[Lxc-users] Launch multiple apps in exactly on container

[Jue Hong]

Great news! I'll have a try.

Thank you Daniel!

On Thu, Sep 16, 2010 at 6:05 PM, Daniel Lezcano <daniel.lezcano at free.fr> wrote:
> On 09/16/2010 10:56 AM, Jue Hong wrote:
>>
>> Sure Daniel, what you say actually works. But I still want to know,
>> whether I can launch another app into a running container.
>>
>> Doing as you say:
>>
>>>
>>> lxc-execute -n foo /bin/bash  -- this bash runs inside container 'foo'
>>> lxc-execute -n bar /bin/bash  -- this bash runs inside container 'bar'
>>>
>>
>> the 2nd bash will run in a different container named 'bar': e.g.
>> /dev/cgroup/bar.
>> What if I want to launch another app, like helloworld, inside the
>> first running container 'foo'?
>>
>
> Ah, ok. Sorry I misunderstood your question. This is not yet supported
> because there is a missing feature in the kernel.
> Hopefully, the kernel modification providing this functionality is ready and
> the author said he will submit it this week or next week, so that will be
> possible in a near future.
>
> This feature is very important because it allows build a set of scripts to
> facilitate container management from the outside like shutdown, netstat, etc
> ...
>
> If you wish to experiment this feature, it is available at:
>
> http://lxc.sourceforge.net/patches/linux/
>
> and the command using it is lxc-attach, which is already available with the
> 0.7.2 version.
>
> At this point, it's experimental but very usable. I will be happy to have
> feedbacks ;)
>
> Thanks
>  -- Daniel
>
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-- 
Jue Hong (洪爵)
Department of Network Infrastructure
Tencent Company, Shenzhen, China