MariaDB : SSL/TLS の設定2018/05/28 |
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MariaDB で SSL/TLS による暗号化通信の設定を有効にします。
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| [2] | 作成した証明書をコピーして SSL/TLS の設定をします。 |
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# 取得した証明書をコピー [root@www ~]# mkdir /var/lib/mysql/pki [root@www ~]# cp /etc/letsencrypt/live/www.srv.world/* /var/lib/mysql/pki/
[root@www ~]#
chown -R mysql. /var/lib/mysql/pki
[root@www ~]#
vi /etc/my.cnf.d/mariadb-server.cnf # [mysqld] セクション内に追記 [mysqld]
ssl-ca=/var/lib/mysql/pki/chain.pem
ssl-cert=/var/lib/mysql/pki/cert.pem ssl-key=/var/lib/mysql/pki/privkey.pem
[root@www ~]#
systemctl restart mariadb
# 設定確認 [root@www ~]# mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 11 Server version: 10.2.14-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # 以下のように表示されればOK MariaDB [(none)]> show variables like '%ssl%'; +---------------------+----------------------------------+ | Variable_name | Value | +---------------------+----------------------------------+ | have_openssl | YES | | have_ssl | YES | | ssl_ca | /var/lib/mysql/pki/chain.pem | | ssl_capath | | | ssl_cert | /var/lib/mysql/pki/cert.pem | | ssl_cipher | | | ssl_crl | | | ssl_crlpath | | | ssl_key | /var/lib/mysql/pki/privkey.pem | | version_ssl_library | OpenSSL 1.1.0h-fips 27 Mar 2018 | +---------------------+----------------------------------+ 10 rows in set (0.00 sec) |
| [3] | SSL/TLS で接続する場合は証明書を指定して接続します。 |
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[root@www ~]# mysql -u root -p --ssl-ca=/var/lib/mysql/pki/cert.pem Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 12 Server version: 10.2.14-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # 接続状況確認 MariaDB [(none)]> show status like 'ssl_cipher'; +---------------+-----------------------------+ | Variable_name | Value | +---------------+-----------------------------+ | Ssl_cipher | ECDHE-RSA-AES256-GCM-SHA384 | +---------------+-----------------------------+ 1 row in set (0.01 sec) MariaDB [(none)]> exit Bye # 非暗号化通信の場合 [root@www ~]# mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 13 Server version: 10.2.14-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # 値はブランク MariaDB [(none)]> show status like 'ssl_cipher'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | Ssl_cipher | | +---------------+-------+ 1 row in set (0.01 sec) |
| [4] | ユーザーに対して SSL/TLS アクセスを必須にする場合は、以下のように設定します。 |
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[root@www ~]# mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 14 Server version: 10.2.14-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # SSL/TLS 必須ユーザーを新規作成 MariaDB [(none)]> create user redhat identified by 'password' require ssl; Query OK, 0 rows affected (0.00 sec) # SSL/TLS 必須ユーザーは ssl_type が ANY MariaDB [(none)]> select user,host,ssl_type from mysql.user; +--------+-----------+----------+ | user | host | ssl_type | +--------+-----------+----------+ | root | localhost | | | root | 127.0.0.1 | | | root | ::1 | | | redhat | % | ANY | | fedora | % | | +--------+-----------+----------+ 5 rows in set (0.00 sec) # 既存ユーザーを SSL/TLS 必須にする MariaDB [(none)]> grant usage on *.* to 'fedora'@'%' require ssl; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> select user,host,ssl_type from mysql.user; +--------+-----------+----------+ | user | host | ssl_type | +--------+-----------+----------+ | root | localhost | | | root | 127.0.0.1 | | | root | ::1 | | | redhat | % | ANY | | fedora | % | ANY | +--------+-----------+----------+ 5 rows in set (0.00 sec) |
| [5] | 他ホストから SSL/TLS アクセスする場合は、アクセス元のホストに証明書をコピーしておいて、それを指定して接続すれば OK です。 |
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[root@node01 ~]# mysql -h www.srv.world -u fedora -p --ssl-ca=/root/cert.pem Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 15
Server version: 10.2.14-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> show status like 'ssl_cipher';
+---------------+-----------------------------+
| Variable_name | Value |
+---------------+-----------------------------+
| Ssl_cipher | ECDHE-RSA-AES256-GCM-SHA384 |
+---------------+-----------------------------+
1 row in set (0.01 sec)
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