Confined Docker snap available
pengliu.mail at gmail.com
Tue Nov 1 23:26:49 UTC 2016
I also realized that might be a problem in an old version. So I upgraded
the snapd to the latest version.
$ snap --version
And I tried to install the docker from both stable and edge channel.
In both cases, the plug and slot can not connect problems have gone. But I
am still not able to figure out how to run a simple hello world docker.
$ docker run ubuntu /bin/echo 'Hello world'
docker: Cannot connect to the Docker daemon. Is the docker daemon running
on this host?.
See 'docker run --help'.
On Tue, Nov 1, 2016 at 11:06 AM, Loïc Minier <loic.minier at ubuntu.com> wrote:
> What's the output of snap --version?
> - Loïc Minier
> On Tue, Nov 1, 2016 at 4:21 AM, Peng Liu <pengliu.mail at gmail.com> wrote:
>> Hi Loïc,
>> I encountered some errors when I tried to connect the interfaces, for
>> sudo snap connect docker:docker-cli docker:docker-daemon
>> error: cannot perform the following tasks: - Connect docker:docker-cli to
>> docker:docker-daemon (cannot connect plug "docker-cli" from snap "docker",
>> no such plug) ========================================================
>> Then I am not able to run a simple docker command like "docker run --rm
>> Did I miss something? Is there anything need to do after installing the
>> docker snap?
>> On Tue, Oct 18, 2016 at 6:48 AM, Loïc Minier <loic.minier at ubuntu.com>
>>> Docker is since some days available as a properly confined snap. This
>>> will work on top of classic Ubuntu 16.04+ or on top of an up-to-date Ubuntu
>>> Core series 16.
>>> Because the docker.sock path is hardcoded in a lot of images, this snap
>>> conflicts with docker debs, so make sure you remove them first:
>>> sudo apt purge docker docker-engine
>>> Create a system group for docker:
>>> sudo groupadd --system docker
>>> Install the snap:
>>> sudo snap install docker
>>> And connect the interfaces (these will go away we have a
>>> snap-declaration in place):
>>> sudo snap connect docker:docker-cli docker:docker-daemon
>>> sudo snap connect docker:firewall-control ubuntu-core:firewall-control
>>> sudo snap connect docker:support ubuntu-core:docker-support
>>> sudo service snap.docker.dockerd stop
>>> sudo service snap.docker.dockerd start
>>> You're now ready to use docker, e.g.:
>>> sudo /snap/bin/docker run --rm -it hello-world
>>> sudo /snap/bin/docker run --rm -it ubuntu
>>> At the moment, the Docker snap is available for amd64, armhf, arm64,
>>> Docker-compose is also included, and may be used with the
>>> "docker.compose" command.
>>> Want to read more about docker? Read the Docker snap status and FAQ doc
>>> Have fun and please report issues against https://github.com/doc
>>> - Loïc Minier
>>> Snapcraft mailing list
>>> Snapcraft at lists.snapcraft.io
>>> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailm
> - Loïc
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