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bound.sh
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#!/bin/bash
# -------------------------------------------------------------------------------
# Script_name : bound.sh
# Revision : 1.0
# Date : 2018-10-17 17:19:39
# Author : Linkding
# Email : 619216759@qq.com
# Description : 用于做网卡捆绑，实现网卡高可用
# -------------------------------------------------------------------------------
day=$(date +%Y%m%d)
file=/etc/modprobe.d/bonding
NUM=6 #使用mode模式6 负载均衡
[[ -e /proc/net/bonding ]] && echo "当前网卡已绑定,程序退出" && exit
###该脚本目前默认捆绑 em1,em3 ,捆绑模式为mode 6,默认从em1 获取当前网卡配置，网关默认为172.16.1.254
echo "生成网卡驱动配置文件"
cat > /tmp/bonding <<EOF
alias br0 bonding
options bonding mode=6 miimon=200
EOF
### 保存当前路由表
ip route > /tmp/route_$day
### 关闭Netmanger 和取消开机启动
[[ -e /etc/init.d/NetworkManager ]] && /etc/init.d/NetworkManager stop && chkconfig --level 35 NetworkManager off
cp /tmp/bonding $file
## 获取当前网卡ip和网关
ip=$(cat /etc/sysconfig/network-scripts/ifcfg-em1 | grep IPADDR | awk -F= '{print $2}')
### 修改网卡配置文件
/bin/cp /etc/sysconfig/network-scripts/ifcfg-em1 /tmp/ifcfg-em1_$day
[[ -e /etc/sysconfig/network-scripts/ifcfg-em3 ]] && /bin/cp /etc/sysconfig/network-scripts/ifcfg-em3 /tmp/ifcfg-em3_$day
echo "修改对应网卡配置"
#sed 's/em./br0/' /etc/sysconfig/network-scripts/ifcfg-em1 > /etc/sysconfig/network-scripts/ifcfg-br0
cat > /etc/sysconfig/network-scripts/ifcfg-br0 <<EOF
DEVICE=br0
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=$ip
NETMASK=255.255.255.0
GATEWAY=172.16.1.254
EOF
cat > /etc/sysconfig/network-scripts/ifcfg-em1 <<EOF
DEVICE=em1
BOOTPROTO=none
MASTER=br0
SLAVE=yes
EOF
cat > /etc/sysconfig/network-scripts/ifcfg-em3 << EOF
DEVICE=em3
BOOTPROTO=none
MASTER=br0
SLAVE=yes
EOF
#modprobe -r bonding
#sed -i "s/mode=./mode=$NUM/" $file
echo "加载模块"
modprobe bonding
echo "重启网络"
/etc/init.d/network restart
echo "恢复路由"
cat /tmp/route_$day |grep via | grep -v default | awk -F "/|via|dev" '{print "route add -net " $1 " netmask 255.255.255.0 gw" $3}'| bash
cat /tmp/route_$day |grep via | grep default | awk -F "/|via|dev" '{print "route add default gw "$2}'| bash
echo "检查配置状态"
cat /proc/net/bonding/br0 | grep "Bonding Mode"