Re: Can someone explain containers, pods, docker, etc. please
Chris Green <cl@isbd.net> wrote:
> Todd Zullinger <tmz@pobox.com> wrote:
> > [-- text/plain, encoding quoted-printable, charset: us-ascii, 25
> > lines --]
> >
> > Chris Green wrote:
> > > I'm trying to get my mind round the various ways of
> > > wrapping/isolating collections of code and programs in Debian
> > > (well in any Linux I suppose) and I'm really not understanding
> > > them very well. When you go to the home of any particular one it
> > > seems to think you know what it is already and thus goes from
> > > there to tell you how to install it but doesn't really explain
> > > what it does.
> >
> > Containers are similar to virtual machines in effect.
> > Compared to full virtualization, they have much lower
> > overhead (which can be great) and much less isolation
> > between the host and container (which can be not so great).
> >
> > Since they don't run their own kernel, they don't boot, so
> > starting a container takes a trivial amount of time compared
> > to starting a virtual machine.
> >
> > Try either or both of these for more details:
> >
> > https://ubuntu.com/blog/what-are-linux-containers
> > https://www.redhat.com/en/topics/containers/whats-a-linux-container
> >
> Thanks, the Ubuntu blog in particular has given me a lot of help.
There's another article at https://lwn.net/Articles/902049/ that may
also help.
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