presto主节点日志启动信息出现以下error：
2017-07-12T14:31:30.651+0800 ERROR Discovery-0 io.airlift.discovery.client.CachingServiceSelector Cannot connect to discovery server for refresh (presto/general): Lookup of presto failed for https://master135:8090/v1/service/presto/general
2017-07-12T
