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This class serves as an initializer for a Milvus client instance. Upon successful connection to the Milvus instance, the client can execute various operations.


import { MilvusClient } from "@zilliz/milvus2-sdk-node";

const milvusClient = new MilvusClient({
  address: "",
  ssl: false, // deprecated on `node sdk v2.2.12`+
  username: "optional",
  password: "optional",

Now you can use all methods of the client, like client.createCollection, client.createIndex, client.loadCollection, to communicate with the Milvus server.


addressThe Milvus IP addressString''
ssl?SSL connection. It is false by default, if you are using Zilliz Cloud, set it to true.Booleanfalse
username?The username used to connect to MilvusStringmilvus
address?The password used to connect to MilvusStringmilvus
maxRetries?The number of retries for the grpc method, by default: 3Number3
retryDelay?The delay between attempts at retrying a failed grpc method in ms, by default: 30Number30
channelOptions?an optional configuration object that can be passed to a gRPC client when creating a channel to connect to a gRPC serverObject
tls?TLS configurationObject

TLS config object

rootCertPathThe file path to the root certificate used for TLS/SSL connectionString'/path/to/my/cert'
privateKeyPath?The file path to the private key used for SSL connectionBoolean'/path/to/my/private_key'
certChainPath?The file path to the certificate chain used for TLS/SSL connectionString'/path/to/my/cert/chain'
verifyOptions?Options for certificate verification during TLS/SSL connection (e.g., 'verify_peer')String
serverName?The server name used for certificate verification during TLS/SSL connectionString


export interface ChannelOptions {
  "grpc.ssl_target_name_override"?: string;
  "grpc.primary_user_agent"?: string;
  "grpc.secondary_user_agent"?: string;
  "grpc.default_authority"?: string;
  "grpc.keepalive_time_ms"?: number;
  "grpc.keepalive_timeout_ms"?: number;
  "grpc.keepalive_permit_without_calls"?: number;
  "grpc.service_config"?: string;
  "grpc.max_concurrent_streams"?: number;
  "grpc.initial_reconnect_backoff_ms"?: number;
  "grpc.max_reconnect_backoff_ms"?: number;
  "grpc.use_local_subchannel_pool"?: number;
  "grpc.max_send_message_length"?: number;
  "grpc.max_receive_message_length"?: number;
  "grpc.enable_http_proxy"?: number;
  /* http_connect_target and http_connect_creds are used for passing data
   * around internally, and should not be documented as public-facing options
  "grpc.http_connect_target"?: string;
  "grpc.http_connect_creds"?: string;
  "grpc.default_compression_algorithm"?: CompressionAlgorithms;
  "grpc.enable_channelz"?: number;
  "grpc.dns_min_time_between_resolutions_ms"?: number;
  "grpc.enable_retries"?: number;
  "grpc.per_rpc_retry_buffer_size"?: number;
  /* This option is pattered like a core option, but the core does not have
   * this option. It is closely related to the option
   * grpc.per_rpc_retry_buffer_size, which is in the core. The core will likely
   * implement this functionality using the ResourceQuota mechanism, so there
   * will probably not be any collision or other inconsistency. */
  "grpc.retry_buffer_size"?: number;
  "grpc.max_connection_age_ms"?: number;
  "grpc.max_connection_age_grace_ms"?: number;
  "grpc-node.max_session_memory"?: number;
  "grpc.service_config_disable_resolution"?: number;
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  [key: string]: any;

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