问kubernetes中elk调试？

根据文档信息，已成功部署elk集群，但是在部署过后，查看日志，有两个问题，请请教一下该如何处理。

{"type":"log","@timestamp":"2018-12-13T03:04:28Z","tags":["license","warning","xpack"],"pid":1,"message":"License information from the X-Pack plugin could not be obtained from Elasticsearch for the [data] cluster. Error: Request Timeout after 30000ms"}

{"type":"log","@timestamp":"2018-12-13T03:04:30Z","tags":["warning","elasticsearch","admin"],"pid":1,"message":"Unable to revive connection: http://es-cluster:9200/"}