Installation on Debian
This document briefly describes the steps needed to install OpenVZ on your Debian 7 "Wheezy" machine. For RHEL/Centos 6 based systems, please see Quick installation.
This guide assumes you are running Debian 7 "Wheezy" for AMD64 or i686.
 /vz file system
It is recommended to use a separate partition for containers (by default /var/lib/vz) and format it to ext4.
 apt pre-setup
|Note: For more info about Debian repositories, see http://download.openvz.org/debian.|
Run the following:
cat << EOF > /etc/apt/sources.list.d/openvz-rhel6.list deb http://download.openvz.org/debian wheezy main # deb http://download.openvz.org/debian wheezy-test main EOF
|Note: The second line with wheezy-test is commented out. This is a testing repo with newer kernels and possibly tools. Enable it if you want to stay on a bleeding edge of technology.|
Import GPG key used for signing repository:
wget http://ftp.openvz.org/debian/archive.key apt-key add archive.key
Update the local cache:
 Kernel installation
Limited OpenVZ functionality is supported when you run a recent 3.x kernel (check vzctl for upstream kernel), so OpenVZ kernel installation is optional but still highly recommended.
# apt-get install linux-image-openvz-amd64
Or, if you still have i686:
# apt-get install linux-image-openvz-686
 System configuration
Please make sure the following steps are performed before rebooting into OpenVZ kernel.
There are a number of kernel parameters that should be set for OpenVZ to work correctly. These parameters are stored in /etc/sysctl.conf file. Here are the relevant portions of the file; please edit accordingly.
# On Hardware Node we generally need # packet forwarding enabled and proxy arp disabled net.ipv4.ip_forward = 1 net.ipv6.conf.default.forwarding = 1 net.ipv6.conf.all.forwarding = 1 net.ipv4.conf.default.proxy_arp = 0 # Enables source route verification net.ipv4.conf.all.rp_filter = 1 # Enables the magic-sysrq key kernel.sysrq = 1 # We do not want all our interfaces to send redirects net.ipv4.conf.default.send_redirects = 1 net.ipv4.conf.all.send_redirects = 0
 Tools installation
OpenVZ needs some user-level tools installed:
# apt-get install vzctl vzquota ploop vzstats
 Reboot into OpenVZ kernel
Now reboot the machine and choose an entry with word "openvz" in the boot loader menu (it should be default choice).
 Download OS templates
|Note: this step is optional, vzctl is able to download templates on demand.|
An OS template is a Linux distribution installed into a container and then packed into a gzipped tarball. Using such a cache, a new container can be created in a minute.
Download precreated template caches from Downloads » Templates » Precreated, or directly from download.openvz.org/template/precreated, or from one of the mirrors. Put those tarballs as-is (no unpacking needed) to the /vz/template/cache/ directory.
 Next steps
OpenVZ is now set up on your machine. Follow on to basic operations in OpenVZ environment document.