Initialize Knowledge Base

Target

We will use the Amazon Bedrock Wizard to set up the entire RAG architecture. This process will connect the S3 data source, the Embedding model, and automatically initialize the Vector storage (OpenSearch Serverless).

Implementation Steps

1. Log in to the AWS Management Console and access the Amazon Bedrock service.
2. In the left-hand menu, select Knowledge bases.

3. Click the Create knowledge base button in the top right corner of the screen.

Step 1: Configure Knowledge Base

On the first configuration screen:

1. Knowledge base name: Enter knowledge-base-demo
2. Knowledge Base description - optional: Enter Knowledge Base from AWS Overview (This section requires you to describe the data you have previously uploaded to S3).
3. IAM permissions: Select the option Create and use a new service role.
4. Service role name: Keep the default value suggested by AWS (starting with AmazonBedrockExecutionRoleForKnowledgeBase_...).

5. Click Next.

Step 2: Configure Data Source

Connect to the S3 Bucket containing the documents:

1. Data source name: Enterknowledge-base-demo

2. S3 URI:

   • Click the Browse S3 button.
   • In the pop-up window, select the bucket rag-workshop-demo you created in the previous section.
   • Click Choose.

3. Keep Default configurations. Click Next.

Step 3: Storage & Processing

This is the most critical step to define the AI model and vector storage location:

1. Embeddings model:

   • Click Select model.

   • Select model: Titan Embeddings G1 - Text v2.

2. Vector Store:

   • Vector store creation method: Choose Quick create a new vector store - Recommended
   • Vector store type - new: Choose Amazon OpenSearch Serverless
   • Note: This option allows AWS to automatically create an Amazon OpenSearch Serverless cluster to store data, saving you from manual infrastructure management.

3. Click Next.

Step 4: Review and Create Knowledge Base

1. Review all configuration information on the Review page.
2. Ensure the S3 URI and Model items are correct.
3. Scroll to the bottom of the page and click the Create knowledge base button.

Step 5: Wait for Initialization

After clicking Create, the system will begin the background infrastructure initialization process for the Vector Store.

• Wait time: Approximately 2 - 5 minutes.
• Note: Please do not close the browser during this time.
• Success: When the screen displays a green notification “Knowledge base created successfully”, you have completed this step and are ready for the next section.