在 CentOS 6 上為 Xen 設置橋接網絡
警告:在更改網絡前,請確保你不用依靠網絡亦能存取目標系統,供出錯時用。
尋找你的主網絡裝置:
ip route show | grep 'default' | awk '{print $5}'
一般來說這是 eth0。本指引接下來假設你想建立一個名叫 xenbr0 的橋接器,並將 eth0 設成它的從屬裝置。
請進到 /etc/sysconfig/network-scripts 目錄,然後參考 ifcfg-eth0 建立一個名叫 ifcfg-xenbr0 的檔案:
cat ifcfg-eth0 | sed "s/TYPE=.*$/TYPE=Bridge/" | sed "s/DEVICE=.*$/DEVICE=xenbr0/" | sed "s/NAME=.*$/NAME=xenbr0/" | sed "/UUID=/d" > ifcfg-xenbr0 echo " DELAY=0" >> ifcfg-xenbr0
所建成的檔案大概會如下:
TYPE=Bridge DEVICE=xenbr0 ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=dhcp DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME=xenbr0 DELAY=0
現在把 eth0 設成 xenbr0 的從屬裝置:
sed -i --follow-symlinks "s/BOOTPROTO=.*$/BOOTPROTO=none/;" ifcfg-eth0 echo " BRIDGE=xenbr0" >> ifcfg-eth0
最後,重新啟動網絡:
service network restart
請執行 ifconfig -a 來確定你的橋接器已被正確地設置:
eth0 Link encap:Ethernet HWaddr 30:5B:D6:F1:D6:F8 inet6 addr: fe80::325b:d6ff:fef1:d6f8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8881 errors:0 dropped:0 overruns:0 frame:0 TX packets:769 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:700735 (684.3 KiB) TX bytes:1470733 (1.4 MiB) Interrupt:40 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:65536 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) xenbr0 Link encap:Ethernet HWaddr 30:5B:D6:F1:D6:F8 inet addr:10.80.236.237 Bcast:10.80.239.255 Mask:255.255.240.0 inet6 addr: fe80::325b:d6ff:fef1:d6f8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8104 errors:0 dropped:0 overruns:0 frame:0 TX packets:535 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:630852 (616.0 KiB) TX bytes:1442490 (1.3 MiB)
Translation of revision 4