lvs DR模式，一键部署脚本：
    在这个脚本VIP和RIP等都是可以自定义的。并且脚本可以根据主机名自动的判断是配置vip和rip，即实现一个脚本到处执行。

    1. #!/bin/bash
    2. #by zyz
    3. #############################
    5. # 获取主机名
    6. HOSTNAME=`hostname`
    7. # 设置VIP和RIP的主机名变量
    8. VIP_HOSTNAME="LVS-72-200"
    9. RIP_HOSTNAME_1="RIP-72-127"
    10. RIP_HOSTNAME_2="RIP-72-128"
    13. VIP=192.168.72.200
    14. RIP1=192.168.72.127
    15. RIP2=192.168.72.128
    16. PORT=80
    17. # VIP服务器的VIP子网卡
    18. VIP_INTERFACE=ens32:1
    19. # 后端服务器的lo子网卡
    20. LO_INTERFACE=lo:1
    21. # VIP和RIP出去的网关，该网关为路由器的内网地址
    22. GATEWAY=192.168.72.130
    24. # 配置LVS：
    25. if [ "$HOSTNAME" = "$VIP_HOSTNAME" ];then
    26.     case "$1" in
    27.         start)
    28.             ping  -c2 $VIP &>/dev/null
    29.             if [ $? -ne 0 ];then
    30.                 cd /etc/sysconfig/network-scripts/ 
    31.                 cat > ifcfg-$VIP_INTERFACE <<-EOF
    32.                 TYPE="Ethernet"
    33.                 BOOTPROTO="none"
    34.                 DEVICE="${VIP_INTERFACE}"
    35.                 ONBOOT="yes"
    36.                 IPADDR=$VIP
    37.                 PREFIX=24
    38.                 GATEWAY=$GATEWAY
    39.                 EOF
    40.                 ifup ${VIP_INTERFACE}
    41.                 # 设置VIP虚拟服务器
    42.                 /usr/sbin/ipvsadm -A -t $VIP:$PORT  -s rr
    43.                 for i in $RIP{1..2};do
    44.                     /usr/sbin/ipvsadm -a -t $VIP:$PORT  -r ${i}
    45.                 done
    46.                 echo -e "\nVIP服务部署成功！配置如下：\n`ipvsadm -ln`"
    47.             else
    48.                 echo "检查VIP是否已经被使用！"
    49.             fi
    50.             ;; 
    51.         stop)
    52.             /usr/sbin/ipvsadm -D -t $VIP:$PORT
    53.             cd /etc/sysconfig/network-scripts/ 
    54.             ifdown ${VIP_INTERFACE} &>/dev/null
    55.             rm -rf ifcfg-${VIP_INTERFACE}
    56.             route del default gw $GATEWAY &>/dev/null
    57.             echo "VIP service  stopped!"
    58.             ;; 
    59.         status) 
    60.             ipvsadm -ln
    61.             ;; 
    62.         *) 
    63.             echo "Usage: $0 {start|stop|status}"
    64.             ;; 
    65.     esac
    66. # 配置RIP
    67. elif [ "$HOSTNAME" = "$RIP_HOSTNAME_1" ];then
    68.     case "$1" in
    69.         start) 
    70.             cd /etc/sysconfig/network-scripts/
    71.             cat > ifcfg-$LO_INTERFACE <<-EOF
    72.             DEVICE=$LO_INTERFACE
    73.             IPADDR=$VIP
    74.             NETMASK=255.255.255.255
    75.             ONBOOT=yes
    76.             NAME=loopback
    77.             EOF
    78.             ifdown $LO_INTERFACE &>/dev/null && ifup ${LO_INTERFACE}
    79.             echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
    80.             echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
    81.             route add default gw $GATEWAY &>/dev/null
    82.             ;; 
    83.         stop) 
    84.             ifdown $LO_INTERFACE &>/dev/null
    85.             cd /etc/sysconfig/network-scripts/
    86.             rm -rf ifcfg-$LO_INTERFACE
    87.             route del default gw $GATEWAY &>/dev/null 
    88.             ;; 
    89.         status) 
    90.             echo "VIP: `ip a | awk '/lo:1/{print $2}'`"
    91.             echo "GATEWAY: `route -n | awk 'NR==3{print $2}'`"
    92.             ;; 
    93.         *) 
    94.             echo "$0: Usage: $0 {start|status|stop}"
    95.             exit 1
    96.             ;;
    97.     esac
    99. elif [ "$HOSTNAME" = "$RIP_HOSTNAME_2" ];then
    100.     case "$1" in
    101.         start) 
    102.             cd /etc/sysconfig/network-scripts/
    103.             cat > ifcfg-$LO_INTERFACE <<-EOF
    104.             DEVICE=$LO_INTERFACE
    105.             IPADDR=$VIP
    106.             NETMASK=255.255.255.255
    107.             ONBOOT=yes
    108.             NAME=loopback
    109.             EOF
    110.             ifdown $LO_INTERFACE &>/dev/null && ifup ${LO_INTERFACE}
    111.             echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
    112.             echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
    113.             route add default gw $GATEWAY &>/dev/null
    114.             ;; 
    115.         stop) 
    116.             ifdown $LO_INTERFACE &>/dev/null
    117.             cd /etc/sysconfig/network-scripts/
    118.             rm -rf ifcfg-$LO_INTERFACE 
    119.             ;; 
    120.         status) 
    121.             echo "VIP: `ip a | awk '/lo:1/{print $2}'`"
    122.             echo "GATEWAY: `route -n | awk 'NR==3{print $2}'`"
    123.             ;; 
    124.         *) 
    125.             echo "$0: Usage: $0 {start|status|stop}"
    126.             exit 1
    127.             ;;
    128.     esac    
    129. fi