负载均衡群集之一LVS
调度服务器：一块网卡：
Vmnet1：192.168.80.100
-------------------------加载LVS内核模块----------------------
LVS现在已成为Linux内核的一部分，默认编译为ip_vs模块，必要时能够自动调用。以下操作可以手动加载ip_vs模块，并查看当前系统中ip_vs模块的版本信息
# cat /proc/net/ip_vs
cat: /proc/net/ip_vs: 没有那个文件或目录
# modprobe ip_vs //加载ip_vs模块，
# cat /proc/net/ip_vs //查看ip_vs版本信息
# rpm -ivh /mnt/Packages/ipvsadm-1.27-7.el7.x86_64.rpm //安装管理软件，不需要启动
---------------------DR模式调度器配置------（调度器与各服务器在同个网段内）-------------
------------------注意：80.188是调度器和各真实服务器要共同虚拟出的一个地址---------------
# vi dr.sh
#!/bin/bash
#
ifconfig ens33:0 192.168.80.188 broadcast 192.168.80.188 netmask 255.255.255.255 up
route add -host 192.168.80.188 dev ens33:0
ipvsadm -C
ipvsadm -A -t 192.168.80.188:80 -s rr
ipvsadm -a -t 192.168.80.188:80 -r 192.168.80.101:80 -g
ipvsadm -a -t 192.168.80.188:80 -r 192.168.80.102:80 -g
ipvsadm –Ln
# sh dr.sh
# ifconfig
192.168.80.101服务器：
Vmnet1内网：192.168.80.101
# yum install -y httpd
# vi /etc/httpd/conf/httpd.conf
ServerName www.aa.com
# vi /var/www/html/index.html
Server aa
# service httpd restart
------DR模式,各真实服务器配置---虚拟地址是相同的---
# vi web.sh
#!/bin/bash
#haha
ifconfig lo:0 192.168.80.188 broadcast 192.168.80.188 netmask 255.255.255.255 up
route add -host 192.168.80.188 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/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p &>/dev/null
# sh web.sh
# ifconfig
http://i2.运维网.com/images/blog/201803/08/079bb0e17699c393aa8950aea36e9b22.png
192.168.80.102服务器：
Vmnet1内网：192.168.80.102
# yum install -y httpd
# vi /etc/httpd/conf/httpd.conf
ServerName www.bb.com
# vi /var/www/html/index.html
Server bb
# service httpd restart
------DR模式,各真实服务器配置---虚拟地址是相同的---
# vi web.sh
#!/bin/bash
#haha
ifconfig lo:0 192.168.80.188 broadcast 192.168.80.188 netmask 255.255.255.255 up
route add -host 192.168.80.188 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/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p &>/dev/null
# sh web.sh
http://i2.运维网.com/images/blog/201803/08/19258a98ed3de727afdd9ae354d429f1.png
真机浏览器测试：
Vmnet1：192.168.80.88
浏览器输入：http://192.168.80.188/会轮流出现192.168.80.101和192.168.80.102的页面
http://i2.运维网.com/images/blog/201803/08/6899187e2b2f73fd840b3c18b3e7db20.png
友情链接地址：负载均衡群集之—LVS-NAThttp://blog.运维网.com/13572519/2084181
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