asked on

ubuntu kvm bridge

ok settup up ubuntu 12.04 kvm and following this

http://techtips-tom.blogspot.co.uk/2012/05/ubuntu-1204-kvm-server.html

get to Use the following to show bridges
brctl show
shows virbr0, but this is not the bridge I need to be connected to eth0
setup proper bridged network as follows:
sudo nano /etc/network/interfaces
change the following lines
auto eth0
iface eth0 inet dhcp
to
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet dhcp
bridge_ports eth0
bridge_fd 0
bridge_stp off
bridge_maxwait 0

I try and save and I get misplaced option

after reboot I can no longer ssh to the server or ping it

Chris Sandrini

Did you assign any ipadress either to the bridge or the interface?

This is my config:

auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
        address 192.168.2.100
        network 192.168.2.0
        netmask 255.255.255.0
        broadcast 192.168.2.255
        gateway 192.168.2.1
        bridge_ports eth0
        bridge_stp off
        bridge_fd 0
        bridge_maxwait 0

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IanTh

ASKER

I had an ip address first no communication took it out as the guide I was following said nothing

how does bridging work in Linux I have binned ubuntu there was no web client I found proxmox ve which is a linux iso for virtual machines using KVM or openvz which is based on debian and that needs a network bridge setting up I just dont understand the way a network bridge works in Linux

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Chris Sandrini

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IanTh

ASKER

yes I did have bridge I just couldn't ssh to the machine

I know as a bridge a a physical device to connect disparate networks st fiber and ethernet for instance although a bridge and a switch can be the same thing these days

Chris Sandrini

Can you ssh now then?

IanTh

ASKER

I have rebuilt it now using proxmox it still mentions a bridge as its a type 1 hypervisor based on debian v6 as I was looking for a web client for the ubuntu nodes and I stumbled on proxmox I had a cluster up and running well 85% of the cluster as it was inside esxi free within say 2 hours