[Novalug] Canonical LXD

greg pryzby greg@pryzby.org
Sun May 31 12:02:56 EDT 2015


Just you. LXD is the daemon for LXC is my guess.

Let's not go down this rabbit hole!

Cough, iPad, cough.

greg pryzby
mobile response
On May 31, 2015 11:44 AM, "Peter Larsen via Novalug" <
novalug@firemountain.net> wrote:

> Is it just me or is LXD too close to LSD to be a viable product name?
>
> On 05/31/2015 04:11 AM, Bryan J Smith via Novalug wrote:
> > Took a bit to wrap my head around LXD, but now I understand things far
> > better.  Once I got past the marketing of "run containers like virtual
> > machines," especially after someone else pointed out it's little
> > different in focus from Project Atomic, it made far more sense.
> >
> > It's basically Canonical's answer for a thin, lightweight Docker host,
> > with a few, brand new, innovative LXC 1.1+ options in kernel 3.13+.
> >
> > In-a-nutshell ...
> > - Still uses LXC, cgroups [A], namespaces, etc...
> > - Can still leverage Docker packaging
> >   (it's not a competitor, there's a lot of FUD out there stating
> otherwise)
> >
> > The new or differing features ...
> > - Offers the new "unprivileged" container option in LXC 1.x (1.1 used)
> > and the latest kernel (3.13+ used)
> > - Uses AppArmor (capabilities?), instead of Multi Container Security
> > (MCS, via security labels)
> > - Doesn't attempt to support any legacy interfaces -- E.g.,
> >   no libvirt-lxc (which is always debated, given libvirt has heavily
> VM-centric)
> >   provides it's own, OpenStack plugin (separate from other OpenStack
> > efforts or legacy interfaces)
> >
> > So basically it's the Atomic Host [B] for the Ubuntu world, and tied
> > to a lot of leading edge developments in Ubuntu, while Atomic Host has
> > been more Fedora-based centric.
> >
> > That said ... leveraging the "unprivileged" model is a nice bonus,
> > although there's a lot of FUD there too.  E.g., it's still new, and
> > people are wanting to compare Ubuntu v. RHEL, which is not
> > apples-to-oranges.  I.e., Ubuntu LTS 14.04 is still on an older
> > kernel, like RHEL 7, while both Ubuntu (non-LTS) and Fedora have newer
> > kernels, with the newer, "unprivileged" support.
> >
> > There should be nothing to stop Fedora 22 Atomic Host from being able
> > to do the same.  In any case, that feature is still new, and there
> > will be lots of integration issues.
> >
> > I've even seen some comparisons to OpenVZ, but I'm ignorant of OpenVZ
> > other than seeing a lot of people swear by it, even though it's been
> > continually rejected upstream. [C]
> >
> > -- bjs
> >
> > NOTES:
> >
> > [A] If the release is systemd, then systemd controls the cgroups instead
> of LXC.
> >
> > [B] I won't bring up more DevOps-centric (not so much general
> > platform) OpenShift here, especially since v3 integrates Kubernetes
> > with Docker and Atomic Host.  I.e., it's hard to bring up OpenShift,
> > because it started (v1) doing the same with just namespaces + cgroups
> > + SELinux for confinement, adding LXC, then Docker, etc... as they
> > became available.  OpenShift is one of those Red Hat products that too
> > many people don't know about, but has been providing a production
> > solution for some time.  Just like when people say "KVM doesn't do
> > management like VMware," that's not true, but proliferated, because
> > people just don't know about Red Hat Enterprise Virtualization (RHEV-H
> > ~ ESXi like RHEV-M ~ vSphere), including storage management ("Live
> > Migrate" ~ vMotion(TM)), VDI, etc... built-in.
> >
> > [C] Someone made the correlation that some concepts/interfaces in LXD
> > are not unlike OpenVZ.  They also noted that since OpenVZ has never
> > been accepted upstream, LXD might appeal to those users.  But I've
> > never used OpenVZ, so I'm not sure if it's really like OpenVZ.  For
> > all I know, that was a "loose correlation," and OpenVZ is like LXD as
> > much as Atomic Host for that matter (and the person who made the
> > comment didn't know about Atomic Host).
> >
> >
>
>
> --
> Regards
>   Peter Larsen
>
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