nginx+keepalived高可用

Question

问题是当nginx服务宕机且keepalived正常运行时，keepalived中的vip不会切换到备份机上吗
这个高可用，指的是当这台服务器宕机时，keeoalived才会发生漂移吗？

Answer 1

keepalived 需要添加nginx状态检测脚本，（例子加粗部分），当nginx异常时降权重，自然vip就会漂移

vrrp_script chk_ng
{
script "/etc/keepalived/chk_nginx.sh"
interval 1
weight -30
}

vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.30.0.106
}
track_script {
chk_ng
}
}