Difference between revisions of "Quick installation (legacy)"

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<languages />
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<translate>
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This document briefly describes the steps needed to install OpenVZ on your '''RHEL 6''' (CentOS 6, Scientific Linux 6) machine.
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<!--T:2-->
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For '''Debian''' based systems, please see [[Installation on Debian]].
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<!--T:3-->
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{{Out|A commercial version of OpenVZ is available, which simplifies installation with a single disk as well as supports networked installation using PXE boot. To learn more about Virtuozzo and request a free trial, please see http://www.odin.com/products/virtuozzo/}}
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<!--T:4-->
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{{Out|If you want to try a new development version of [[Virtuozzo]] 7, check [[Quick installation of Virtuozzo 7]].}}
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== Requirements == <!--T:5-->
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<!--T:6-->
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This guide assumes you are running '''RHEL (CentOS, Scientific Linux) 6''' on your system. Currently, this is a recommended platform to run OpenVZ on.
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=== /vz file system === <!--T:7-->
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<!--T:8-->
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It is recommended to use a separate partition for containers (by default '''/vz''') and format it to '''ext4'''.
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=== yum pre-setup === <!--T:9-->
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<!--T:10-->
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Download [http://ftp.openvz.org/openvz.repo openvz.repo] file and put it to your <code>/etc/yum.repos.d/</code> repository:
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<pre><nowiki>wget -P /etc/yum.repos.d/ http://ftp.openvz.org/openvz.repo</nowiki></pre>
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Import OpenVZ GPG key used for signing RPM packages:
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<pre><nowiki>rpm --import http://ftp.openvz.org/RPM-GPG-Key-OpenVZ</nowiki></pre>
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== Kernel installation == <!--T:14-->
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<!--T:15-->
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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 recommended.
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# yum install vzkernel
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== System configuration == <!--T:17-->
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<!--T:18-->
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{{Note|With vzctl 4.4 or newer there is no need to do manual configuration. Skip to [[#Tools_installation]].}}
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<!--T:19-->
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Please make sure the following steps are performed before rebooting into OpenVZ kernel.
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=== sysctl === <!--T:20-->
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<!--T:21-->
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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.
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<pre>
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# On Hardware Node we generally need
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# packet forwarding enabled and proxy arp disabled
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net.ipv4.ip_forward = 1
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net.ipv6.conf.default.forwarding = 1
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net.ipv6.conf.all.forwarding = 1
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net.ipv4.conf.default.proxy_arp = 0
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# Enables source route verification
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net.ipv4.conf.all.rp_filter = 1
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<!--T:24-->
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# Enables the magic-sysrq key
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kernel.sysrq = 1
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# We do not want all our interfaces to send redirects
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net.ipv4.conf.default.send_redirects = 1
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net.ipv4.conf.all.send_redirects = 0
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</pre>
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=== SELinux === <!--T:26-->
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SELinux should be disabled. Put <code>SELINUX=disabled</code> to <code>/etc/sysconfig/selinux</code>:
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echo "SELINUX=disabled" > /etc/sysconfig/selinux
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== Tools installation == <!--T:29-->
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<!--T:30-->
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{{Out|Before installing tools, please read about [[vzstats]] and opt-out if you don't want to help the project.}}
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<!--T:31-->
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OpenVZ needs some user-level tools installed:
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<!--T:32-->
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# yum install vzctl vzquota ploop
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== Reboot into OpenVZ == <!--T:33-->
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Now reboot the machine and choose "OpenVZ" on the boot loader menu (it should be default choice).
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== Download OS templates == <!--T:35-->
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<!--T:36-->
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An OS template is a Linux distribution installed into a container
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and then packed into a gzipped tarball. Using such a cache, a new container
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can be created in a minute.
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<!--T:37-->
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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.
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== Next steps == <!--T:38-->
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OpenVZ is now set up on your machine. Follow on to [[basic operations in OpenVZ environment]] document.
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</translate>
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[[Category: Installation]]
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[[Category: HOWTO]]

Revision as of 15:57, 11 January 2016

<languages /> <translate>

This document briefly describes the steps needed to install OpenVZ on your RHEL 6 (CentOS 6, Scientific Linux 6) machine.

For Debian based systems, please see Installation on Debian.

A commercial version of OpenVZ is available, which simplifies installation with a single disk as well as supports networked installation using PXE boot. To learn more about Virtuozzo and request a free trial, please see http://www.odin.com/products/virtuozzo/
If you want to try a new development version of Virtuozzo 7, check Quick installation of Virtuozzo 7.

Requirements

This guide assumes you are running RHEL (CentOS, Scientific Linux) 6 on your system. Currently, this is a recommended platform to run OpenVZ on.

/vz file system

It is recommended to use a separate partition for containers (by default /vz) and format it to ext4.

yum pre-setup

Download openvz.repo file and put it to your /etc/yum.repos.d/ repository: 

wget -P /etc/yum.repos.d/ http://ftp.openvz.org/openvz.repo

Import OpenVZ GPG key used for signing RPM packages: 

rpm --import http://ftp.openvz.org/RPM-GPG-Key-OpenVZ

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 recommended.

  1. yum install vzkernel

System configuration

Yellowpin.svg Note: With vzctl 4.4 or newer there is no need to do manual configuration. Skip to #Tools_installation.

Please make sure the following steps are performed before rebooting into OpenVZ kernel.

sysctl

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

<!--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
net.ipv4.conf.all.send_redirects = 0

SELinux

SELinux should be disabled. Put SELINUX=disabled to /etc/sysconfig/selinux:

echo "SELINUX=disabled" > /etc/sysconfig/selinux

Tools installation

Before installing tools, please read about vzstats and opt-out if you don't want to help the project.

OpenVZ needs some user-level tools installed:

  1. yum install vzctl vzquota ploop

Reboot into OpenVZ

Now reboot the machine and choose "OpenVZ" on the boot loader menu (it should be default choice).

Download OS templates

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.

</translate>

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