| Re: OS/app in the OpenVZ container [message #44423 is a reply to message #44038] |
Wed, 07 December 2011 04:23  |
Enrico Weigelt
Messages: 31
Registered: July 2006
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Member |
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* Kir Kolyshkin <kir@openvz.org> wrote:
> It's pretty simple. What OpenVZ kernel does it creates a container and
> runs /sbin/init inside it. What goes next is up to that particular
> /sbin/init. If you need to run an app let /sbin/init run just it, or let
> this app be /sbin/init (but bear in mind there will be no child reaper
> as in usual linux system so you might need to take some extra care about
> zombie processes).
ACK.
The probably easiest way is to take some minimal OS image, so you also
get a shell, libc, and essential setups (mounting /proc and /sys), etc.
You'll most likely also need some little setup stuff to let your app
communicate with the outside world (eg. routing, filesystem access, etc).
Doing this all completely on your own takes a lot of more efforts,
but makes a good learning project :)
Some time ago (left it aside due lack of time), I've been working on
an kind of nano-distro for such use-cases, built with my Briegel
buildsystem (it crosscompiles tiny images which only include the
really essential stuff) . If you're really interested, I'd dig it
out again.
cu
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Enrico Weigelt, metux IT service -- http://www.metux.de/
phone: +49 36207 519931 email: weigelt@metux.de
mobile: +49 151 27565287 icq: 210169427 skype: nekrad666
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Embedded-Linux / Portierung / Opensource-QM / Verteilte Systeme
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