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        yum install ipvsadm keepalived -y
net.ipv4.ip_forward=1
//proc响应关闭重定向功能
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.ens33.send_redirects = 0
sysctl -p     这条命令是让以上配置生效
cp ifcfg-ens33 ifcfg-ens33:0
vim ifcfg-ens33:0
 删除原来所有信息,添加以下代码:
DEVICE=ens33:0
ONBOOT=yes
IPADDR=192.168.100.10
NETMASK=255.255.255.0
ifup ens33:0

#!/bin/bash
GW=192.168.100.1
VIP=192.168.100.10
RIP1=192.168.100.221
RIP2=192.168.100.222
case "$1" in
start)
        /sbin/ipvsadm --save > /etc/sysconfig/ipvsadm
        systemctl start ipvsadm
        /sbin/ifconfig ens33:0 $VIP broadcast $VIP netmask 255.255.255.255 broadcast $VIP up
        /sbin/route add -host $VIP dev ens33:0
        /sbin/ipvsadm -A -t $VIP:80 -s rr
        /sbin/ipvsadm -a -t $VIP:80 -r $RIP1:80 -g
        /sbin/ipvsadm -a -t $VIP:80 -r $RIP2:80 -g
        echo "ipvsadm starting------------------[ok]"
        ;;
        stop)
        /sbin/ipvsadm -C
        systemctl stop ipvsadm
        ifconfig ens33:0 down
        route del $VIP
        echo "ipvsamd stoped--------------------[ok]"
        ;;
stop)
       /sbin/ipvsadm -C
        systemctl stop ipvsadm
        ifconfig ens33:0 down
        route del $VIP
        echo "ipvsamd stoped--------------------[ok]"
        ;;
        status)
        if [ ! -e ar/lock/subsys/ipvsadm ];then
        echo "ipvsadm stoped--------------------"
        exit 1
                else
                echo "ipvsamd Runing-------------[ok]"
        fi
        ;;
        *)
        echo "Usage: $0 {start|stop|status}"
        exit 1
        esac
        exit 0
chmod +x dr.sh
service dr.sh start

yum install httpd -y
systemctl start httpd.service   //开启服务
路径:/var/www/html
echo "this is accp web" > index.html
1、路径:/etc/sysconfig/network-scripts/
2、复制网卡信息加以修改
cp ifcfg-lo ifcfg-lo:0
3、vim ifcfg-lo:0
删除原来所有信息,添加以下内容:
DEVICE=lo:0
IPADDR=192.168.100.10
NETMASK=255.255.255.0
ONBOOT=yes
#!/bin/bash
VIP=192.168.100.10
        case "$1" in
        start)
                ifconfig lo:0 $VIP netmask 255.255.255.255 broadcast $VIP
                /sbin/route add -host $VIP dev lo:0
        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/lo/arp_ignore
        echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
        sysctl -p > /dev/null 2>&1
        echo "RealServer Start OK "
        ;;
        stop)
                ifconfig lo:0 down
                route del $VIP /dev/null 2>&1
                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
    echo "RealServer Stoped"
                ;;
        *)
                echo "Usage: $0 {start|stop}"
                exit 1
        esac
        exit 0
chmod +x web.sh           //添加权限
service web.sh start      //启动服务
ifup lo:0

路径:/var/www/html
echo "this is benet web" > index.html







systemctl start keepalived.service


systemctl start keepalived.service
ifdown ens33:0



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