1、基于 CentOS 7 构建 LVS-DR 群集。

DS（Director Server）：DIP 192.168.231.132 & VIP 192.168.231.200

[root@132 ~]# nmcli c show

NAME UUID TYPE DEVICE

ens33 c89f4a1a-d61b-4f24-a260-6232c8be18dc ethernet ens33

[root@132 ~]# nmcli c m ens33 +ipv4.addresses 192.168.231.200/24

[root@132 ~]# nmcli c up ens33

[root@132 ~]# yum install ipvsadm -y

[root@132 ~]# ipvsadm -A -t 192.168.231.200:80 -s rr

[root@132 ~]# ipvsadm -a -t 192.168.231.200:80 -r 192.168.231.136 -g -w 1

[root@132 ~]# ipvsadm -a -t 192.168.231.200:80 -r 192.168.231.137 -g -w 1

[root@132 ~]# ipvsadm -ln

IP Virtual Server version 1.2.1 (size=4096)

Prot LocalAddress:Port Scheduler Flags

-> RemoteAddress:Port Forward Weight ActiveConn InActConn

TCP 192.168.231.200:80 rr

-> 192.168.231.136:80 Route 1 0 0

-> 192.168.231.137:80 Route 1 0 0

rs1

[root@137 ~]# yum install net-tools.x86_64

[root@137 ~]# yum install httpd -y

[root@137 ~]# echo "web test pages ip is `hostname -I`" > /var/www/html/index.html

[root@137 ~]# systemctl restart httpd

[root@137 ~]# ifconfig lo:200 192.168.231.200 netmask 255.255.255.255 up

[root@137 ~]# route add -host 192.168.231.200 dev lo

[root@137 ~]# route -n

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

0.0.0.0 192.168.231.2 0.0.0.0 UG 100 0 0 ens33

192.168.231.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33

192.168.231.200 0.0.0.0 255.255.255.255 UH 0 0 0 lo

[root@137 ~]# echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore

[root@137 ~]# echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce

[root@137 ~]# echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore

[root@137 ~]# echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce

rs2

[root@136 ~]# yum install net-tools.x86_64

[root@136 ~]# yum install httpd -y

[root@136 ~]# echo "web test pages ip is `hostname -I`" > /var/www/html/index.html

[root@136 ~]# ifconfig lo:200 192.168.231.200 netmsak 255.255.255.255 up

[root@136 ~]# ifconfig lo:200 192.168.231.200 netmask 255.255.255.255 up

[root@136 ~]# echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore

[root@136 ~]# echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce

[root@136 ~]# echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore

[root@136 ~]# echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce

测试

2、配置nginx负载均衡。

132内网服务器

yum localinstall nginx-1.22.0-1.el7.ngx.x86_64.rpm

[root@localhost ~]# vim /etc/nginx/conf.d/vhost.conf

server {

listen 80;

server_name web1.yunjisuan.com;

location / {

root /usr/share/nginx/html/web1;

index index.html index.htm;

}

access_log /usr/share/nginx/html/web1/logs/access_bbs.log main;

}

[root@localhost ~]# mkdir -p /usr/share/nginx/html/web1/logs

[root@localhost ~]# echo "`hostname -I `web1" > /usr/share/nginx/html/web1/index.html

[root@localhost ~]# nginx -t

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok

nginx: configuration file /etc/nginx/nginx.conf test is successful

[root@localhost ~]# systemctl restart nginx

136内网服务器

yum localinstall nginx-1.22.0-1.el7.ngx.x86_64.rpm

[root@localhost ~]# vim /etc/nginx/conf.d/vhost.conf

server {

listen 80;

server_name web1.yunjisuan.com;

location / {

root /usr/share/nginx/html/web1;

index index.html index.htm;

}

access_log /usr/share/nginx/html/web1/logs/access_bbs.log main;

}

[root@localhost ~]# mkdir -p /usr/share/nginx/html/web1/logs

[root@localhost ~]# echo "`hostname -I `web1" > /usr/share/nginx/html/web1/index.html

[root@localhost ~]# nginx -t

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok

nginx: configuration file /etc/nginx/nginx.conf test is successful

[root@localhost ~]# systemctl restart nginx

137代理服务器

yum localinstall nginx-1.22.0-1.el7.ngx.x86_64.rpm

[root@localhost ~]# vim /etc/nginx/conf.d/lb_test.conf

upstream www_server_pools {

server 192.168.231.132:80 weight=1;

server 192.168.231.136:80 weight=1;

}

server {

listen 80;

server_name web1.haha.com;

location / {

proxy_pass http://www_server_pools;

proxy_set_header Host $host;

}

}

客户端

[root@localhost ~]# vim /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.231.137 web1.haha.com

[root@localhost ~]# for ((i=1;i<=4;i++)); do curl web1.haha.com; done

192.168.231.136 web1

192.168.231.132 web1

192.168.231.136 web1

192.168.231.132 web1

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