LVS-DR-listen

#!/bin/bash
VIP=192.168.100.2
count=1
RIP=/home/"RIP"


echo 1 > /proc/sys/net/ipv4/ip_forward
echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
cat /etc/sysctl.conf | sort |uniq > /etc/sysctl.conf  #先輸入 然後去重複 再寫入/sysctl.conf


`ip addr del $VIP/32 dev eno16777736:0`
`ip addr add $VIP/32 dev eno16777736:0`
`rm -rf /etc/sysconfig/network-scripts/ifcfg-eno16777736:0`
touch /etc/sysconfig/network-scripts/ifcfg-eno16777736:0
echo 'DEVICE=eno16777736:0
IPADDR='$VIP'
NETMASK=255.255.255.255
ONBOOT=yes
NAME=eno16777736:0' > /etc/sysconfig/network-scripts/ifcfg-eno16777736:0


`ipvsadm -D -t $VIP:http` > /dev/null 2>&1
`ipvsadm -A -t $VIP:http -s rr` > /dev/null 2>&1


function STARTA {
  for R in `cat $RIP`
    do
      curl --connect-timeout 1 $R > /dev/null 2>&1 #監聽服務器是否運行
      count=`echo $?`
      if [ $count -eq 0 ]
      then
         ipvsadm -a -t $VIP:http -r $R:http -g  > /dev/null 2>&1 #服務器在線
      else
         ipvsadm -d -t $VIP:http -r $R:http > /dev/null 2>&1     #服務器下線
      fi


  done
sleep 3
STARTA
}
STARTA