keepalived+lvs集群
准备四台服务器，准备好基础环境10.0.0.20dr1 负载均衡器
10.0.0.23dr2 负载均衡器
10.0.0.21rs1 web1
10.0.0.22rs2 web2
其中两台做dr模式负载均衡，两台做web服务器，测试两台dr搭建成功
搭建keepalived:
1、在两台dr上安装Keepalived
2.修改配置文件(清空原有配置文件)
# cd /etc/keepalived/
# vim keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id Director1 //两边是一样的
}
vrrp_instance VI_1 {
state MASTER//另外一台机器是BACKUP
interface eth0//心跳网卡DIP那一块网卡
virtual_router_id 51
priority 50//优先级
advert_int 1 //检查间隔，单位秒
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.122.254/24 dev eth0 //VIP随便自己定义只要是同一个网段就可以
}
}
virtual_server 192.168.122.254 80 {//LVS 配置，VIP
delay_loop 3 //服务论询的时间间隔
lb_algo rr //LVS 调度算法
lb_kind DR // LVS 集群模式
protocol TCP
real_server192.168.122.30 80 {
weight 1
TCP_CHECK {
connect_timeout 3
}
}
real_server 192.168.122.40 80 {
weight 1
TCP_CHECK {
connect_timeout 3
}
}
}
3、拷贝修改好的dr上的keepalived.conf到另外一台上
4、拷贝后,修改配置文件
state BACKUP
priority 100
5、两个dr上启动keepalived服务
rhel6:
# service keepalived start
rhel7:
# systemctl start keepalived
6、测试
1）观察lvs路由条目
2）观察vip地址在哪台机器上
3）客户端浏览器访问vip
4）关闭master上的keepalived服务，再次访问vip
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