latest  "/usr/local/bin/run"   8 seconds ago Up 7 seconds  0.0.0.0:0->3306/tcp

This not good i should have 0.0.0.0:someDynamicPort->3306 and not 0

[Herve Leclerc]

For information with docker-py :

from docker.client import Client
from docker.utils import kwargs_from_env
kwargs = kwargs_from_env()
kwargs['tls'].assert_hostname = False
client = Client(**kwargs)
container_id = client.create_container(image="busybox", ports=[3306] , command="sleep 30000000")
client.start(container_id, port_bindings={3306: ('127.0.0.1',{})})

give me a correct behaviour

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
513db4e06837 busybox:latest "sleep 30000000" 3 seconds ago Up 3 seconds        127.0.0.1:49154->3306/tcp   sad_mclean

The problem is somewhere in docker module / parse

[Herve Leclerc]

Finally i make it works you need both expose and ports parameters

- name: Starting MySQL container
    docker:
      detach: true

      expose: 3306
      publish_all_ports: true

      image: "projetx/mysql"
      name:  "projetx"
      ports: 3306

      debug: true
      env: "MYSQL_ROOT_PASSWORD=password"
      volumes:
        - "/Users/hleclerc/tmp/data/projetx/mysql:/var/lib/mysql"
      docker_url: "http://192.168.59.103:2375"
      state: present
    register: out

f5d49bd72ac0 projetx/mysql:latest "/usr/local/bin/run" 3 minutes agoUp 3 minutes        0.0.0.0:49155->3306/tcp  projetx

ttms