MySQL主主互备结合keepalived实现高可用
! Configuration File for keepalivedglobal_defs {
notification_email {
root@huangmingming.cn
741616710@qq.com
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance HA_1 {
state BACKUP #master和slave都配置为BACKUP
interface eth0 #指定HA检测的网络接口
virtual_router_id 80 #虚拟路由标识，主备相同
priority 100 #定义优先级，slave设置90
advert_int 1 #设定master和slave之间同步检查的时间间隔
nopreempt #不抢占模式。只在优先级高的机器上设置即可
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress { #设置虚拟IP，可以设置多个，每行一个
192.168.1.208/24 dev eth0 #MySQL对外服务的IP，即VIP
}
}
virtual_server 192.168.1.208 3306 {
delay_loop 2 #每隔2秒查询real server状态
lb_algo wrr #lvs 算法
lb_kinf DR #LVS模式（Direct Route）
persistence_timeout 50
protocol TCP
real_server 192.168.1.210 3306 { #监听本机的IP
weight 1
notify_down /usr/local/keepalived/bin/mysql.sh
TCP_CHECK {
connect_timeout 10 #10秒无响应超时
bingto 192.168.1.208
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
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