CentosFedoraLinuxOpenVZVirtualization

How to Install OpenVZ on CentOS

CentOS is one of the most popular free and open source server operating systems. OpenVZ is a popular open source system for creating virtual private servers. Combine the two together, and you have a low-cost yet powerful VPS system. The following is a brief installation guide to get OpenVZ running on CentOS.

Add the OpenVZ repository to Yum:

cd /etc/yum.repos.d

wget http://download.openvz.org/openvz.repo

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

Edit openvz.repo and disable the [openvz-kernel-rhel5] repository (enabled=0) and enable the [openvz-kernel-rhel6] repository.

Install the OpenVZ kernel:

Search using:

yum search vzkernel

Choose the kernel you want and install:

yum install vzkernel

(This should automatically update Grub to your new kernel. If not, you may need to manually edit your grub configuration).

Install OpenVZ user tools:

yum install vzctl vzquota

Edit /etc/sysctl.conf and ensure you have these settings:

net.ipv4.ip_forward = 1

net.ipv4.conf.default.proxy_arp = 0

net.ipv4.conf.all.rp_filter = 1

kernel.sysrq = 1

net.ipv4.conf.default.send_redirects = 1

net.ipv4.conf.all.send_redirects = 0

net.ipv4.icmp_echo_ignore_broadcasts=1

net.ipv4.conf.default.forwarding=1

If your IP addresses for your virtual machines will be on a different subnet than your host machine, you need to make sure you have this in /etc/vz/vz.conf:

NEIGHBOUR_DEVS=all

Disable SELinux bye editing /etc/sysconfig/selinux:

# enforcing – SELinux security policy is enforced.

# permissive – SELinux prints warnings instead of enforcing.

# disabled – No SELinux policy is loaded.

SELINUX=disabled

Reboot

You should now have a working OpenVZ installation. You should then test it to verify that the kernel is running and that you are able to create containers.

One Comment

  1. Can you please provide me a tutorial to install OpenVZ on Ubuntu because I am working on Ubuntu to create a server.

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