elasticsearch/docs/reference/cat/alias.asciidoc
Liam Thompson 33a71e3289
[DOCS] Refactor book-scoped variables in docs/reference/index.asciidoc (#107413)
* Remove `es-test-dir` book-scoped variable

* Remove `plugins-examples-dir` book-scoped variable

* Remove `:dependencies-dir:` and `:xes-repo-dir:` book-scoped variables

- In `index.asciidoc`, two variables (`:dependencies-dir:` and `:xes-repo-dir:`) were removed.
- In `sql/index.asciidoc`, the `:sql-tests:` path was updated to fuller path
- In `esql/index.asciidoc`, the `:esql-tests:` path was updated idem

* Replace `es-repo-dir` with `es-ref-dir`

* Move `:include-xpack: true` to few files that use it, remove from index.asciidoc
2024-04-17 14:37:07 +02:00

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2.6 KiB
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[[cat-alias]]
=== cat aliases API
++++
<titleabbrev>cat aliases</titleabbrev>
++++
[IMPORTANT]
====
cat APIs are only intended for human consumption using the command line or the
{kib} console. They are _not_ intended for use by applications. For application
consumption, use the <<aliases,aliases API>>.
====
Retrieves the cluster's <<aliases,index aliases>>, including filter and routing
information. The API does not return data stream aliases.
[[cat-alias-api-request]]
==== {api-request-title}
`GET _cat/aliases/<alias>`
`GET _cat/aliases`
[[cat-alias-api-prereqs]]
==== {api-prereq-title}
* If the {es} {security-features} are enabled, you must have the
`view_index_metadata` or `manage` <<privileges-list-indices,index privilege>>
for any alias you retrieve.
[[cat-alias-api-path-params]]
==== {api-path-parms-title}
`<alias>`::
(Optional, string) Comma-separated list of aliases to retrieve. Supports
wildcards (`*`). To retrieve all aliases, omit this parameter or use `*` or
`_all`.
[[cat-alias-api-query-params]]
==== {api-query-parms-title}
include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=http-format]
include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=cat-h]
include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=help]
include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=local]
include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=cat-s]
include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=cat-v]
include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=expand-wildcards]
[[cat-alias-api-example]]
==== {api-examples-title}
////
Hidden setup for example:
[source,console,id=cat-aliases-example]
----
PUT test1
{
"aliases": {
"alias1": {},
"alias2": {
"filter": {
"match": {
"user.id": "kimchy"
}
}
},
"alias3": {
"routing": "1"
},
"alias4": {
"index_routing": "2",
"search_routing": "1,2"
}
}
}
----
////
[source,console]
----
GET _cat/aliases?v=true
----
// TEST[continued]
The API returns the following response:
[source,txt]
----
alias index filter routing.index routing.search is_write_index
alias1 test1 - - - -
alias2 test1 * - - -
alias3 test1 - 1 1 -
alias4 test1 - 2 1,2 -
----
// TESTRESPONSE[s/[*]/[*]/ non_json]
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.