mysql主从切换后，haproxy配置咨询

[Jacklli]

What version of MoHA are you using?

最新版

Does this issue reproduce with the latest release?

N/A

What operating system and processor architecture are you using?

N/A

What did you do?

What did you expect to see?

N/A

What did you see instead?

N/A

咨询一下，我的理解，当mysql发生主从切换后，agent会把最新的MySQL主从角色与ip地址对应关系写入etcd。haproxy会将写流量转发到最新的mysql主库ip地址去。我的疑惑是，haproxy通过什么机制感知到etcd里的信息变化，并且将变化准确快速地同步到haproxy的配置里去的呢？

[gczheng]

同问,haproxy 按照同样配置返回都是code: 418

[liuflylove666]

haproxy 如何感知后端主从变化，请dbproxy有开源吗