Installation Ubuntu Server
Why install on Virtual server
- You can use your existing hardware in an efficient way.
- Maintenance and disaster recovery become easy.
- For even a single service like a web server, email server etc. you can assign a Linux virtual machine and thus keep things simple.
- You can run multiple guests on a single machine.
Ubuntu server on VMware on any host
- Download the server image from http:// www.ubuntu.com/getubuntu/downloadserver
- Start Vmware
- Create a new virtual machine using the image you just downloaded
Here is an overview of a sample partioning on hard drive.
|Directory||Type||File System||Typical Size||Size LAB|
Option 2: Linux guests to an Ubuntu host running KVM
- KVM is the default virtualisation technology that ships with current versions of Ubuntu
- Requires hardware with virtualisation extensions
One host, many guests
- Ubuntu guest
- Windows guest
Install a guest
Can your hardware support KVM?
inspect the cpuinfo virtual file:
egrep '(vmx|svm)' --color=always /proc/cpuinfo
No output means no KVM support. Try checking virtualization settings in the BIOS.
If there is support, install the required packages:
$ sudo apt-get install kvm libvirt-bin ubuntu-vmbuilder qemu bridge-utils virt-viewer
- libvirt-bin provides libvirtd which you need to administer qemu and kvm instances using libvirt
- kvm is the backend
- ubuntu-vm-builder powerful command line tool for building virtual machines
- bridge-utils provides a bridge from your network to the virtual machines
Add your user name to the libvirtd group
More about user management later.
$ sudo usermod -aG libvirtd `id -un`
This will give you access to the system-wide libvirtd instance. Log out and in to make this effective.
Test the installation is valid:
virsh is the main interface for managing guest domains
$ virsh -c qemu:///system list Id Name State $
Run the KVM command as root to reveal problems, such as lack of hardware
kvm command can be used to start guest machines directly
$ sudo kvm QEMU PC emulator version 0.9.1 (kvm-62), Copyright (c) 2003-2008 Fabrice Bellard usage: qemu [options] [disk_image] ... $
Setup virtual network
You need to configure bridge networking to enable network services to the VM and VM access to the outside world. The VM will access the network through the host’s physical network interface.
Install the bridge utility with the following command
sudo apt-get install bridge-utils
Stop networking services
sudo invoke-rc.d networking stop
Setup the virtual network step 2
Edit /etc/network/ interfaces and add the br0 section:
auto lo iface lo inet loopback auto eth0 iface eth0 inet manual auto br0 iface br0 inet static address 192.168.0.10 network 192.168.0.0 netmask 255.255.255.0 broadcast 192.168.0.255 gateway 192.168.0.1 bridge_ports eth0 bridge_stp off bridge_fd 0 bridge_maxwait 0
You may also use DHCP instead of fixed IP address.
Setup the virtual network step 3
Restart networking services:
sudo /etc/init.d/networking restart
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