centos下多网卡做bond脚本

多网卡或者单网卡形式下的网卡bonding

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#! /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

直接配置方法

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[root@lab101 ~]# cat /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
NAME=bond0
TYPE=Bond
BONDING_MASTER=yes
IPADDR=192.168.0.101
PREFIX=24
GATEWAY=192.168.0.1
ONBOOT=yes
BOOTPROTO=none
BONDING_OPTS="mode=1 miimon=100"
NM_CONTROLLED="no"


[root@lab101 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens33
DEVICE=ens33
NAME=bond0-slave
TYPE=Ethernet
BOOTPROTO=none
ONBOOT=yes
MASTER=bond0
SLAVE=yes
NM_CONTROLLED="no"


[root@lab101 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens37
DEVICE=ens37
NAME=bond0-slave
TYPE=Ethernet
BOOTPROTO=none
ONBOOT=yes
MASTER=bond0
SLAVE=yes
NM_CONTROLLED="no"

还原

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DEVICE=ens33
NAME=ens33
TYPE=Ethernet
BOOTPROTO=static
ONBOOT=yes
NM_CONTROLLED="no"
IPADDR=192.168.0.101
PREFIX=24
GATEWAY=192.168.0.1
ONBOOT=yes

更新历史

why when
创建 2013年08月06日
更新 2019年12月9日