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当kibana配置都确定无问题时，报如下错误信息 kibana.yml 的url配置为ip时：
[error][status][plugin:[email protected]] Status changed from yellow to red - Unable to connect to Elasticsearch at http
[08:26:27.051] [warning][admin][elasticsearch] No living connections
[08:26:29.006] [warning][admin][elasticsearch] Unable to revive connection:
[08:26:29.007] [warning][admin][elasticsearch] No living connections
[08:26:29.553] [warning][admin][elasticsearch] Unable to revive connection:
[08:26:29.555] [warning][admin][elasticsearch] No living connections
[08:26:31.512] [warning][admin][elasticsearch] Unable to revive connection:
[08:26:31.516] [warning][admin][elasticsearch] No living connections
[08:26:32.060] [warning][admin][elasticsearch] Unable to revive connection:
[08:26:32.060] [warning][admin][elasticsearch] No living connections
[08:26:34.022] [warning][admin][elasticsearch] Unable to revive connection:
[08:26:34.024] [warning][admin][elasticsearch] No living connections
[08:26:34.564] [warning][admin][elasticsearch] Unable to revive connection:
[08:26:34.565] [warning][admin][elasticsearch] No living connections
[08:26:36.534] [warning][admin][elasticsearch] Unable to revive connection:
[08:26:36.537] [warning][admin][elasticsearch] No living connections
解决办法
改变 kibana.yml 的 elasticsearch.url 为 http://127.0.0.1:9200，有可能是DNS解析的问题