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[[Category: HOWTO]]
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DRAFT - still in the works
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[[Category: Templates]]
 
  
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This guide requires that you already have a CentOS 6 - If you do not have CentOS 6 installed, do it in KVM or VirtualBox or even use an already existing CentOS 6 container.
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This guide requires that you already have a CentOS 6 (Having 5 might also work) - If you do not have CentOS 6 installed, do it in KVM or VirtualBox or whatever you want.
  
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At a CentOS 6 host as root do:
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At a CentOS 6 host do:
  
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yum install yum-utils
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yum install yum-utils
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yumdownloader centos-release
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yumdownloader centos-release.x86_64
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mkdir -p /newroot/var/lib
 
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touch /newroot/var/lib/random-seed #without it, the initscript installation script will fail
 
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rpm --rebuilddb --root=/newroot
 
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rpm -i --root=/newroot --nodeps centos-release-6-5.el6.centos.11.2.x86_64.rpm
 
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yum --installroot=/newroot install -y rootfiles openssh-clients openssh-server yum yum-utils man wget sudo tar passwd
 
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yum --installroot=/newroot clean all
 
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ln -s /proc/mounts /newroot/etc/mtab
 
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rm -f /newroot/dev/null
 
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mknod -m 600 /newroot/dev/console c 5 1
 
  
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Create /newroot/etc/fstab that looks like this:
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mkdir -p /newroot/var/lib/
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none /dev/pts devpts rw,gid=5,mode=620 0 0
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touch /newroot/var/lib/random-seed #without it, the initscript installation script will fail
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none /dev/shm tmpfs defaults 0 0
 
  
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Edit /newroot/etc/sysconfig/init
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  rpm --rebuilddb --root=/newroot
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Change the line
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  rpm -i --root=/newroot --nodeps centos-release-6-3.el6.centos.9.x86_64.rpm
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ACTIVE_CONSOLES=/dev/tty[1-6]
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  yum --installroot=/newroot install -y openssh-clients openssh-server yum yum-utils man wget sudo tar passwd
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to
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  # if you want a extremely minimal installation only install yum
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ACTIVE_CONSOLES=
 
  
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Change timezone (if needed)
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  yum --installroot=/newroot clean all  # not sure if that is really needed
  
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rm /newroot/etc/localtime <br />
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  ln -s /proc/mounts /newroot/etc/mtab
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ln -s /usr/share/zoneinfo/Your/Timezone /newroot/etc/localtime
 
  
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The only thing missing is to create a tarball of our new root.
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/newroot/etc/fstab should look like this:
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tar zcf /vz/template/cache/centos-6-x86_64.tar.gz -C /newroot .
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  none /dev/pts devpts rw,gid=5,mode=620 0 0
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  none /dev/shm tmpfs defaults 0 0
  
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You probably want to get rid of /newroot<br />
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  rm -f /newroot/dev/null
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rm -rf /newroot
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  mknod -m 600 /newroot/dev/console c 5 1
  
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And you are done!
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#if you want (not sure about this. If they are there, mingettys will run. On the other hand, if you upgrade your CentOS VPS in OpenVZ they would probably be recreated)
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 rm /newroot/etc/init/start-ttys.conf /newroot/etc/init/tty.conf
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  tar zcf /vz/template/cache/centos-6-x86_64.tar.gz .

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