cat aliases API | Elasticsearch Reference [7.5]

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cat aliases APIedit

Returns information about currently configured aliases to indices, including filter and routing information.

Requestedit

GET /_cat/aliases/<alias>

GET /_cat/aliases

Path parametersedit

<alias>: (Optional, string) Comma-separated list or wildcard expression of index alias names used to limit the request.

Query parametersedit

format: (Optional, string) Short version of the HTTP accept header. Valid values include JSON, YAML, etc.
h: (Optional, string) Comma-separated list of column names to display.
help: (Optional, boolean) If true, the response includes help information. Defaults to false.
local: (Optional, boolean) If true, the request retrieves information from the local node only. Defaults to false, which means information is retrieved from the master node.
s: (Optional, string) Comma-separated list of column names or column aliases used to sort the response.
v: (Optional, boolean) If true, the response includes column headings. Defaults to false.

Examplesedit

GET /_cat/aliases?v

The API returns the following response:

alias  index filter routing.index routing.search is_write_index
alias1 test1 -      -            -              -
alias2 test1 *      -            -              -
alias3 test1 -      1            1              -
alias4 test1 -      2            1,2            -

This response shows that alias2 has configured a filter, and specific routing configurations in alias3 and alias4.

If you only want to get information about specific aliases, you can specify the aliases in comma-delimited format as a URL parameter, e.g., /_cat/aliases/alias1,alias2.