Linux 配置網橋腳本

#!/bin/sh 
 
############################################################## 
# 
# function: create linux bridge, CentOS 5 test pass.  
# user: chenjian 
# date : 2011-06-30 ^_^. 
# 
############################################################## 
 
NETWORK_DIR=/etc/sysconfig/network-scripts 
 
if ! `rpm -qi bridge-utils > /dev/null`; 
        then 
                echo "bridge-utils package not install." 
fi 
 
rm -rf $NETWORK_DIR/ifcfg-br* 
read -p "Input your bridge name,ex br0: " 
 
if [ `echo $REPLY|wc -L` -eq 0 ]; 
         then 
         REPLY=br0 
fi 
 
BRIDGE=$REPLY 
ETHERNET_ALL=$( ls -l $NETWORK_DIR|awk -F'-' '/ifcfg-eth/{print $8}') 
 
while  [ `echo $REPLY|wc -w` -lt 2 ]; 
        do 
                read -p "Input you need to use the network adapter, separated by a space. current cards(`echo $ETHERNET_ALL`),chose two : " 
 
done 
 
ETHERNET=$REPLY 
 
for i in `seq 1 3`; 
        do 
                read -p "Input the bridge ip address and netmask. separated by a space: " 
        if [ `echo $REPLY|wc -L` -eq 0 ]; 
        then  
                echo "Input empty. this bridage will no ip address. " 
                REPLY="0.0.0.0 0.0.0.0" 
                sleep 3 
                break 
        elif `echo $REPLY|grep -v '[0-9]\.'  > /dev/null`; 
        then 
                echo "Use only numbers and points." 
        elif [ `echo $REPLY|awk '{print $2}'|wc -L` -eq 0 ] 
        then  
                echo "Input errors, exit." 
                exit 2 
        else 
                break 
        fi 
done 
 
IP=`echo $REPLY|awk '{print $1}'` 
NETMASK=`echo $REPLY|awk '{print $2}'` 
 
 
brctl addbr $BRIDGE 
 
cat > $NETWORK_DIR/ifcfg-$BRIDGE <<-EOF 
DEVICE=$BRIDGE 
BOOTPROTO=static 
ONBOOT=yes 
NETMASK=$NETMASK 
IPADDR=$IP 
TYPE=Bridge 
EOF 
 
echo ------------------------------------- 
echo "Bridge info " 
echo ------------------------------------- 
 
cat $NETWORK_DIR/ifcfg-$BRIDGE 
echo ""  
for i in `echo $ETHERNET`; 
        do  
 
MAC=$(ifconfig $i|awk '/HWaddr/{print $NF }') 
cat > $NETWORK_DIR/ifcfg-$i <<EOF 
DEVICE=$i 
HWADDR=$MAC 
BOOTPROTO=none 
ONBOOT=yes 
HOTPLUG=no 
TYPE=Ethernet 
BRIDGE=$BRIDGE 
EOF 
 
echo ------------------------------------- 
echo "$i info" 
echo ------------------------------------- 
cat $NETWORK_DIR/ifcfg-$i   
echo "" 
 
done 
echo "" 
 
echo ------------------------------------- 
echo -e "install successful ,you need to restart your network" 
echo ------------------------------------- 
 
exit 0;