Manage Milvus Connections

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

Ensure to connect to Milvus server before any operations.

Below example connects to a Milvus server with host as localhost and port as 19530 and disconnects from it.

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", 
  host='localhost', 
  port='19530'
)

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

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()
);

connect -h localhost -p 19530 -a default

Parameter	Description
`alias`	Alias of the Milvus connection to construct.
`host`	IP address of the Milvus server.
`port`	Port of the Milvus server.

Parameter	Description
`address`	Address of the Milvus connection to construct.

Parameter	Description
`ctx`	Context to control API invocation process.
`addr`	Address of the Milvus connection to construct.

Parameter	Description
`Host`	IP address of the Milvus server.
`Port`	Port of the Milvus server.

Option	Description
-h (Optional)	The host name. The default is "127.0.0.1".
-p (Optional)	The port number. The default is "19530".
-a (Optional)	The alias name of the Milvus link. The default is "default".
-D (Optional)	Flag to disconnect from the Milvus server specified by an alias. The default alias is "default".

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.

Disconnect from a Milvus server

Disconnect from a Milvus server.

Python Java GO Node.js CLI

connections.disconnect("default")

await milvusClient.closeConnection();

milvusClient.Close()

milvusClient.close()

connect -D

Parameter	Description
`alias`	Alias of the Milvus server to disconnect from.

Limits

The maximum number of connections is 65,536.

What's next

Having connected to a Milvus server, you can: