[Lxc-users] Proper way to use LXC to serve multiple apps execution from outside

[Đỗ Hoàng Khiêm]

Thanks Ben for your advices.

Ok, let suppose that I use a single container handling multiple requests.
So can you describe a right strategy to serve many applications at same
time, in my naive thinking, I would invoke such command like "lxc-execute
-n *my-lxc-name* *command_to_execute args*",  but is it possible to execute
it simultaneously, as I see that when I started a container, I can't run
lxc-execute for this container from host machine.

On Thu, May 10, 2012 at 12:42 AM, Ben Butler-Cole <ben at bridesmere.com>wrote:

> On 8 May 2012 10:13, Đỗ Hoàng Khiêm <dohoangkhiem at gmail.com> wrote:
>
>> Suppose that I want to build a system to serve many app. execution
>> requests from outside, and I want each app will have an isolated
>> environment to run, so each time process an  execution request I have to
>> create a container for this request then execute app and destroy container?
>> Or create one container to serve all?
>>
>
> Unless your application really needs a completely clean environment for
> each request, it is probably better to have a single container handling
> multiple requests. Otherwise the overhead of creating a new container will
> unnecessarily increase your latency for each request and the load on your
> server.
>
> There are advantages, though, in doing as you suggest and creating a
> separate container for each application. It gives you an easy way to impose
> strict isolation of the applications, constrain the resources available to
> them and simplify management of them as atomic systems.
>
> If I create an own container for each app, is there any problem if many
>> apps run at same time, as I see that each container has its own rootfs in
>> /var/lib/lxc with size about 300MB in my machine (I've to installed some
>> additional packages, runtime environments in the container, eg. Python,
>> Ruby runtime env.), so 100 apps. run at same time will consume about 30GB
>> in hard drive?
>>
>
> You could possibly limit the disk space required by using btrfs. But you
> need to consider the memory requirements as well (and the CPU requirements
> if many of the applications are likely to be handling requests at the same
> time).
>
> 100 applications (running in 100 separate containers) sounds like an awful
> lot to me.
>
> -Ben
>
>
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