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mdserver-web/plugins/keepalived/tpl/keepalived.mysql.note.conf
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! Configuration File for keepalived
global_defs {
# 路由标识,主从保持一致
router_id MYSQL_MHA
}
#检测mysql服务是否在运行。有很多方式,比如进程,用脚本检测等等
vrrp_script chk_mysql_port {
# 这里通过脚本监测
script "{$SERVER_PATH}/scripts/chk.sh mysql"
# 脚本执行间隔,每2s检测一次
interval 2
# 脚本结果导致的优先级变更,检测失败(脚本返回非0)则优先级 -5
weight –5
# 检测连续2次失败才算确定是真失败。会用weight减少优先级(1-255之间)
fall 2
# 检测1次成功就算成功。但不修改优先级
rise 1
}
vrrp_instance VI_1 {
# 这里所有节点定义为BACKUP/MASTER
state BACKUP
# 指定虚拟ip的网卡(可能需要手动查看)
# route -n | grep ^0.0.0.0 | awk '{print $8}'
interface {$ETH_XX}
# 路由器标识,MASTER和BACKUP必须是一致的
virtual_router_id 51
# 定义优先级,数字越大,优先级越高,在同一个vrrp_instance下,MASTER的优先级必须大于BACKUP的优先级
priority 99
# 通知间隔秒数(心跳频率)
advert_int 1
# 不抢占模式,在优先级高的机器上设置即可,优先级低的机器可不设置
nopreempt
# 认证信息配置,主从服务器保持一致
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
# 虚拟IP(VIP) | 根据情况设置
192.168.10.10
}
track_script {
chk_mysql_port
}
}