libvirt 網路配置 bridge

bridge方式配置libvirt網路

1、network.xml

local

其中192.168.0.204是host的ip，閘道器為192.168.0.254 

root@204:/opt# virsh net-define network.xml

root@204:/opt# virsh net-autostart local
root@204:/opt#  virsh net-start local

如果報錯：

error: failed to create network from network.xml

error: internal error network is already in use by inte***ce eth0

先 ifconfig eth0 down

2、修改 /etc/network/inte***ce，只保留 lo

auto lo

iface lo inet loopback 
dns-nameservers 192.168.0.254

3、開機自動啟動指令碼：

#!/bin/sh

sleep 3
ifconfig eth0 up
brctl add local eth0
route del default
route add default gw 192.168.0.254 metric 0 dev local

4、重啟機器  reboot，即可看到：

root@204:~# virsh net-list --all

name                 state      autostart
-----------------------------------------
default              active     yes
local                active     yes

eth0      link encap:ethernet  hwaddr 00:1e:68:04:74:68

inet6 addr: fe80::21e:68ff:fe04:7468/64 scope:link
up broadcast running multicast  mtu:1500  metric:1
rx packets:3085 errors:0 dropped:0 overruns:0 frame:0
tx packets:248 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
rx bytes:491876 (491.8 kb)  tx bytes:43962 (43.9 kb)
interrupt:18 memory:fd9e0000-fda00000
lo        link encap:local loopback
inet addr:127.0.0.1  mask:255.0.0.0
inet6 addr: ::1/128 scope:host
up loopback running  mtu:16436  metric:1
rx packets:167 errors:0 dropped:0 overruns:0 frame:0
tx packets:167 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
rx bytes:8376 (8.3 kb)  tx bytes:8376 (8.3 kb)
local     link encap:ethernet  hwaddr 00:1e:68:04:74:68
inet addr:192.168.0.204  bcast:192.168.0.255  mask:255.255.255.0
up broadcast running multicast  mtu:1500  metric:1
rx packets:1308 errors:0 dropped:0 overruns:0 frame:0
tx packets:238 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
rx bytes:132498 (132.4 kb)  tx bytes:41842 (41.8 kb)
virbr0    link encap:ethernet  hwaddr ea:44:0a:49:d4:50
inet addr:192.168.122.1  bcast:192.168.122.255  mask:255.255.255.0
up broadcast multicast  mtu:1500  metric:1
rx packets:0 errors:0 dropped:0 overruns:0 frame:0
tx packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
rx bytes:0 (0.0 b)  tx bytes:0 (0.0 b)

root@204:/opt# route

kernel ip routing table
destination     gateway         genmask         flags metric ref    use iface
default         192.168.0.254   0.0.0.0         ug    0      0        0 local
192.168.0.0     *               255.255.255.0   u     0      0        0 local
192.168.122.0   *               255.255.255.0   u     0      0        0 virbr0
root@204:/opt#

虛擬機器就可以使用和主機在同乙個網段的ip了，在domain的配置檔案中inte***ce的配置段：

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