Get index alias APIedit
Returns information about one or more index aliases.
An index alias is a secondary name used to refer to one or more existing indices.
Most Elasticsearch APIs accept an index alias in place of an index name.
GET /twitter/_alias/alias1
Path parametersedit
-
<alias> -
(Optional, string) Comma-separated list or wildcard expression of index alias names used to limit the request.
To retrieve information for all index aliases, use a value of
_allor*. -
<index> - (Optional, string) Comma-separated list or wildcard expression of index names used to limit the request.
Query parametersedit
-
allow_no_indices -
(Optional, boolean) If
true, the request does not return an error if a wildcard expression or_allvalue retrieves only missing or closed indices.This parameter also applies to index aliases that point to a missing or closed index.
Defaults to
true. -
expand_wildcards -
(Optional, string) Controls what kind of indices that wildcard expressions can expand to. Multiple values are accepted when separated by a comma, as in
open,hidden. Valid values are:-
all - Expand to open and closed indices, including hidden indices.
-
open - Expand only to open indices.
-
closed - Expand only to closed indices.
-
hidden -
Expansion of wildcards will include hidden indices.
Must be combined with
open,closed, or both. -
none - Wildcard expressions are not accepted.
Defaults to
all. -
-
ignore_unavailable -
(Optional, boolean) If
true, missing or closed indices are not included in the response. Defaults tofalse. -
local -
(Optional, boolean) If
true, the request retrieves information from the local node only. Defaults tofalse, which means information is retrieved from the master node.
Examplesedit
Get all aliases for an indexedit
You can add index aliases during index creation using a create index API request.
The following create index API request creates the logs_20302801 index
with two aliases:
-
current_day -
2030, which only returns documents in thelogs_20302801index with ayearfield value of2030
PUT /logs_20302801
{
"aliases" : {
"current_day" : {},
"2030" : {
"filter" : {
"term" : {"year" : 2030 }
}
}
}
}
The following get index alias API request returns all aliases
for the index logs_20302801:
GET /logs_20302801/_alias/*
The API returns the following response:
{
"logs_20302801" : {
"aliases" : {
"current_day" : {
},
"2030" : {
"filter" : {
"term" : {
"year" : 2030
}
}
}
}
}
}
Get a specific aliasedit
The following index alias API request returns the 2030 alias:
GET /_alias/2030
The API returns the following response:
{
"logs_20302801" : {
"aliases" : {
"2030" : {
"filter" : {
"term" : {
"year" : 2030
}
}
}
}
}
}
Get aliases based on a wildcardedit
The following index alias API request returns any alias that begin with 20:
GET /_alias/20*
The API returns the following response:
{
"logs_20302801" : {
"aliases" : {
"2030" : {
"filter" : {
"term" : {
"year" : 2030
}
}
}
}
}
}