MySQL Load Balance about nerv HOT 3 OPEN

模板：
lvs->lvs_host
mysql_proxy->proxy_host
mysql->host

工作

1. /lvs/DirectorServer
   create：部署keepalived
   setup：配置keepalived，实现lvs HA，mysql包路由
   2./db/mysql/Server
   create: 部署keepalived，mysql
   setup：配置keepalived，实现mysql HA
   3./db/mysql/Proxy
   create:部署keepalived, proxy
   setup: 配置keepalived，实现proxy HA

from nerv.

All services in the cloud must provide a management api . Apps or others services use it to setup configuration

from nerv.

solution2：sync config from file server。config as code

from nerv.