Linux 双网卡绑定bonding

环境：

CentOS 5系列 + Xen

1 双网卡绑定 ，产生bond0 接口

脚本如下:

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cp /etc/sysconfig/network-scripts/ifcfg-eth1 /etc/sysconfig/network-scripts/ifcfg-eth1.bak 
cat > /etc/sysconfig/network-scripts/ifcfg-eth1 <<EOF 
DEVICE=eth1 
USERCTL=no 
BOOTPROTO=none 
ONBOOT=yes 
MASTER=bond0 
SLAVE=yes 
TYPE=Ethernet
EOF
cp /etc/sysconfig/network-scripts/ifcfg-eth2 /etc/sysconfig/network-scripts/ifcfg-eth2.bak 
cat > /etc/sysconfig/network-scripts/ifcfg-eth2 <<EOF 
DEVICE=eth2 
USERCTL=no 
BOOTPROTO=none 
ONBOOT=yes 
MASTER=bond0 
SLAVE=yes 
TYPE=Ethernet
EOF
cat >/etc/sysconfig/network-scripts/ifcfg-bond0 << EOF 
DEVICE=bond0 
BOOTPROTO=none 
IPADDR=192.168.10.xx 
NETMASK=255.255.255.0 
NETWORK=192.168.10.254 
USERCTL=no 
ONBOOT=yes 
TYPE=Ethernet
EOF

2 修改xen配置文件

/etc/xen/xend-config.sxp

(network-script ‘network-bridge netdev=bond0’)

使xen使用bond0 接口,默认生成xenbr0 的接口
或者

(network-script ‘network-bridge bridge=xenbr1 netdev=bond0’)

指定桥接的接口

原来的虚拟机是使用了多网卡 桥接的脚本
/etc/xen/xend-config.sxp

(network-script multi_bridge)

/etc/xen/scripts/multi_bridge

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#!/bin/bash
dir=$(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0 netdev=eth0 bridge=xenbr0
"$dir/network-bridge" "$@" vifnum=1 netdev=eth1 bridge=xenbr1
"$dir/network-bridge" "$@" vifnum=2 netdev=eth2 bridge=xenbr2
"$dir/network-bridge" "$@" vifnum=3 netdev=eth3 bridge=xenbr3

修改使用bond0

sed -i ‘s/eth1/bond0/g’ /etc/xen/scripts/multi_bridge sed -i ‘5,6s/^/#/‘ /etc/xen/scripts/multi_bridge

3 domainU 配置文件

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name = "domain-1"
uuid = "a5b43314-cd35-74e3-a357-4290768b7599"
maxmem = 8192
memory = 8192
vcpus = 6
bootloader = "/usr/bin/pygrub"
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
vfb = [ "type=vnc,vncunused=1,keymap=en-us"  ]
disk = [ "tap:aio:/data/xenserver/domain-1/domain-1.img,xvda,w"  ]
vif = [ "mac=00:16:3e:37:02:c7,bridge=xenbr0,script=vif-bridge", "mac=00:16:36:18:22:f1,bridge=xenbr1,script=vif-bridge"  ]

4 修改内核加载参数，使之生效

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cp /etc/modprobe.conf /etc/modprobe.conf.bak 
cat >> /etc/modprobe.conf << EOF
alias bond0 bonding 
options bond0 miimon=100 mode=0
EOF

xen方式需要重启机器，才能保证双网卡绑定正常
加载绑定模块
modprobe bonding

xen 在重启完后，会生成一个pbond0 的接口

cat /proc/net/bonding/pbond0

CentOS 6系列 + KVM

ifcfg-bond0

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DEVICE=bond0
BOOTPROTO=static
BRIDGE=br0
NM_CONTROLLED=no
ONBOOT=yes

ifcfg-br0

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DEVICE=br0
TYPE=Bridge
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.11.110
NETMASK=255.255.255.0
GATEWAY=192.168.11.254
MTU=1500
SLAVE=bond0
NM_CONTROLLED=no
PEERDNS=no

vi /etc/libvirt/qemu/domain-1.xml

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<interface type='bridge'>
      <mac address='52:54:31:b3:73:31'/>
      <source bridge='br0'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>

多个bonding

修改内核模块

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cat >> /etc/modprobe.conf << EOF
alias bond0 bonding 
options bond0 miimon=100 mode=0
alias bond1 bonding 
options bond1 miimon=100 mode=0
EOF

modprobe bonding

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