Oh, I figured out the root cause. It's the permission.
After added the user to the docker group, I can run docker commands now.
$sudo gpasswd -a ${USER} docker
Docker snap works perfectly! Thanks.
On Tue, Nov 1, 2016 at 6:26 PM, Peng Liu <pengliu.m...@gmail.com> wrote:
> Hi Loïc,
>
> I also realized that might be a problem in an old version. So I upgraded
> the snapd to the latest version.
>
> $ snap --version
> snap 2.16ubuntu3
> snapd 2.16ubuntu3
> series 16
> ubuntu 16.04
>
> 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'.
>
> Thanks.
>
> Peng
>
> On Tue, Nov 1, 2016 at 11:06 AM, Loïc Minier <loic.min...@ubuntu.com>
> wrote:
>
>> Hi,
>>
>> What's the output of snap --version?
>>
>> Thanks!
>> - Loïc Minier
>>
>> On Tue, Nov 1, 2016 at 4:21 AM, Peng Liu <pengliu.m...@gmail.com> wrote:
>>
>>> Hi Loïc,
>>>
>>> I encountered some errors when I tried to connect the interfaces, for
>>> example:
>>> ========================================================
>>> 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
>>> hello-world"
>>>
>>> Did I miss something? Is there anything need to do after installing the
>>> docker snap?
>>> Thanks.
>>>
>>> Peng
>>>
>>> On Tue, Oct 18, 2016 at 6:48 AM, Loïc Minier <loic.min...@ubuntu.com>
>>> wrote:
>>>
>>>> Hi!
>>>>
>>>> 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,
>>>> i386.
>>>>
>>>> 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
>>>> <https://docs.google.com/document/d/1JHa6tkuR9PtpnAVVmAJIAKuyKBy8E9ZkvG5Wbc6HZSY/edit?usp=sharing>
>>>> !
>>>>
>>>> Have fun and please report issues against https://github.com/doc
>>>> ker-snap/docker
>>>>
>>>> Cheers,
>>>> - Loïc Minier
>>>>
>>>> --
>>>> Snapcraft mailing list
>>>> Snapcraft@lists.snapcraft.io
>>>> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailm
>>>> an/listinfo/snapcraft
>>>>
>>>>
>>>
>>
>>
>> --
>> - Loïc
>>
>
>
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