Manage Milvus Connections

This topic describes how to connect to and disconnect from a Milvus server.

Milvus supports two ports, port 19530 and port 9091:

• Port 19530 is for gRPC. It is the default port when you connect to a Milvus server with different Milvus SDKs.

• Port 9091 is for RESTful API. It is used when you connect to a Milvus server with an HTTP client.

The example below connects to the Milvus server with host as localhost and port as 19530 or 9091, and disconnects from it. If the connection is refused, try unblocking the corresponding port.

Connect to a Milvus server

Construct a Milvus connection. Ensure to connect to Milvus server before any operations.

# Run `python3` in your terminal to operate in the Python interactive mode.
from pymilvus import connections
connections.connect(
  alias="default",
  user='username',
  password='password',
  host='localhost',
  port='19530'
)

import { MilvusClient } from "@zilliz/milvus2-sdk-node";
const address = "localhost:19530";
const username = "username";
const password = "password";
const ssl = false;
const milvusClient = new MilvusClient({address, ssl, username, password});

milvusClient, err := client.NewGrpcClient(
  context.Background(), // ctx
  "localhost:19530",    // addr
)
if err != nil {
  log.Fatal("failed to connect to Milvus:", err.Error())
}

final MilvusServiceClient milvusClient = new MilvusServiceClient(
  ConnectParam.newBuilder()
    .withHost("localhost")
    .withPort(19530)
    .build()
);

var milvusClient = new MilvusClient("localhost", username: "username", password: "password");

Return

A Milvus connection created by the passed parameters.

Raises

• NotImplementedError: If handler in connection parameters is not GRPC.
• ParamError: If pool in connection parameters is not supported.
• Exception: If server specified in parameters is not ready, we cannot connect to server.