linux 配置网桥脚本

linux 配置网桥脚本

#!/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;