Bruce Dubbs wrote:
> Nathan Coulson wrote:
>
>> Not any time to proofread this, but this is what I use
>>
>> echo > /etc/qemu-ifup << "EOF"
>> ip addr add 0.0.0.0 dev $1
>> ip link set $1 up
>> brctl addif br0 $1
>> EOF
>
> Well I finally had an epiphany. The script goes on the host, not the
> client! Sometimes you just get going in the wrong direction ... and
> going .. and going.
OK, thanks to Nathan, Qrux, a lot of reading, and a lot of
experimenting, I've got this working. My notes are below. I will be
adding bridge-utils and qemu-kvm to the book and show users how to set
it up. I won't use exactly the instructions below, but I'll use them
as a guide.
I'll add the bridge service that Nathan wrote to the bootscripts.
The capability this adds is the ability to use kvm/qemu to build LFS in
a controlled environment. One problem with kvm is that you can't,
AFAIK, cut and paste between the host and client window. Now a ssh
session from the host (or another system on the network) allows a nice
interface for building the book. LFS build LFS in a nice convenient way.
-- Bruce
Set VT option in BIOS.
Need bridge-utils-1.5.tar.gz
qemu-kvm-1.0.tar.gz
groupadd -g 61 kvm
usermod -g kvm userid
KERNEL
CONFIG_BRIDGE=y
CONFIG_STP=y
CONFIG_TUN=y
CONFIG_HAVE_KVM=y
CONFIG_KVM=y
CONFIG_KVM_INTEL=y
# Installed in /opt/kvm
# Do some convenience things
cd /opt/kvm/bin
sudo chmod 4755 qemu-system-x86_64
ln -s qemu-system-x86_64 qemu
sudo chgrp kvm *
export PATH=/opt/kvm/bin:$PATH
sysctl -w net.ipv4.ip_forward=1
# Set host interface to go through br0 instead of eth0
brctl addbr br0
brctl addif eth0
brctl stp br0 off
ip link set br0 up
ip link set eth0 up
ip addr add $HOSTIP dev br0
ip route add default via $GATEWAY dev br0
# Create /etc/qemu-ifup
#!/bin/bash
switch=br0
if [ -n "$1" ]; then
# Add new tap0 interface to bridge
/usr/bin/sudo /sbin/ip link set $1 up
sleep 0.5s
/usr/bin/sudo /usr/sbin/brctl addif $switch $1
else
echo "Error: no interface specified"
exit 1
fi
exit 0
# Create /etc/qemu-ifdown
#!/bin/bash
switch=br0
if [ -n "$1" ];then
# Remove tap0 interface from bridge
/usr/bin/sudo /usr/sbin/brctl delif $switch $1
else
echo "Error: no interface specified"
exit 1
fi
exit 0
# Start qemu
qemu -hda fedora.img -m 1G -net nic -net tap
On client:
DHCP works by default on Fedora
Set up as a static IP on client
Start ssh (service ssh start, or set to come up automatically)
Turn off firewall (service iptables stop) on client for incoming ssh and
other services
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