Learning Elastic Stack 6.0

Specifying aliases

Elasticsearch allows the user to create an alias—a virtual index name that can be used to refer to an index or multiple indices. The Elasticsearch index aliases API allows for aliasing an index with a name, with all APIs automatically converting the alias name to the actual index name. 

Say, for example, we want to query against a set of similar indexes. Rather than specifying each of the index names in the query, we can make use of aliases and execute the query against the alias. The alias will internally point to all the indexes and perform a query against them. This will be highly beneficial if we added certain indexes dynamically on a regular basis, so that one application/user performing the query need not worry about ...