To me the most interesting things here are that the kernel(and CPU's) will be getting hardware assisted process isolation as well as advancements being made around CRIU to support live migrating processes(and potentially entire cgroup trees?).
This is good for everyone. Docker doesn't even use liblxc anymore by default, it uses libcontainer. Wonder why Ubuntu isn't getting behind libcontainer.. In any case, the stuff being pushed to upstream projects, like the kernel, will flow back down to docker and everybody can enjoy new awesomeness.
> Docker doesn't even use liblxc anymore by default, it uses libcontainer. Wonder why Ubuntu isn't getting behind libcontainer.
Because not everyone wants what docker offers. Some people prefer and want the more VM-esque behaviour provided by LXC.
To me LXC is the real deal, while docker offers limited convenience at the cost of flexibility and platform lock-in. And I have zero interest in that.
I hope Ubuntu continues to offer good LXC-support, and then docker (or whatever the other hip thing of the month is) can do whatever docker does, because it's external to whatever distro people is running.
> Because not everyone wants what docker offers...
Yes, I can understand this, but more specifically? That's hardly in the way of reasons.
> To me LXC is the real deal, while docker offers limited convenience at the cost of flexibility and platform lock-in.
I'm not really sure what makes liblxc the "real deal" and "libcontainer" not? Would you care to expand on this though? The true flexibility you are alluding to is, I believe, provided by the kernel itself? Are you deriding libraries that abstract interfacing with these features? Where is the platform lock-in coming from? Docker has been making inroads into many non-linux platforms, even Windows recently.
> and then docker (or whatever the other hip thing of the month is)
Are you suggesting Docker is a "flavour of the month"? That's... A unique perspective. In any case, as a counter point, I'd like to offer up that RedHat itself has partnered with docker via OpenShift. If one were looking for linux flavour of the month, I RedHat would be the LAST place they would look.
This is good for everyone. Docker doesn't even use liblxc anymore by default, it uses libcontainer. Wonder why Ubuntu isn't getting behind libcontainer.. In any case, the stuff being pushed to upstream projects, like the kernel, will flow back down to docker and everybody can enjoy new awesomeness.