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{{Warning|This document briefly article describes the steps needed to install legacy version of OpenVZ on your (RPM based) machine. For '''Debian''' based systems current version, see [[Installation on DebianQuick installation]].}}
<!--T:1-->This document is also available in briefly describes the following languages: [http://forum.openvz.org/index.php?t=tree&goto=35&#msg_35 French], [http://forum.openvz.org/index.php?t=tree&goto=1805&#msg_1805 German],[http://wiki.openvz.jp Japanese]steps needed to install '''legacy''' OpenVZ on your '''RHEL 6''' (CentOS 6,[[Quick_installation_(SpanishScientific Linux 6)|Spanish]]machine.
<!--T:3-->{{Out|A commercial version of OpenVZ consists of is available, which simplifies installation with a kernel, user-level tools, and container templatessingle disk as well as supports networked installation using PXE boot. This guide tells how to install the kernel To learn more about Virtuozzo and the toolsrequest a free trial, please see https://virtuozzo.com/openvz/}}
== Requirements ==This guide assumes you are running recent release of Fedora Core (like FC5) or RHEL/CentOS 4. Currently, OpenVZ kernel tries to support the same hardware that Red Hat kernels support. For full hardware compatibility list, see [http<!--T://www.swsoft.com/en/products/virtuozzo/hcl/ Virtuozzo HCL].5-->
=== rpm or yum? pre-setup ===<!--T:9-->
<!--T:19-->
Please make sure the following steps are performed before rebooting into OpenVZ kernel.
=== sysctl ===<!--T:20-->
<!--T:21-->
There are a number of kernel parameters that should be set for OpenVZ to work correctly. These parameters are stored in <tt>/etc/sysctl.conf</tt> file. Here are the relevant portions of the file; please edit accordingly.
<!--T:22-->
<pre>
# On Hardware Node we generally need
net.ipv4.conf.default.proxy_arp = 0
<!--T:23-->
# Enables source route verification
net.ipv4.conf.all.rp_filter = 1
<!--T:24-->
# Enables the magic-sysrq key
kernel.sysrq = 1
<!--T:25-->
# We do not want all our interfaces to send redirects
net.ipv4.conf.default.send_redirects = 1
</pre>
=== SELinux ===<!--T:26-->
<!--T:27-->SELinux should be disabled. To that effect, put the following line Put <code>SELINUX=disabled</code> to <code>/etc/sysconfig/selinux</code>:<pre>SELINUX=disabled</pre>
<!--T:28-->echo "SELINUX=== Conntracks ===disabled" > /etc/sysconfig/selinux
== Installing Download OS template caches templates ==<!--T:35-->
<!--T:36-->An OS template cache 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 matter of minutesminute.
<!--T:37-->Download precreated template caches from [http://openvz.org/download/template/cache Downloads » Templates » Precreated], or directly from [http://download.openvz.org/template/precreated/ download.openvz.org/template/precreated], or from one of the [[Download mirrors|mirrors]]. Put those tarballs '''as-is (no unpacking needed)''' to the <tt>/vz/template/cache/</tt> directory(for Debain, this is <tt>/var/lib/vz/template/cache/</tt>).
== Next steps ==<!--T:38-->
<!--T:39-->OpenVZ is now set up on your machine. To load OpenVZ kernel by default, edit the default line Follow on to [[basic operations in the /boot/grub/grub.conf file to point to the OpenVZ kernel. For example, if the OpenVZ kernel is the first kernel mentioned in the file, put it as default 0. See man grub.conf for more detailsenvironment]] document.
[[Category: Installation]]
[[Category: HOWTO]]