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This document describes the process of setting up a single server and client to run OpenVZ hosting. There are two machines: the primary and the secondary. The primary machine will only run the Django server, and the secondary machine will be running OpenVZ.

Some Variables


All these commands run as root.

First, the secondary machine needs to install the OpenVZ kernel, vzctl, and vzquota.

Install OpenVZ
apt-get install linux-openvz vzctl vzquota

Then, reboot into the new kernel to setup Apache proxy for the Virtual Environments.

Install Apache, turn on proxy, rewrite
apt-get install apache2
a2enmod proxy
a2enmod rewrite
cd /tmp
mv -f $DEFAULT_VHOST /etc/apache2/sites-available/default
echo export MAPFILE=$MAPFILE >> /etc/apache2/envvar
echo export HOSTNAME=`hostname` >> /etc/apache2/envvar
apache2ctl restart

The secondary machine needs to give access to the primary machine. So, the secondary machine needs to create a user with a constant username such as $USER above. Then, the $USER needs to have access to run vzctl as root.

Give the primary machine access
### Create user
adduser --disabled-password --gecos GECOS --ingroup nogroup $USER
# or for systems not based on Debian
# useradd -m -g nogroup $USER

### Give access to primary machine
mkdir -p /home/$USER/.ssh
chown $USER:nogroup /home/$USER/.ssh
chmod 700 /home/$USER/.ssh
cd /home/$USER/.ssh
cat > authorized_keys

### Give access to vzctl on the secondary machine
visudo /etc/sudoers
# Add the following line
# $USER ALL = NOPASSWD: /usr/sbin/vzctl

### OpenVZ configuration
vzsplit -n [MAX number of Virtual Environments] > /etc/vz/conf/ve-vps.basic.conf-sample

Now the secondary machine is configured. The next step is to insert the information on the secondary machine into the Django server running in the primary machine.

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