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# AWS::Bedrock::KnowledgeBase OpenSearchManagedClusterConfiguration
<a name="aws-properties-bedrock-knowledgebase-opensearchmanagedclusterconfiguration"></a>

Contains details about the Managed Cluster configuration of the knowledge base in Amazon OpenSearch Service. For more information, see [Create a vector index in OpenSearch Managed Cluster](https://docs.amazonaws.cn/bedrock/latest/userguide/knowledge-base-setup-osm.html).

## Syntax
<a name="aws-properties-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-syntax"></a>

To declare this entity in your Amazon CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-syntax.json"></a>

```
{
  "[DomainArn](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-domainarn)" : {{String}},
  "[DomainEndpoint](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-domainendpoint)" : {{String}},
  "[FieldMapping](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-fieldmapping)" : {{OpenSearchManagedClusterFieldMapping}},
  "[VectorIndexName](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-vectorindexname)" : {{String}}
}
```

### YAML
<a name="aws-properties-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-syntax.yaml"></a>

```
  [DomainArn](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-domainarn): {{String}}
  [DomainEndpoint](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-domainendpoint): {{String}}
  [FieldMapping](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-fieldmapping): {{
    OpenSearchManagedClusterFieldMapping}}
  [VectorIndexName](#cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-vectorindexname): {{String}}
```

## Properties
<a name="aws-properties-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-properties"></a>

`DomainArn`  <a name="cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-domainarn"></a>
The Amazon Resource Name (ARN) of the OpenSearch domain.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^arn:aws(-cn|-us-gov|-eusc|-iso(-[b-f])?)?:es:([a-z]{2,}-){2,}\d:\d{12}:domain/[a-z][a-z0-9-]{3,28}$`  
*Maximum*: `2048`  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`DomainEndpoint`  <a name="cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-domainendpoint"></a>
The endpoint URL the OpenSearch domain.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^https://.*$`  
*Maximum*: `2048`  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`FieldMapping`  <a name="cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-fieldmapping"></a>
Contains the names of the fields to which to map information about the vector store.  
*Required*: Yes  
*Type*: [OpenSearchManagedClusterFieldMapping](aws-properties-bedrock-knowledgebase-opensearchmanagedclusterfieldmapping.md)  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`VectorIndexName`  <a name="cfn-bedrock-knowledgebase-opensearchmanagedclusterconfiguration-vectorindexname"></a>
The name of the vector store.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^(?![\-_+.])[a-z0-9][a-z0-9\-_\.]*$`  
*Minimum*: `1`  
*Maximum*: `2048`  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)