目录
1、环境准备
2、配置lvs服务启动脚本
1、在RS上分别配置服务启动脚本
2、在lvs director上配置服务启动脚本
3、客户端测试
配置LVS-DR模式主要注意的有
1、vip绑定在RS的lo接口；
2、RS做arp抑制；
1、环境准备
VIP=192.168.95.10
RS1=192.168.95.11
RS2=192.168.95.12
网络接口：ens33
在两台RS上分别准备web访问环境
cd /usr/local/nginx/html/
echo "web test page,`hostname -I`." > index.html
systemctl restart nginx
2、配置lvs服务启动脚本
1、在RS上分别配置服务启动脚本
[root@node3 ~]# vim /etc/init.d/lvs_rs
#!/bin/sh
#
# Startup script handle the initialisation of LVS
# chkconfig: - 28 72
# description: Initialise the Linux Virtual Server for DR
#
### BEGIN INIT INFO
# Provides: ipvsadm
# Required-Start: $local_fs $network $named
# Required-Stop: $local_fs $remote_fs $network
# Short-Description: Initialise the Linux Virtual Server
# Description: The Linux Virtual Server is a highly scalable and highly
# available server built on a cluster of real servers, with the load
# balancer running on Linux.
# description: start LVS of DR-RIP
LOCK=/var/lock/ipvsadm.lock
VIP=192.168.95.10
. /etc/rc.d/init.d/functions
start() {
PID=`ifconfig | grep lo:10 | wc -l`
if [ $PID -ne 0 ];
then
echo "The LVS-DR-RIP Server is already running !"
else
/sbin/ifconfig lo:10 $VIP netmask 255.255.255.255 broadcast $VIP up
/sbin/route add -host $VIP dev lo:10
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/ens33/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/ens33/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
/bin/touch $LOCK
echo "starting LVS-DR-RIP server is ok !"
fi
}
stop() {
/sbin/route del -host $VIP dev lo:10
/sbin/ifconfig lo:10 down >/dev/null
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/ens33/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/ens33/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
rm -rf $LOCK
echo "stopping LVS-DR-RIP server is ok !"
}
status() {
if [ -e $LOCK ];
then
echo "The LVS-DR-RIP Server is already running !"
else
echo "The LVS-DR-RIP Server is not running !"
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status
;;
*)
echo "Usage: $1 {start|stop|restart|status}"
exit 1
esac
exit 0
开启lvs_rs的自启动
chmod +x /etc/init.d/lvs_rs
chkconfig --add lvs_rs
service lvs_rs start
将配置好的脚本发送给另一台web服务器并开启
scp /etc/init.d/lvs_rs 192.168.80.12:/etc/init.d/
2、在lvs director上配置服务启动脚本
vim /etc/init.d/lvs_dr
# Provides: ipvsadm
# Required-Start: $local_fs $network $named
# Required-Stop: $local_fs $remote_fs $network
# Short-Description: Initialise the Linux Virtual Server
# Description: The Linux Virtual Server is a highly scalable and highly
# available server built on a cluster of real servers, with the load
# balancer running on Linux.
# description: start LVS of DR
LOCK=/var/lock/ipvsadm.lock
VIP=192.168.95.10
RIP1=192.168.95.11
RIP2=192.168.95.12
DipName=ens33
. /etc/rc.d/init.d/functions
start() {
PID=`ipvsadm -Ln | grep ${VIP} | wc -l`
if [ $PID -gt 0 ];
then
echo "The LVS-DR Server is already running !"
else
#Set the Virtual IP Address
/sbin/ifconfig ${DipName}:10 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev ${DipName}:10
#Clear IPVS Table
/sbin/ipvsadm -C
#Set Lvs
/sbin/ipvsadm -At $VIP:80 -s wrr
/sbin/ipvsadm -at $VIP:80 -r $RIP1:80 -g -w 2
/sbin/ipvsadm -at $VIP:80 -r $RIP2:80 -g -w 1
/bin/touch $LOCK
#Run Lvs
echo "starting LVS-DR Server is ok !"
fi
}
stop() {
#clear Lvs and vip
/sbin/ipvsadm -C
/sbin/route del -host $VIP dev ${DipName}:10
/sbin/ifconfig ${DipName}:10 down >/dev/null
rm -rf $LOCK
echo "stopping LVS-DR server is ok !"
}
status() {
if [ -e $LOCK ];
then
echo "The LVS-DR Server is already running !"
else
echo "The LVS-DR Server is not running !"
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status
;;
*)
echo "Usage: $1 {start|stop|restart|status}"
exit 1
esac
exit 0
开启lvs_rs的自启动文章来源：https://www.toymoban.com/news/detail-640626.html
chmod +x /etc/init.d/lvs_dr
chkconfig --add lvs_dr
service lvs_rs start
相关参数及说明文章来源地址https://www.toymoban.com/news/detail-640626.html
ipvsadm –help
-A 添加虚拟服务器
-t 设置群集地址（VIP，Virtual IP）
-s 指定负载调度算法
-a 添加真实服务器
-d 删除真实服务器
-r 指定真实服务器（Real Server）的地址
-m 使用NAT模式；-g、-i分别对应DR、TUN模式
-w 为节点服务器设置权重，默认为1
3、客户端测试
for ((i=1;i<=6;i++)); do curl 192.168.95.10; done到了这里，关于web集群学习:基于CentOS 7构建 LVS-DR 群集并配置服务启动脚本的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！
