Proposed F19 Feature: High Availability Container Resources

[Daniel J Walsh]

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On 01/29/2013 03:17 PM, Glauber Costa wrote:
>>>> = Features/ High Availability Container Resources = 
>>>> https://fedoraproject.org/wiki/Features/High_Availability_Container_Resources
>>>>
>>>>
>>>> 
Feature owner(s): David Vossel <dvossel at redhat.com>
>>>> 
>>>> The Container Resources feature allows the HA stack (Pacemaker + 
>>>> Corosync) residing on a host machine to extend management of
>>>> resources into virtual guest instances (KVM/LXC).
>>> 
>>> Is this about LXC or libvirt-lxc? These two are entirely different 
>>> projects, sharing no code, which makes me wonder which project is 
>>> meant here?
>> 
>> Yep, I left that vague and should have used the term "linux containers"
>> instead of LXC.  I'm going to update the page to reflect this.
>> 
>> This feature architecturally doesn't care which project manages/initiates
>> the container.  All we care about is that the container has it's own
>> isolated network namespace that is reachable from the host (or whatever
>> node is remotely managing the resources within the container)  I
>> intentionally chose to use tcp/tls as the first transport we will support
>> to avoid locking this feature into use with any specific virt
>> technology.
>> 
>> With that said, I'm likely going to be focusing my test cases on
>> libvirt-lxc just because it seems like it has better fedora support.  The
>> LXC project appears to be moving all over the place.  Part of the project
>> is really to identify good use-cases for linux containers in an HA
>> environment.  The kvm use-case is fairly straight forward and well
>> understood though.  I'll update the page to list the linux container
>> use-case as a possible risk.
> 
> Please also keep in mind that LXC usually refers to a specific project,
> either the original "lxc" code or "libvirt-lxc". We have either Container
> Solutions in Fedora, like OpenVZ.
> 
> You may be able to reach a broader base by making your solution work on
> that too (and of course, I'd be more than happy to help to trim any issues
> you may find)
> 
> -- E Mare, Libertas
> 
I would like to also understand how we can work together with virt-sandbox.
(Secure Linux Containers)
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