[Django]-MySQL ERROR 2026 – SSL connection error – Ubuntu 20.04

Ubuntu 20 has improved the security level.
The only way i could connect was allowing the tls 1 .

Edit this file:

/usr/lib/ssl/openssl.cnf

And put at the beginning of file:

openssl_conf = default_conf

And in the end of that file too:

[ default_conf ]

ssl_conf = ssl_sect

[ssl_sect]

system_default = ssl_default_sect

[ssl_default_sect]
MinProtocol = TLSv1
CipherString = DEFAULT:@SECLEVEL=1

It help me a lot: https://askubuntu.com/questions/1233186/ubuntu-20-04-how-to-set-lower-ssl-security-level

For anyone googling, you can use this flag in mysql cmd: --ssl-mode=DISABLED. I.E:

mysql -uuser -p'myPassw0rd!' -hmysql.company.com --ssl-mode=DISABLED

Add this to your mysql 5.7 server config file and then restart your mysql service

[mysqld]
tls_version=TLSv1.2

Now you should be able to connect to it using tls 1.2, which is the default in Ubuntu 20.04

For the sake of completeness, in Ubuntu 20.04 actually my.cnf and mysql.cnf are actually the same file. So editing either one will work.

$ readlink -f /etc/mysql/my.cnf
/etc/mysql/mysql.cnf

Bump mysqlclient to v2.X, which added ssl_mode option, https://github.com/PyMySQL/mysqlclient-python/blob/main/HISTORY.rst

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'yamcha',
        'USER': 'yamcha',
        'PASSWORD': 'xxxxxxxxxxxxxxx',
        'HOST': 'database.yourproject.com',
        'PORT': '3309',
        'OPTIONS': {'ssl_mode': 'DISABLED'},
    }
}

If You are using MYSQL Workbench :

Just Disable the SSL by editing the connection.

1. Go to edit Connection in connection panel

2. Select SSL in options after parameter as given in screenshot
   On connection

3. Select Use SSL : NO

4. Finally it would look like this.

On clients other than Mysql workbench also you can try disabling SSL

If you still want the upgraded security features then you can consider upgrading your mysql server to 5.7.

I encoutered same question as well. Combine the idea from above and documents.
https://dev.mysql.com/doc/refman/5.7/en/encrypted-connection-protocols-ciphers.html#encrypted-connection-supported-protocols

Here is my thought

1. Check os system openssl version and its support ssl/tls version by $ openssl version. Check the system settings /etc/ssl/openssl.cnf as well.
2. Check MySQL support TLS version by SHOW GLOBAL VARIABLES LIKE 'tls_version';
3. Check your python mysql client TLS version. For my experience I am using mysql-connector-python. Document said since 8.0.28 would not support TLS 1.1 and below. That’s why I cannot connect to MySQL. https://dev.mysql.com/doc/connector-python/en/connector-python-connectargs.html

In MySQL document, it mentioned TLS version which client could use should be the union set of host os TLS version and MySQL TLS version.
For example, your host only support TLS 1.1 / 1.2 and MySQL setting si TLS 1.0. There is no compatible TLS version for client.

Hope these tips could help.