目的：使用lvs+keepalived架构架构实现后端web服务器（该web服务器要求搭建wordpress博客站）的负载均衡

最终客户端访问域名     我的名字.wordpress.cn 能够访问搭建的博客站 ，达到负载均衡的目的

IP	主机名	角色
192.168.26.101	rs1	后端真实服务器/nginx
192.168.26.102	rs2	后端真实服务器/nginx
192.168.26.103	master	keepalived服务器master
192.168.26.104	backup	keepalived服务器backup
192.168.26.105	nfs	Nfs服务器
192.168.26.201	web	数据库服务器
192.168.26.12	cesi	客户端

 

一.基础环境搭建

1.1master配置

1.1.1安装配置keepalived

[root@master ~]# yum -y install keepalived

[root@master ~]# cat /etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs { router_id master } vrrp_instance VI_1 { state MASTER interface ens33 virtual_router_id 51 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.26.222/24 dev ens33 label ens33:1 } } virtual_server 192.168.26.222 80 { delay_loop 6 lb_algo wrr lb_kind DR # persistence_timeout 50 protocol TCP real_server 192.168.26.101 80 { weight 1 HTTP_GET { url { path / status_code 200 } } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } real_server 192.168.26.102 80 { weight 1 HTTP_GET { url { path / status_code 200 } } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } 

 1.1.2查看下ipvsadm -ln是否帮你自动添加了lvs集群规则

[root@master ~]# systemctl restart keepalived.service    #生效   
[root@master ~]# yum -y install ipvsadm                   
[root@master ~]# ipvsadm -ln                             #查看当前ipvs模块中记录的连接
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.26.222:80 wrr
  -> 192.168.26.101:80            Route   1      0          0         
  -> 192.168.26.102:80            Route   1      0          0         

 1.2Backup配置

[root@backup ~]#  yum -y install keepalived
[root@backup ~]# cat /etc/keepalived/keepalived.conf 
! Configuration File for keepalived
global_defs {
    router_id backup
}

vrrp_instance VI_1 {
 state BACKUP
 interface ens33
 virtual_router_id 51
 priority 100
 advert_int 1
 authentication {
     auth_type PASS
     auth_pass 1111
 } 
 virtual_ipaddress {
     192.168.26.222/24 dev ens33 label ens33:1
 }
}

virtual_server 192.168.26.222 80 {
 delay_loop 6
 lb_algo wrr
 lb_kind DR
 # persistence_timeout 50
 protocol TCP

 real_server 192.168.26.101 80 {
    weight 1
    HTTP_GET {
   url {
  path /
  status_code 200
  } 
   }
  connect_timeout 3
  nb_get_retry 3
  delay_before_retry 3
 }

 real_server 192.168.26.102 80 {
      weight 1
      HTTP_GET {
       ur