ブログ - mysql_secure_installationを実行する
インストール時にmysql_secure_installationを実行と記載されている．MySQLのインストールしてデフォルトのままだとセキュリティが弱い部分を強化する為につくられたものかな．
いつものようにパスを確認．
実行する．
VALIDATE PASSWORD pluginをセットアップするかと訊かれているのでyesで答える．
パスワードのポリシーを選択．最低でも8文字以上の0を選ぶ．ここは本来はSTRONGの2を選ぶべき．
設定するパスワードを入力する．
同じものを設定．
最小限の8文字パスワードを設定したら，強さが50点と言われたけれど，今回はこれで設定する．
インストール時に匿名ユーザが作られているが，それを消しても良いか？と尋ねられているので，いらないので消す．
成功と出た．
rootユーザでの接続をリモートから許可しない設定するか確認．
localhostからだけとする．
testという名前のデータベースが作成されているが，これを削除して良いかと訊かれている．
いらないので削除する．
成功した．
権限設定をリロードして良いか訊かれているの．
問題なく完了しました．
mysqlモニターで接続して見る．
ロケーションを設定してないのでlocalhostじゃないので接続できなくなっている．
次は，-pでパスワード入力を行わせる．
接続できた．データベースを確認する．
testというデータベースは作成されてない．
次にユーザを確認．
localhostからのみ接続できるようになっている．接続を終了する．
いつものようにパスを確認．
zeus:~ server$ 🆑which mysql_secure_installation
/usr/local/bin/mysql_secure_installation🈁
zeus:~ server$
zeus:~ server$ 🆑mysql_secure_installation
Securing the MySQL server deployment.
Connecting to MySQL using a blank password.
VALIDATE PASSWORD PLUGIN can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD plugin?
Press y|Y for Yes, any other key for No:
Press y|Y for Yes, any other key for No: 🆑y
There are three levels of password validation policy:
LOW Length >= 8
MEDIUM Length >= 8, numeric, mixed case, and special characters
STRONG Length >= 8, numeric, mixed case, special characters and dictionary file
Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG:
Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 🆑0
Please set the password for root here.
New password:🆑
Re-enter new password:🆑
Estimated strength of the password: 50
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) :
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : 🆑y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
Remove anonymous users? (Press y|Y for Yes, any other key for No) :
Remove anonymous users? (Press y|Y for Yes, any other key for No) : 🆑y
Success.
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
Disallow root login remotely? (Press y|Y for Yes, any other key for No) :
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : 🆑y
Success.🈁
By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.
Remove test database and access to it? (Press y|Y for Yes, any other key for No) :
いらないので削除する．
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : 🆑y
- Dropping test database...
Success.🈁
- Removing privileges on test database...
Success.🈁
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) :
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : 🆑y
Success.
All done!
zeus:~ server$
mysqlモニターで接続して見る．
zeus:~ server$ 🆑mysql -uroot
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
zeus:~ server$
次は，-pでパスワード入力を行わせる．
zeus:~ server$ 🆑mysql -uroot -p
Enter password:🆑
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 5.7.18 Homebrew
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
mysql> 🆑show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
mysql>
次にユーザを確認．
mysql> 🆑select host,user from user;
+-----------+-----------+
| host | user |
+-----------+-----------+
| 127.0.0.1 | root |
| ::1 | root |
| localhost | mysql.sys |
| localhost | root |
+-----------+-----------+
4 rows in set (0.00 sec)
mysql>
mysql> quit
Bye
zeus:~ server$
