python连接minio报错SSL routines,ssl3_get

这个错误通常是由于TLS/SSL版本或配置问题导致的。以下是几种常见的解决方法：

1. 降低TLS版本要求

如果你的Python环境较旧或MinIO服务器配置了严格的TLS要求：

from minio import Minio
import ssl

# 创建自定义SSL上下文
ssl_context = ssl.create_default_context()
ssl_context.check_hostname = False
ssl_context.verify_mode = ssl.CERT_NONE

client = Minio(
    'play.min.io',
    access_key='your-access-key',
    secret_key='your-secret-key',
    secure=True,  # 使用HTTPS
    http_client=Minio.http.HTTPClient(
        timeout=30,
        ssl_context=ssl_context
    )
)

2. 指定TLS版本

明确指定TLS版本：

import ssl
from minio import Minio
from urllib3.poolmanager import PoolManager

class SSLAdapter:
    def __init__(self):
        self.ssl_context = ssl.create_default_context()
        # 明确指定TLS版本
        self.ssl_context.minimum_version = ssl.TLSVersion.TLSv1_2
        self.ssl_context.maximum_version = ssl.TLSVersion.TLSv1_3

    def __call__(self, *args, **kwargs):
        kwargs['ssl_context'] = self.ssl_context
        return PoolManager(*args, **kwargs)

client = Minio(
    'play.min.io',
    access_key='your-access-key',
    secret_key='your-secret-key',
    secure=True,
    http_client=Minio.http.HTTPClient(
        timeout=30,
        pool_manager=SSLAdapter()
    )
)

3. 更新依赖包

确保你的Python包是最新版本：

pip install --upgrade minio urllib3 certifi

4. 使用不安全的连接（仅测试环境）

如果是在测试环境中，可以暂时使用HTTP：

client = Minio(
    'localhost:9000',
    access_key='your-access-key',
    secret_key='your-secret-key',
    secure=False  # 使用HTTP
)

5. 检查系统SSL证书

更新系统的证书包：

# Ubuntu/Debian
sudo apt-get update
sudo apt-get install ca-certificates

# CentOS/RHEL
sudo yum update ca-certificates

# 或者在Python代码中指定证书路径
import certifi
import ssl

ssl_context = ssl.create_default_context(cafile=certifi.where())

6. 完整示例代码

import ssl
from minio import Minio
from urllib3.poolmanager import PoolManager

def create_minio_client(endpoint, access_key, secret_key):
    """创建MinIO客户端连接"""

    # 方法1：自定义SSL上下文
    ssl_context = ssl.create_default_context()
    ssl_context.minimum_version = ssl.TLSVersion.TLSv1_2

    try:
        client = Minio(
            endpoint=endpoint,
            access_key=access_key,
            secret_key=secret_key,
            secure=True,
            http_client=Minio.http.HTTPClient(
                ssl_context=ssl_context,
                timeout=30,
                retries=3
            )
        )

        # 测试连接
        client.list_buckets()
        print("连接成功！")
        return client

    except Exception as e:
        print(f"连接失败: {e}")

        # 方法2：尝试不验证证书（仅测试环境）
        if "test" in endpoint or "localhost" in endpoint:
            ssl_context = ssl._create_unverified_context()
            client = Minio(
                endpoint=endpoint,
                access_key=access_key,
                secret_key=secret_key,
                secure=True,
                http_client=Minio.http.HTTPClient(
                    ssl_context=ssl_context,
                    timeout=30
                )
            )
            return client
        raise

# 使用示例
client = create_minio_client(
    endpoint='your-minio-server:9000',
    access_key='your-access-key',
    secret_key='your-secret-key'
)

7. 环境变量设置

可以设置环境变量来调整SSL行为：

# Linux/Mac
export SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
export REQUESTS_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt

# Windows
set SSL_CERT_FILE=C:\path\to\cacert.pem
set REQUESTS_CA_BUNDLE=C:\path\to\cacert.pem