ui settings Elasticsearch plugin is red

kibana启动报错：信息如下：
[root@elasticsearch01 ~]# log [09:47:36.481] [info][status][plugin:kibana@5.4.0] Status changed from uninitialized to green - Ready
log [09:47:36.562] [info][status][plugin:elasticsearch@5.4.0] Status changed from uninitialized to yellow - Waiting for Elasticsearch
log [09:47:36.584] [info][status][plugin:console@5.4.0] Status changed from uninitialized to green - Ready
log [09:47:36.598] [info][status][plugin:metrics@5.4.0] Status changed from uninitialized to green - Ready
log [09:47:36.728] [error][status][plugin:elasticsearch@5.4.0] Status changed from yellow to red - Service Unavailable
log [09:47:36.729] [info][status][plugin:timelion@5.4.0] Status changed from uninitialized to green - Ready
log [09:47:36.732] [info][listening] Server running at http://10.16.80.6:5601
log [09:47:36.733] [error][status][ui settings] Status changed from uninitialized to red - Elasticsearch plugin is red