Elasticsearch如何进行跨库查询

在elasticsearch中如何才能进行跨库查询,希望大佬们能指点迷津,谢谢。

你说的跨库是如果是跨索引,使用index1,index2/_search就可以跨索引查询
如果是跨集群,Es也提供了cross cluster来进行跨集群查询

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