lvs dr tunl 真實機腳本

 

#!/bin/bash
#create lvs dr or tunl realservr scripts.
#chenjian 2011-09-23

VIP_LIST="192.168.116.20 192.168.116.21"
USAGE="Usage: $0 {start|stop|status} {dr|tunl}"
NAME=tunl
NUM=0


if [ -z $1 ]
then
    echo $USAGE
    exit 2
fi

ACTION=`echo $1|tr A-Z a-z`

if ! [ $1 == status ]
then
    if [ -z $2 ]
    then
        echo $USAGE
        exit 2
    fi
fi

TYPE=`echo $2|tr A-Z a-z`

case "$1" in
start)

if [ $TYPE == dr ]
then
    if /sbin/ifconfig |grep lo: > /dev/null
    then
        /sbin/ifdown lo
        /sbin/ifup lo
    fi
    for vip in `echo $VIP_LIST`;do
        /sbin/ifconfig lo:$NUM  $vip netmask 255.255.255.255 broadcast $vip
        /sbin/route add -host $vip dev lo:$NUM
        NUM=`echo $[$NUM+1]`
    done

    echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
    echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
    echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
    echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
    sysctl -p >/dev/null 2>&1
    echo "$TYPE RealServer Start [ OK ]"
elif  [ $TYPE == tunl ]
then
    for vip in `echo $VIP_LIST`;do
        if [ $NAME == tunl ]
        then
            NAME=tunl0
            /sbin/ifconfig "$NAME" $vip netmask 255.255.255.255
            /sbin/route add -host $vip dev $NAME
        else
            /sbin/ifconfig "$NAME":"$NUM" $vip netmask 255.255.255.255
            /sbin/route add -host $vip dev $NAME
        fi
        NUM=`echo $[$NUM+1]`
    done
    echo 1 > /proc/sys/net/ipv4/conf/tunl0/arp_ignore
    echo 2 > /proc/sys/net/ipv4/conf/tunl0/arp_announce
    echo 0 > /proc/sys/net/ipv4/conf/tunl0/arp_filter
    echo 1 > /proc/sys/net/ipv4/conf/tunl0/forwarding
    echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
    echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

    sysctl -p >/dev/null 2>&1
    echo "$TYPE RealServer Start [ OK ]"
else
    echo $USAGE
    exit 2
fi
;;
stop)
if [ $TYPE == dr ]
then
    /sbin/ifconfig lo down
    /sbin/ifconfig lo up

    echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
    echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
    echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
    echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce

    sysctl -p >/dev/null 2>&1
    echo "$TYPE RealServer Stop [ OK ]"
elif  [ $TYPE == tunl ]
then
        /sbin/ifconfig tunl0 down

        echo 0 > /proc/sys/net/ipv4/conf/tunl0/arp_ignore
        echo 0 > /proc/sys/net/ipv4/conf/tunl0/arp_announce
        echo 1 > /proc/sys/net/ipv4/conf/tunl0/arp_filter
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce

else
    echo $USAGE
    exit 2
fi
;;
status)
if /sbin/ifconfig |grep -q 'lo:'
then
    TYPE=dr
elif /sbin/ifconfig |grep -q 'tunl'
then
    TYPE=tunl
else
    exit 2
fi

for vip in `echo $VIP_LIST`;do

    if [ ! `/sbin/ifconfig |grep -q $vip` -o ! `netstat -rn |grep $vip` ];
    then
        echo "LVS-$TYPE real server stopped,vip = $vip"
    else
        echo "LVS-$TYPE Running，vip = $vip"
    fi
done

;;
*)
echo "$USAGE"
exit 1
;;
esac