MariaDB 10.11 : SSL/TLS Setting2024/02/02

	Configure SSL/TLS Setting on MariaDB.
[1]	Get SSL Certificate, or Create self-signed Certificate. It uses self signed Certificate on this example.
[2]	Configure MariaDB.

# copy certificates

root@www:~ #

mkdir /var/db/mysql/pki

root@www:~ #

cp /usr/local/etc/ssl/server.* /var/db/mysql/pki/

root@www:~ #

chown -R mysql:mysql /var/db/mysql/pki

root@www:~ #

vi /usr/local/etc/mysql/conf.d/server.cnf

# line 25 : add to specify certificates you set

ssl-cert = /var/db/mysql/pki/server.crt
ssl-key = /var/db/mysql/pki/server.key

root@www:~ #

service mysql-server restart

# verify settings

root@www:~ #

mysql

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 3
Server version: 10.11.6-MariaDB FreeBSD Ports

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# OK if status is like follows
root@localhost [(none)]> show variables like '%ssl%'; 
+---------------------+------------------------------+
| Variable_name       | Value                        |
+---------------------+------------------------------+
| have_openssl        | YES                          |
| have_ssl            | YES                          |
| ssl_ca              |                              |
| ssl_capath          |                              |
| ssl_cert            | /var/db/mysql/pki/server.crt |
| ssl_cipher          |                              |
| ssl_crl             |                              |
| ssl_crlpath         |                              |
| ssl_key             | /var/db/mysql/pki/server.key |
| version_ssl_library | OpenSSL 3.0.12 24 Oct 2023   |
+---------------------+------------------------------+
10 rows in set (0.001 sec)

[3]	To connect with SSL/TLS from Clients, connect with specifying [ssl] option.

root@www:~ #

mysql --ssl

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 4
Server version: 10.11.6-MariaDB FreeBSD Ports

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# show status
root@localhost [(none)]> show status like 'ssl_cipher'; 
+---------------+------------------------+
| Variable_name | Value                  |
+---------------+------------------------+
| Ssl_cipher    | TLS_AES_256_GCM_SHA384 |
+---------------+------------------------+
1 row in set (0.000 sec)

root@localhost [(none)]> exit 
Bye

# on no SSL/TLS connection

root@www:~ #

mysql --skip-ssl

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 5
Server version: 10.11.6-MariaDB FreeBSD Ports

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# value is empty
root@localhost [(none)]> show status like 'ssl_cipher'; 
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| Ssl_cipher    |       |
+---------------+-------+
1 row in set (0.000 sec)

[4]	To force require users to connect with SSL/TLS, set like follows.

root@www:~ #

mysql

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 8
Server version: 10.11.6-MariaDB FreeBSD Ports

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# create a user who is required SSL/TLS
root@localhost [(none)]> create user netbsd identified by 'password' require ssl; 
Query OK, 0 rows affected (0.00 sec)

# SSL/TLS required users are set [ssl_type] = [ANY]
root@localhost [(none)]> select user,host,ssl_type from mysql.user; 
+-------------+-----------+----------+
| User        | Host      | ssl_type |
+-------------+-----------+----------+
| mariadb.sys | localhost |          |
| root        | localhost |          |
| mysql       | localhost |          |
| PUBLIC      |           |          |
| freebsd     | %         |          |
| netbsd      | %         | ANY      |
+-------------+-----------+----------+
6 rows in set (0.001 sec)

# set SSL/TLS required to an existing user
root@localhost [(none)]> grant usage on *.* to 'freebsd'@'%' require ssl; 
Query OK, 0 rows affected (0.00 sec)

root@localhost [(none)]> select user,host,ssl_type from mysql.user; 
+-------------+-----------+----------+
| User        | Host      | ssl_type |
+-------------+-----------+----------+
| mariadb.sys | localhost |          |
| root        | localhost |          |
| mysql       | localhost |          |
| PUBLIC      |           |          |
| freebsd     | %         | ANY      |
| netbsd      | %         | ANY      |
+-------------+-----------+----------+
6 rows in set (0.001 sec)

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