mongodirector.com子域名：
sg-frill-region-6153-10124-mysql-master.servers.mongodirector.com
sg-bitvisibility-mysql-6137-mysql-master.servers.mongodirector.com
sg-real-ip-52744.servers.mongodirector.com
sg-bitvisibility-mysql-51120.servers.mongodirector.com
sg-bitvisibility-mysql-2687-6121-mysql-master.servers.mongodirector.com