follow these steps:

<pre>

vzctl create CTID --ostemplate centos-4-i386-minimal --config CONFIG_TEMPLATE --ipadd container_IP --hostname temp

vzctl set CTID --nameserver NAMESERVER_IP --save

</pre>

<pre>

vzctl enter CTID

</pre>

<pre>

rpm -Uvh http://mirror.centos.org/centos/5/os/i386/CentOS/centos-release-notes-5.5-0.i386.rpm

Note: centos-release-5 depends on notes-package, start with that one.

<pre>

tar -cf dev.tar ./dev

</pre>

<pre>

rpm -Uvh http://mirror.centos.org/centos/5/os/i386/CentOS/initscripts-8.45.30-2.el5.centos.i386.rpm --force --nodeps

</pre>

<pre>

exit

</pre>

<pre>

OSTEMPLATE="centos-4-i386-minimal"

OSTEMPLATE="centos-5-i386-minimal"

</pre>

<pre>

/vz/template/centos/4

/vz/template/centos/5

</pre>

<pre>

vzyum CTID upgrade

Note: If yum db-version complains do "rm /vz/root/VZNUM/var/lib/rpm/__*" to delete conflicting db.

<pre>

vzctl stop CTID

</pre>

<pre>

cd /vz/private/CTID

tar -xvf dev.tar

</pre>

<pre>

cd

</pre>

<pre>

vzctl start CTID

</pre>

<pre>

vzctl set --ipdel container_IP

</pre>

<pre>

vzctl stop CTID

</pre>

<pre>

cd /vz/private/CTID

tar --numeric-owner -zcf /vz/template/cache/centos-5.5-i386-minimal.tar.gz .

</pre>