peewee mysql SSL：CERTIFICATE_VERIFY_FAILED

Question

python 3.4.3，pymysql 0.6.7和0.7.1，mysql 5.5.23和5.5.4x无法通过ssl选项连接到mysql。 使用mysql workbench和mysql-client，安全连接可以正常工作。 我已经在debian和Windows的两个mysql服务器上对其进行了测试

这是代码和解释

制作证书

openssl genrsa 2048 > ca-key.pem; \
openssl req -sha1 -new -x509 -nodes -days 3650 -key ca-key.pem > ca-cert.pem; \
openssl req -sha1 -newkey rsa:2048 -days 730 -nodes -keyout server-key.pem > server-req.pem; \
openssl x509 -sha1 -req -in server-req.pem -days 730  -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 > server-cert.pem; \
openssl rsa -in server-key.pem -out server-key.pem; \
openssl req -sha1 -newkey rsa:2048 -days 730 -nodes -keyout client-key.pem > client-req.pem; \
openssl x509 -sha1 -req -in client-req.pem -days 730 -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 > client-cert.pem; \
openssl rsa -in client-key.pem -out client-key.pem;

用户创建

CREATE DATABASE dbname;
GRANT ALL PRIVILEGES ON dbname.* TO 'u1'@'%' IDENTIFIED BY '12345' REQUIRE SSL;
FLUSH PRIVILEGES;

码

from __future__ import print_function
import pymysql

#conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='', db='mysql')
conn = pymysql.connect(host='localhost', port=3306, user='u1', passwd='12345', db='dbname', ssl = {'key': 'ssl/client-key.pem', 'cert': 'ssl/client-cert.pem', 'ca': 'ssl/ca-cert.pem'})

cur = conn.cursor()
#cur.execute("SELECT Host,User FROM user")
cur.execute("SHOW TABLES")

print(cur.description)
print()
for row in cur:
    print(row)
cur.close()
conn.close()

错误

Traceback (most recent call last):
  File "C:\Python34\lib\site-packages\pymysql\connections.py", line 851, in connect
    self._request_authentication()
  File "C:\Python34\lib\site-packages\pymysql\connections.py", line 1017, in _request_authentication
    ca_certs=self.ca)
  File "C:\Python34\lib\ssl.py", line 890, in wrap_socket
    ciphers=ciphers)
  File "C:\Python34\lib\ssl.py", line 580, in __init__
    self.do_handshake()
  File "C:\Python34\lib\ssl.py", line 807, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/User/Py/prjct/test.py", line 24, in <module>
    conn = pymysql.connect(host='localhost', port=3306, user='u1', passwd='12345', db='dbname', ssl = {'key': 'ssl/client-key.pem', 'cert': 'ssl/client-cert.pem', 'ca': 'ssl/ca-cert.pem'})
  File "C:\Python34\lib\site-packages\pymysql\__init__.py", line 88, in Connect
    return Connection(*args, **kwargs)
  File "C:\Python34\lib\site-packages\pymysql\connections.py", line 657, in __init__
    self.connect()
  File "C:\Python34\lib\site-packages\pymysql\connections.py", line 882, in connect
    raise exc
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on 'localhost' ([SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600))")

更新：我错过了说明的这一部分：

```
Whatever method you use to generate the certificate and key files, the Common Name value used for the server and client certificates/keys must each differ from the Common Name value used for the CA certificate. Otherwise, the certificate and key files will not work for servers compiled using OpenSSL.
```

当OpenSSL提示您输入每个证书的通用名称时，请使用不同的名称。

但是然后它会帮助并引发新的错误：首先-dhkey不足，我将测试mysql服务器更新到最后5.7.11，它会帮助并引发新的错误，即公用名与localhost不匹配，并且我已使用新的公用名重新生成了证书localhost

并且它再次显示我错误-（[SSL：CERTIFICATE_VERIFY_FAILED]证书验证失败（_ssl.c：600））

Answer 1

尝试：

conn = pymysql.connect（host ='localhost'，port = 3306，user ='u1'，passwd ='12345'，db ='dbname'，ssl = {'ssl'：{'key'：'ssl / client -key.pem”，“ cert”：“ ssl / client-cert.pem”，“ ca”：“ ssl / ca-cert.pem”}}）

有同样的问题，它对我有用。

Answer 2

这可能无法直接回答您的问题，但是我相信使用mysql-python存在一些与版本冲突问题相关的问题。 我使用以下Anaconda / Pip版本设法通过peewee（使用ssl）进行连接：

python                    2.7.15               h9bab390_6
pymysql                   0.9.3                    py27_0 
mysql-connector-c         6.1.11               h597af5e_0  
mysql-connector-python    8.0.12           py27haf6c83e_0
peewee                    3.8.2                    pypi_0    pypi

为了完整起见，我通过以下方式使用SSL连接到Google Cloud实例：

import pewee as pw
from os.path import expanduser

home = expanduser("~")

perms = {'key': home+'/ssl/client-key.pem', 
         'cert': home+'/ssl/client-cert.pem', 
         'ca': home+'/ssl/server-ca.pem',
         'check_hostname': False}

mysql_db = pw.MySQLDatabase(database=os.environ['GCP_DBNAME'],
                            host=os.environ['GCP_HOST'],
                            user=os.environ['GCP_USER'],
                            passwd=os.environ['GCP_PASS'],
                            ssl=perms)

希望这对其他有相同错误的人有所帮助。 更新的版本似乎也可以在Python 3.5中使用。 我在Ubuntu 16.04上。