Greetings,
The subject of this email might horrify the V7 developers with the ongoing
development and testing of Virtuozzo 7, but there is a fairly obvious way to
use OpenVZ Legacy OS Templates with Virtuozzo 7 Beta. First, on your V7 host
make sure you install all of the ez template meta-data packages:
centos-5-x86-ez-7.0.0-2.vz7.noarch
centos-6-x86_64-ez-7.0.0-1.vz7.noarch
centos-7-x86_64-ez-7.0.0-5.vz7.noarch
debian-8.0-x86_64-ez-7.0.0-2.vz7.noarch
ubuntu-14.04-x86_64-ez-7.0.0-2.vz7.noarch
The CentOS ones should already be there but not Debian and Ubuntu.
1) Create a container using the OS Template that is closest to your target
OpenVZ Legacy OS Template. Please note that CentOS 5 uses SysVinit, CentOS 6
uses Upstart, and CentOS 7 uses systemd. Debian 8 uses systemd whereas Ubuntu
uses Upstart.
2) mount your new container
3) cd into /vz/root/{ctid} and delete everything... removing all of the files
that were part of the container you just created
4) Extract the contents of your target OpenVZ Legacy OS Template in the same
place you just deleted everything
5) umount the container
6) Start the container
If everything went well your container will start and you'll see the normal set
of processes you'd expect. Hopefully networking is configured correctly, etc.
If so, you can use prlctl's clone parameter to make additional containers... or
use the clone command with the --template flag to turn the existing container's
filesystem into a new OS Template.
While that recipe is a fairly sloppy way to do it, it'll at least let us try
additional container types... and even have a basis for submitting contributed
OS Templates (which there isn't a process nor storage place for yet) at some
point in the future. A better way of doing it would be to make additional ez
template meta-data packages... or use a manual way to create new OS Templates
once the community is more familiar with the pre-created OS Template format
used by V7... but we aren't quite there yet.
Using the basic recipe above, I converted a CentOS 7 container to a Fedora 22
container... and it seems to be working nicely. I haven't tried any others yet
so it may be that I was just lucky with this combination... but if anyone else
tries other OpenVZ Legacy OS Templates and gets them to work, please let me
know. Feel free to email me directly if desired.
TYL,
--
Scott Dowdle (dow...@montanalinux.org)
704 Church Street
Belgrade, MT 59714
(406)388-0827 [home]
(406)994-3931 [work]
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