How to bind volumes in docker-py?

Question

I think this used to work up to a few months ago. The regular commandline docker:

>> docker run --name 'mycontainer' -d -v '/new' ubuntu /bin/bash -c 'touch /new/hello.txt'
>> docker run --volumes-from mycontainer ubuntu /bin/bash -c 'ls new'
>> hello.txt

works as expected but I cannot get this to work in docker-py:

from docker import Client #docker-py
import time

docker = Client(base_url='unix://var/run/docker.sock')
response1 = docker.create_container('ubuntu', detach=True, volumes=['/new'],
    command="/bin/bash -c 'touch /new/hello.txt'", name='mycontainer2')
docker.start(response1['Id'])
time.sleep(1)
response = docker.create_container('ubuntu', 
    command="/bin/bash -c 'ls new'", 
    volumes_from='mycontainer2')
docker.start(response['Id'])
time.sleep(1)
print(docker.logs(response['Id']))

..always tells me that new doesn't exist. How is volumes-from supposed to be done with docker-py?

josepainumkal · Accepted Answer · 2017-05-11T21:26:03.140

Below is the current working way to do volume bindings:

volumes= ['/host_location']
volume_bindings = {
                    '/host_location': {
                        'bind': '/container_location',
                        'mode': 'rw',
                    },
}

host_config = client.create_host_config(
                    binds=volume_bindings
)

container = client.create_container(
                    image='josepainumkal/vwadaptor:jose_toolUI',
                    name=container_name,
                    volumes=volumes,
                    host_config=host_config,
) 
response = client.start(container=container.get('Id'))

How would you do this with named volumes that are already running? — Connor, Sep 30 '18 at 07:08

score 5 · Answer 2 · answered Nov 27 '16 at 09:03

The original answer has been deprecated in the api and no longer works. Here is how you would do it by using the create host config commands

import docker

client = docker.from_env()

container = client.create_container(
    image='ubuntu',
    stdin_open=True,
    tty=True,
    command='/bin/sh',
    volumes=['/mnt/vol1', '/mnt/vol2'],

    host_config=client.create_host_config(binds={
        '/tmp': {
            'bind': '/mnt/vol2',
            'mode': 'rw',
        },
        '/etc': {
            'bind': '/mnt/vol1',
            'mode': 'ro',
        }
    })
)
client.start(container)

score 2 · Answer 3 · edited Jul 21 '14 at 11:42

2

Starting from docker api version 1.10 volumes-from is an argument to start() instead of create()

Available from docker-py release 0.3.2

Pull request which introduced the change: https://github.com/dotcloud/docker-py/pull/200

edited Jul 21 '14 at 11:42

Community

1
1

answered Apr 28 '14 at 23:55

Jasper van den Bosch

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The mentioned change is available from [docker-py 0.3.2](https://github.com/dotcloud/docker-py/tree/0.3.2) – Ivan Fraixedes Jul 21 '14 at 11:38

How to bind volumes in docker-py?

3 Answers3

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