Ubuntu virtualization technology OpenVZ

Install OpenVZ. Note: Ubuntu Versions later than 8.04 do not support openvz. Version 11.10 is 3.0, whereas openvz only supports version 2.6, therefore, if you want to re-compile the kernel to install openvz, the kernel cannot exceed 2.6. The following is an installation of the 10.04server version. The 10.04 kernel is another virtualization technology of Linux 2.6: Kvm, VMware, Virtualbox, Xen, and Qemu.

Install OpenVZ

Note: Ubuntu Versions later than 8.04 do not support openvz. Because the kernel version 11.10 is 3.0 and openvz only supports version 2.6, you need to re-compile the kernel to install openvz, the kernel cannot exceed 2.6. The following is an installation of version 10.04server. The 10.04 kernel is 2.6.

Other Linux Virtualization Technologies: Kvm, VMware, Virtualbox, Xen, Qemu

Installation document:

Install openvz in Ubuntu 8.04 or earlier versions:

1) Change the default ubuntu Shell from Dash to Bash.

$ Ln-sf/bin/bash/bin/sh

2) Disable AppArmor

$/Etc/init. d/apparmor stop

$ Update-rc.d-f apparmor remove

$ Apt-get remove apparmor-utils

3) install OpenVZ

$ Apt-getinstall linux-openvz vzctl vzquota

Install openvz in version 10.04 (you need to re-compile the Linux kernel with the openvz patch ):

1) install openvz

2) create a VM

A. Download the ubuntu 10.04 system template:

$ Wget http://download.openvz.org/template/precreated/ubuntu-10.04-x86.tar.gz

$ Music ubuntu-10.04-x86.tar.gz/var/lib/vz/template/cache/

B. Create a VM:

$ Vzctl create101-ostemplate ubuntu-10.04-x86

101 is the virtual machine number, and the id below 100 is used internally in openvz.

By default, virtual machines are created under/var/lib/vz/private/101 /.

The configuration file is in/etc/vz/conf/101. conf.

C. Modify the VM Configuration:

Method 1: directly modify the configuration files in the/etc/vz/conf/directory.

Method 2: Use the vzctl command to modify the modification (which can take effect in real time ).

Set the host name to test.mytest.com and the IP address to 192.168.2.100:

$ Vzctl set 101 -hostnametest.mytest.com-save

$ Vzctl set 101-ipadd192.168.2.100-save

Set the number of sockets allowed to 480

$ Vzctl set 101-numothersock‑save

Set DNS server address

$ Vzctl set 101 -- nameserver192.168.1.101 -- nameserver 8.8.8.8 -- save

D. Use a virtual machine

Enable Virtual Machine: vzctl start 101

Restart the VM: vzctl restart 101

Enter Virtual Machine: vzctl enter 101

Exit VM: exit

Stop Virtual Machine: vzctl stop 101

Delete Virtual Machine: vzctl destroy 101