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Milvus connection

Milvus connection

Use the Milvus connection to store and confirm the accuracy of your credentials and connection details to access a Milvus vector store.

Milvus is a vector database that is built for scalable similarity search. You can use the Milvus connection to connect to the Milvus service inside IBM watsonx.data. Alternatively, you can connect to a stand-alone Milvus instance that you provision yourself.

Supported versions for stand-alone Milvus

If you provision your own instance of Milvus, the supported versions are v2.0.0-PreGA and later.

Prerequisite to connect to a Milvus instance in watsonx.data

Use the watsonx.data console to provision a Milvus instance in watsonx.data:

Prerequisite to connect to a stand-alone Milvus instance

Install and set up Milvus:

Create a connection to Milvus

To create the connection asset, you need these connection details:

  • Hostname: Hostname of the Milvus service
  • Port: Port number of the Milvus service
  • Database (optional): Database name
  • Username and Password: The username and associated password to access the for Milvus service. If you are connecting to the Milvus service in watsonx.data, use the username and password that you use to access the watsonx.data instance.
  • SSL certificate: The SSL certificate of the host to be trusted. The certificate is needed only when the host certificate is not signed by a known certificate authority.

Choose the method for creating a connection based on where you are in the platform

In a project
Click Assets > New asset > Connect to a data source. See Adding a connection to a project.

In a catalog
Click Add to catalog > Connection. See Adding a connection asset to a catalog.

In a deployment space
Click Import assets > Data access > Connection. See Adding data assets to a deployment space.

In the Platform assets catalog
Click New connection. See Adding platform connections.


  • Platform assets catalog

  • Other catalogs (IBM Knowledge Catalog)

Test the connection

After you enter the connection details, credentials, and optional SSL certificate, click Test connection to confirm that you can connect to the Milvus instance.


The Milvus connection is a testing mechanism to store and confirm the accuracy of your credentials and connection details to access the Milvus instance. Because Milvus is a vector store, you cannot browse data from the connection or read data from it.

Learn more

Related connection: IBM watsonx.data connection

Parent topic: Supported connections

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