• Administration Guide

Authenticate User Access

This guide explains how to manage user authentication in Milvus, including enabling authentication, connecting as a user, and modifying user credentials.

  • TLS and user authentication are two distinct security approaches. If you have enabled both user authentication and TLS in your Milvus system, you must provide a username, password, and certificate file paths. For information on how to enable TLS, refer to Encryption in Transit.

  • The code snippets on this page use new MilvusClient (Python) to interact with Milvus. New MilvusClient SDKs for other languages will be released in future updates.

Enable user authentication

Set in milvus.yaml as true when configuring Milvus to enable authentication.

As of Milvus Helm Chart 4.0.0, you can enable user authentication by modifying values.yaml as follows:

  user.yaml: |+
        authorizationEnabled: true

Connect to Milvus with authentication

After enabling authentication, you need to connect to Milvus using a username and password. By default, the root user is created with the password Milvus when Milvus is initiated. Here is an example of how to connect to Milvus with authentication enabled using the default root user:

# use default `root` user to connect to Milvus

from pymilvus import MilvusClient

client = MilvusClient(
    uri='http://localhost:19530', # replace with your own Milvus server address
If you fail to provide a valid token when connecting to Milvus with authentication enabled, you will receive a gRPC error.

Create a new user

Once connected as the default root user, you can create and authenticate a new user as follows:

# create a user

# verify the user has been created


# output
# {'user_name': 'user_1', 'roles': ()}

For more information on creating users, refer to create_user().

Connect to Milvus with a new user

Connect using the credentials of the newly created user:

# connect to milvus with the newly created user

client = MilvusClient(

Update user password

Change the password for an existing user with the following code:

# update password


For more information on updating user passwords, refer to update_password().

If you forget your old password, Milvus provides a configuration item that allows you to designate certain users as super users. This eliminates the need for the old password when you reset the password.

By default, the field in the Milvus configuration file is empty, meaning that all users must provide the old password when resetting their password. However, you can designate specific users as super users who do not need to provide the old password. In the snippet below, root and foo are designated as super users.

You should add the below configuration item in the Milvus configuration file that governs the running of your Milvus instance.

        superUsers: root, foo

Drop a user

To drop a user, use the drop_user() method.

To drop a user, you cannot be the user being dropped. Otherwise, an error will be raised.

List all users

List all the users.

# list all users



  1. Username must not be empty, and must not exceed 32 characters in length. It must start with a letter, and only contains underscores, letters, or numbers.
  2. Password must have at least 6 characters and must not exceed 256 characters in length.

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