无法连接到Cassandra(AstraDB)，用于LangChain文档中的矢量搜索示例

我试图连接到AstraDB用于我的Python矢量搜索项目（用于我的GPT聊天机器人），但我收到了一个连接错误。（我遵循LangChain Cassandra Vector store示例中的示例，并希望使用AstraDB作为我的矢量数据库。
下面是我的代码：

ASTRA_DB_CLIENT_ID = os.getenv("ASTRA_DB_CLIENT_ID")
    ASTRA_DB_APPLICATION_TOKEN = os.getenv("ASTRA_DB_APPLICATION_TOKEN")
    ASTRA_DB_SECURE_BUNDLE_PATH = (
        "/Users/devin.bost/proj/demos/ACI/secure-connect-vector-demo.zip"
    )
    cluster = Cluster(
        cloud={
            "secure_connect_bundle": ASTRA_DB_SECURE_BUNDLE_PATH,
        },
        auth_provider=PlainTextAuthProvider(
            ASTRA_DB_CLIENT_ID,
            ASTRA_DB_APPLICATION_TOKEN,
        ),
    )
    session = cluster.connect()

我已经将ASTRA_DB_CLIENT_ID设置为特定的CLIENT_ID，并对其他环境变量执行了相同的操作。
我得到这个错误：

Traceback (most recent call last):
  File "cassandra/cluster.py", line 1703, in cassandra.cluster.Cluster.connect
  File "cassandra/cluster.py", line 1690, in cassandra.cluster.Cluster.connect
  File "cassandra/cluster.py", line 3488, in cassandra.cluster.ControlConnection.connect
  File "cassandra/cluster.py", line 3533, in cassandra.cluster.ControlConnection._reconnect_internal
cassandra.cluster.NoHostAvailable: ('Unable to connect to any servers', {'1d0ba879-1c8b-49e4-bc78-90baff9e5714-westus3.db.astra.datastax.com:29042:4cc2a061-0383-4355-85cd-699b4a5af93c': AuthenticationFailed('Failed to authenticate to 1d0ba879-1c8b-49e4-bc78-90baff9e5714-westus3.db.astra.datastax.com:29042:4cc2a061-0383-4355-85cd-699b4a5af93c: Error from server: code=0100 [Bad credentials] message="We recently improved your database security. To find out more and reconnect, see https://docs.datastax.com/en/astra/docs/manage-application-tokens.html"'), '1d0ba879-1c8b-49e4-bc78-90baff9e5714-westus3.db.astra.datastax.com:29042:a856cbcf-1faa-4098-84a0-94e221931fd8': AuthenticationFailed('Failed to authenticate to 1d0ba879-1c8b-49e4-bc78-90baff9e5714-westus3.db.astra.datastax.com:29042:a856cbcf-1faa-4098-84a0-94e221931fd8: Error from server: code=0100 [Bad credentials] message="We recently improved your database security. To find out more and reconnect, see https://docs.datastax.com/en/astra/docs/manage-application-tokens.html"'), '1d0ba879-1c8b-49e4-bc78-90baff9e5714-westus3.db.astra.datastax.com:29042:6f9150b3-c81a-4fcd-a61a-499ab11f09e8': AuthenticationFailed('Failed to authenticate to 1d0ba879-1c8b-49e4-bc78-90baff9e5714-westus3.db.astra.datastax.com:29042:6f9150b3-c81a-4fcd-a61a-499ab11f09e8: Error from server: code=0100 [Bad credentials] message="We recently improved your database security. To find out more and reconnect, see https://docs.datastax.com/en/astra/docs/manage-application-tokens.html"')})
python-BaseException

我已经仔细检查了凭证，确保它们没有作为空值传递给对象，验证了安全捆绑包对于DB是正确的，安全捆绑包路径是正确的，并确保令牌配置了足够的权限。会是什么问题呢？

问题是，当您将ASTRA_DB_CLIENT_ID从“token”更改为实际的CLIENT_ID时，实际上违反了示例。
如果你想使用token而不是客户端ID和secret，你需要将该参数设置为“token”，就像这样：

auth_provider=PlainTextAuthProvider(
        "token",
        ASTRA_DB_APPLICATION_TOKEN,
),

一般来说，每当凭据不正确时，都可能引发异常。
或者，在建立连接时，您可以使用客户端ID和客户端密码。下面是使用这种方法的更完整的示例（使用您的代码）：

ASTRA_DB_CLIENT_ID = os.getenv("ASTRA_DB_CLIENT_ID")
ASTRA_DB_APPLICATION_TOKEN = os.getenv("ASTRA_DB_APPLICATION_TOKEN")
ASTRA_DB_SECURE_BUNDLE_PATH = (
    "/Users/devin.bost/proj/demos/ACI/secure-connect-vector-demo.zip"
)
cluster = Cluster(
    cloud={
        "secure_connect_bundle": ASTRA_DB_SECURE_BUNDLE_PATH,
    },
    auth_provider=PlainTextAuthProvider(
        ASTRA_DB_CLIENT_ID,
        ASTRA_DB_SECRET,
    ),
)
session = cluster.connect()

从官方的AstraDB门户网站上看到这个例子，相关部分用红色表示：

展开查看全部

无法连接到Cassandra(AstraDB)，用于LangChain文档中的矢量搜索示例

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