MySQL 5.7をインストールしたら、rootのパスワードがわからず苦労したので、その解決策をメモ。
rootの初期パスワード確認
MySQL 5.7からrootにランダムにパスワードが初期設定されるようになった。
rootの初期パスワードは、/root/.mysql_secretファイル内に書き込まれている。
MySQLの初期設定
次のように初期化スクリプトを起動して、rootパスワードの設定をはじめとした各種初期設定を行う。
# sudo mysql_secure_installation Securing the MySQL server deployment. Connecting to MySQL server using password in '/root/.mysql_secret' 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: n Using existing password for root. Change the password for root ? ((Press y|Y for Yes, any other key for No) : y New password: 新しいパスワード Re-enter new password: 新しいパスワードを再入力 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) : 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) : 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) : 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) : y Success. All done! #
rootのパスワード設定
mysql_secure_installationから設定しただけだと、mysqlに標準入力からスクリプトを読み込ませたときに次のようなエラーが出て実行されない。
Please use --connect-expired-password option or invoke mysql in interactive mode.
これを回避するためには、mysql内でset命令を使ってパスワードを設定し直しておく必要がある。
# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 15
Server version: 5.7.10
Copyright (c) 2000, 2015, 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> set password=password('新しいパスワード');
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> quit
Bye
#
次にインストールするときまでには忘れている自信あり。
