keepalive高可用

1.安装yum -y install keepalive

2.编辑配置文件vim /etc/keepalive/keepalive.conf

global_defs {
router_id backup-node
}

vrrp_instance VI_1 {
state BACKUP#(如果是主节点写MASTER)
interface eth0
virtual_router_id 51（主备节点一致）
priority 90（主节点要大于从节点）
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.0.2/24（虚ip）
}
}

3.systemctl start keepalived启动