Qemu sanal köprülü ağ kurma

qemu-virtual-bridge.md

Aşağıda yer alan komutlar sanal bir qemu köprülü ağı kurmak içindir. Ana bilgisayar koşuğlara sanal ip aralığı üzerinden erişebilir.

gerekli uygulamalar

qemu, vde2, dnsmasq

qemu-vde.sh vde tap ağı kurmak için gerekli betik

#!/bin/sh
# QEMU/VDE network environment preparation script

# The IP configuration for the tap device that will be used for
# the virtual machine network:

TAP_DEV=tap0
TAP_IP=192.168.100.1
TAP_MASK=24
TAP_NETWORK=192.168.100.0

# Host interface
NIC=wlp2s0

case "$1" in
  start)
	echo -n "Starting VDE network for QEMU: "

	# If you want tun kernel module to be loaded by script uncomment here
	#modprobe tun 2>/dev/null
	## Wait for the module to be loaded
	#while ! lsmod | grep -q "^tun"; do echo "Waiting for tun device"; sleep 1; done

	# Start tap switch
	vde_switch -tap "$TAP_DEV" -daemon -mod 660 -group users

	# Bring tap interface up
	ip address add "$TAP_IP"/"$TAP_MASK" dev "$TAP_DEV"
	ip link set "$TAP_DEV" up

	# Start IP Forwarding
	echo "1" > /proc/sys/net/ipv4/ip_forward
	iptables -t nat -A POSTROUTING -s "$TAP_NETWORK"/"$TAP_MASK" -o "$NIC" -j MASQUERADE
	;;
  stop)
	echo -n "Stopping VDE network for QEMU: "
	# Delete the NAT rules
	iptables -t nat -D POSTROUTING -s "$TAP_NETWORK"/"$TAP_MASK" -o "$NIC" -j MASQUERADE

	# Bring tap interface down
	ip link set "$TAP_DEV" down

	# Kill VDE switch
	pgrep vde_switch | xargs kill -TERM
	;;
  restart|reload)
	$0 stop
	sleep 1
	$0 start
	;;
  *)
	echo "Usage: $0 {start|stop|restart|reload}"
	exit 1
esac
exit 0

qemu-vde ağı başlatılır.

qemu-vde.sh start

dnsmasq.conf

interface=tap0
port=5353
listen-address=127.0.0.1
dhcp-range=192.168.100.100,192.168.100.150,12h
# server=8.8.8.8

mevcut vde ağına birimleri bağlar ve dns/dhcp servisi sağlar.

# bu komut iptal - non-root durum için ama gerekli işlevi sağlamadı.
# slirpvde -d -n 192.168.100.0 -dhcp
# -d debug mode, non-daemon
sudo dnsmasq -C dnsmasq.conf -d

sanal makinelerin bağlanması

# node1 - 192.168.100.135
qemu-system-riscv64 -machine virt \
-netdev vde,id=n1 -device virtio-net-device,netdev=n1,mac=fc:ac:14:e8:8f:32 -net vde \
-cpu rv64 -m 48 -smp 1 -bios none \
-kernel build-qemu-virt-riscv64-test-my/lk.elf
# node2 - 192.168.100.136
qemu-system-riscv64 -machine virt \
-netdev vde,id=n1 -device virtio-net-device,netdev=n1,mac=fc:ac:14:e8:8f:33 -net vde \
-cpu rv64 -m 48 -smp 1 -bios none \
-kernel build-qemu-virt-riscv64-test-my/lk.elf

referanslar

• https://wiki.archlinux.org/title/QEMU#Networking_with_VDE2
• https://tinkergeek.com/2019/02/11/Virtual-Lab-Qemu-VDE/
• https://wiki.qemu.org/Documentation/Networking#Socket