45 lines
897 B
Markdown
45 lines
897 B
Markdown
---
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layout: default
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title: cat master
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parent: CAT
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grand_parent: REST API reference
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nav_order: 30
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has_children: false
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---
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# cat master
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Introduced 1.0
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{: .label .label-purple }
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The cat master operation lists information that helps identify the elected master node.
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## Example
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```
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GET _cat/master?v
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```
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## Path and HTTP methods
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```
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GET _cat/master
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```
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## URL parameters
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All cat master URL parameters are optional.
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In addition to the [common URL parameters]({{site.url}}{{site.baseurl}}/opensearch/rest-api/cat/index#common-url-parameters), you can specify the following parameters:
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Parameter | Type | Description
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:--- | :--- | :---
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master_timeout | Time | The amount of time to wait for a connection to the master node. Default is 30 seconds.
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## Response
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```json
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id | host | ip | node
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ZaIkkUd4TEiAihqJGkp5CA | 172.18.0.3 | 172.18.0.3 | odfe-node2
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```
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