How to convert a KVM image in to an openvz container in Proxmox?

Discussion in 'HOWTO-Related Questions' started by kumarullal, Jun 25, 2009.

  1. kumarullal

    kumarullal New Member

    Hi Falko,
    I followed your article "How To Convert Physical Systems And Xen VMs Into OpenVZ Containers (Debian Etch)"
    I need some clarification.
    I am using proxmox. So KVM and openvz reside on the same system.
    I have setup up a kvm image of centos based asterisk system just the way I want it. Now, I want to convert that into an openvz container.

    so what should I do to apply your instructions in proxmox's context.

    You instructions

    " server1/server2:

    apt-get install rsync

    Now let's transfer server1's files to the OpenVZ container:

    server2:

    rsync -arvpz --numeric-ids --exclude dev --exclude proc --exclude tmp -e "ssh -l [email protected]" [email protected]:/ /vz/private/211/ "

    After that is answered, what value should I put in your example
    " vzctl set 211 --ostemplate debian-4.0-i386-minimal --save "

    The Os is centos 5.

    Thanks in advance
    kumar
     
    Last edited: Jun 25, 2009
  2. kumarullal

    kumarullal New Member

    Got stuck

    I could rsync my asterisk pbx based on Centos 5 with Ip 192.168.45.6 to my Proxmox server 192.168.45.183

    It imported the files and everything.
    According to your instructions

    vzctl set 211 --onboot yes --save
    vzctl set 211 --hostname server1.example.com --save
    vzctl set 211 --ipadd 192.168.0.100 --save
    vzctl set 211 --numothersock 120 --save
    vzctl set 211 --nameserver 145.253.2.75 --nameserver 213.191.92.86 --save
    vzctl set 211 --diskspace 10000000:11000000 --save

    How do I set Swap and memory ?

    Next,
    I followed the remaining instructions

    sed -i -e '/getty/d' /vz/private/211/etc/inittab
    rm -f /vz/private/211/etc/mtab
    ln -s /proc/mounts /vz/private/211/etc/mtab

    cp /vz/private/211/etc/fstab /vz/private/211/etc/fstab.old
    grep devpts /vz/private/211/etc/fstab.old > /vz/private/211/etc/fstab
    mkdir /vz/private/211/dev
    mknod --mode 666 /vz/private/211/dev/ptmx c 5 2
    mkdir /vz/private/211/dev/pts
    cp -a /dev/ttyp* /dev/ptyp* /vz/private/211/dev/
    rm -f /vz/private/211/dev/null
    mknod --mode 666 /vz/private/211/dev/null c 1 3
    mknod --mode 444 /vz/private/211/dev/urandom c 1 9
    mkdir /vz/private/211/proc

    But I got stuck at
    cat /dev/null > /vz/private/211/etc/network/interfaces

    Since I have Centos Running, I dont have the interfaces file.
    So which is the file equivalent to interfaces, in Centos
    For example
    the path to all the config files in Centos is
    /vz/private/211/etc/sysconfig/network-scripts.
    Then there are number of files there.
    So which is the correct file.

    And finally

    According to your command
    cat /dev/null > /vz/private/211/etc/network/interfaces
    When I lookup up the /dev/null file, it is totally empty.
    So why is this step required?

    Thanks in advance.
     
  3. falko

    falko Super Moderator ISPConfig Developer

    I haven't tried this with CentOS, but I guess it's /etc/sysconfig/network-scripts/ifcfg-eth0. According to http://wiki.openvz.org/Physical_to_container you must set
    Code:
    ONBOOT=no
    in that file.
     

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