連接至 Milvus 伺服器

本主題描述如何建立用戶端與 Milvus 伺服器的連線，並設定常用的連線選項。

先決條件

• 已安裝您語言的 SDK。詳情請參閱Python SDK、Java SDK、Go SDK 或Nodejs SDK。

• Milvus 伺服器位址 (本機預設：http://localhost:19530 ，proxy 埠19530)。

• 如果啟用了驗證，請提供令牌或使用者名稱 + 密碼。令牌可以是username:password (例如：root:Milvus)。如需詳細資訊，請參閱驗證使用者存取及建立使用者與角色。

透過 URI 連線 (停用驗證)

使用 Milvus 伺服器位址 (例如http://localhost:19530) 建立連線。

from pymilvus import MilvusClient

client = MilvusClient("http://localhost:19530")

import io.milvus.v2.client.ConnectConfig;
import io.milvus.v2.client.MilvusClientV2;

ConnectConfig config = ConnectConfig.builder()
        .uri("http://localhost:19530")
        .build();
client = new MilvusClientV2(config);

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

const client = new MilvusClient({
   address: 'http://localhost:19530'
});

import "github.com/milvus-io/milvus/client/v2/milvusclient"

c, err := milvusclient.New(ctx, &milvusclient.ClientConfig{
    Address: "localhost:19530",
})

# The RESTful API is stateless, so there is no persistent connection.
# Each request hits the server directly; the /collections/list endpoint
# doubles as a health check when you need to verify reachability.
export HOST="localhost:19530"

curl -X POST "http://${HOST}/v2/vectordb/collections/list" \
    -H "Content-Type: application/json" \
    -d '{}'

使用憑證連接（啟用驗證）

提供"username:password" 形式的憑證，或分別提供user 和password 。預設的內建管理員為root:Milvus (生產時請變更)。

from pymilvus import MilvusClient

# Token form
client = MilvusClient(
    uri="http://localhost:19530",
    token="root:Milvus",
)

# Or explicit user/password
client = MilvusClient(
    uri="http://localhost:19530",
    user="root",
    password="Milvus",
)

import io.milvus.v2.client.ConnectConfig;
import io.milvus.v2.client.MilvusClientV2;

ConnectConfig config = ConnectConfig.builder()
        .uri("http://localhost:19530")
        .username("root")
        .password("Milvus")
        .build();
client = new MilvusClientV2(config);

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

const client = new MilvusClient({
   address: 'http://localhost:19530',
   username: 'root',
   password: 'Milvus'
});

import "github.com/milvus-io/milvus/client/v2/milvusclient"

c, err := milvusclient.New(ctx, &milvusclient.ClientConfig{
    Address: "localhost:19530",
    Username: "root",
    Password: "Milvus",
})

export HOST="localhost:19530"
export TOKEN="root:Milvus"

curl -X POST "http://${HOST}/v2/vectordb/collections/list" \
    -H "Authorization: Bearer ${TOKEN}" \
    -H "Content-Type: application/json" \
    -d '{}'

設定逾時

設定用戶端連線的預設逾時時間：

from pymilvus import MilvusClient

client = MilvusClient(uri="http://localhost:19530", timeout=1000) # If not set, the timeout defaults to 10s

import io.milvus.v2.client.ConnectConfig;
import io.milvus.v2.client.MilvusClientV2;

ConnectConfig config = ConnectConfig.builder()
        .uri("http://localhost:19530")
        .rpcDeadlineMs(1000)
        .build();
client = new MilvusClientV2(config);

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

const client = new MilvusClient({
   address: 'http://localhost:19530',
   username: 'root',
   password: 'Milvus',
   timeout: 1000 // ms
});
// await client.listCollections({ timeout: 2000})

import "github.com/milvus-io/milvus/client/v2/milvusclient"

ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
c, err := milvusclient.New(ctx, &milvusclient.ClientConfig{
    Address: "localhost:19530",
})

export HOST="localhost:19530"
export TOKEN="root:Milvus"

# Request-Timeout is applied per-request (unit: seconds). --max-time
# caps the total curl wall-clock so the client gives up even if the
# server never responds.
curl -X POST "http://${HOST}/v2/vectordb/collections/list" \
    -H "Authorization: Bearer ${TOKEN}" \
    -H "Content-Type: application/json" \
    -H "Request-Timeout: 5" \
    --max-time 7 \
    -d '{}'

連接至特定資料庫

在建构过程中使用db_name 选择目标数据库。您也可以稍后使用using_database() 进行切换。

from pymilvus import MilvusClient

# Set the database when creating the client
client = MilvusClient(
    uri="http://localhost:19530",
    token="root:Milvus",
    db_name="analytics",
)

# (Optional) Switch the active database later
# client.using_database("reports")

import io.milvus.v2.client.ConnectConfig;
import io.milvus.v2.client.MilvusClientV2;

ConnectConfig config = ConnectConfig.builder()
        .uri("http://localhost:19530")
        .username("root")
        .password("Milvus")
        .dbName("analytics")
        .build();
client = new MilvusClientV2(config);

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

const client = new MilvusClient({
   address: 'http://localhost:19530',
   username: 'root',
   password: 'Milvus',
   database: 'analytics'
});
// (Optional) Switch the active database later
// await milvusClient.useDatabase({
//   db_name: 'reports',
//});

import "github.com/milvus-io/milvus/client/v2/milvusclient"

c, err := milvusclient.New(ctx, &milvusclient.ClientConfig{
    Address: "localhost:19530",
    DBName:  "analytics",
    APIKey:  "root:Milvus",
})
// (Optional) switch the active database later with:
err = c.UseDatabase(ctx, milvusclient.NewUseDatabaseOption("reports"))

export HOST="localhost:19530"
export TOKEN="root:Milvus"

# Target a specific database by setting "dbName" in the request body.
# The RESTful API is stateless, so include "dbName" on every request
# that should run against a non-default database.
curl -X POST "http://${HOST}/v2/vectordb/collections/list" \
    -H "Authorization: Bearer ${TOKEN}" \
    -H "Content-Type: application/json" \
    -d '{
      "dbName": "analytics"
    }'

下一步

• 建立集合

• 插入實體

• 基本向量搜尋