多网卡或者单网卡形式下的网卡bonding

#! /bin/sh

#获取当前网卡数

ethnum=`lspci | grep Ethernet | wc -l`

echo $ethnum

#如果网卡数小于等于1则什么都不做

if [ $ethnum -le 1 ]

        then

        echo "do nothing!"

fi

#如果网卡数大于等于2则

if [ $ethnum -ge 2 ]

        then

#-------  添加一个bond0的网卡

    echo "DEVICE=bond0" > /etc/sysconfig/network-scripts/ifcfg-bond0

    echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-bond0

    echo "IPADDR=192.168.3.104" >> /etc/sysconfig/network-scripts/ifcfg-bond0

    echo "NETMASK=255.255.0.0" >> /etc/sysconfig/network-scripts/ifcfg-bond0

    echo "GATEWAY=192.168.1.1" >> /etc/sysconfig/network-scripts/ifcfg-bond0

    echo "BOOTPROTO=static" >> /etc/sysconfig/network-scripts/ifcfg-bond0

    echo "USERCTL=no" >> /etc/sysconfig/network-scripts/ifcfg-bond0

#--------

    echo "ifenslave bond0" >> /etc/rc.local

#--------写其他网卡的配置文件

    for i in $(seq $ethnum);

    do

num=`expr $i - 1`

        echo "BOOTPROTO=none" >  /etc/sysconfig/network-scripts/ifcfg-eth$num

        echo "DEVICE=eth$num" >>  /etc/sysconfig/network-scripts/ifcfg-eth$num

        echo "ONBOOT=yes" >>  /etc/sysconfig/network-scripts/ifcfg-eth$num

        echo "MASTER=bond0" >>  /etc/sysconfig/network-scripts/ifcfg-eth$num

        echo "USERCTL=no" >>  /etc/sysconfig/network-scripts/ifcfg-eth$num

        echo "SLAVE=yes" >>  /etc/sysconfig/network-scripts/ifcfg-eth$num

        sed -i 's/ifenslave.*/& eth'"$num"'/g' /etc/rc.local

    done;

echo "alias bond0 bonding" > /etc/modprobe.d/modprobe.conf

echo "options bond0 miimon=100 mode=balance-rr" >> /etc/modprobe.d/modprobe.conf

        modprobe bonding

    /etc/init.d/network   restart

fi

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