64 lines
1.7 KiB
Markdown
64 lines
1.7 KiB
Markdown
---
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layout: default
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title: CAT aliases
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parent: CAT API
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nav_order: 1
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has_children: false
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---
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# CAT aliases
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Introduced 1.0
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{: .label .label-purple }
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The CAT aliases operation lists the mapping of aliases to indices, plus routing and filtering information.
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## Example
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```json
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GET _cat/aliases?v
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```
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To limit the information to a specific alias, add the alias name after your query:
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```json
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GET _cat/aliases/<alias>?v
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```
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If you want to get information for more than one alias, separate the alias names with commas:
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```json
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GET _cat/aliases/alias1,alias2,alias3
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```
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## Path and HTTP methods
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```
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GET _cat/aliases/<alias>
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GET _cat/aliases
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```
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## URL parameters
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All CAT aliases URL parameters are optional.
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In addition to the [common URL parameters]({{site.url}}{{site.baseurl}}/api-reference/cat/index), you can specify the following parameters:
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Parameter | Type | Description
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:--- | :--- | :---
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local | Boolean | Whether to return information from the local node only instead of from the master node. Default is false.
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expand_wildcards | Enum | Expands wildcard expressions to concrete indices. Combine multiple values with commas. Supported values are `all`, `open`, `closed`, `hidden`, and `none`. Default is `open`.
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## Response
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The following response shows that `alias1` refers to a `movies` index and has a configured filter:
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```json
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alias | index | filter | routing.index | routing.search | is_write_index
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alias1 | movies | * | - | - | -
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.opensearch-dashboards | .opensearch-dashboards_1 | - | - | - | -
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```
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To learn more about index aliases, see [Index aliases]({{site.url}}{{site.baseurl}}/opensearch/index-alias).
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