linux 配置网桥脚本

发布时间：2014-09-05 17:12:52作者：知识屋

#!/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;

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