安裝後不知道密碼。

# systemctl stop mysqld\\
# rm -Rf /var/lib/mysql/*\\
# mysql_install_db\\
# systemctl start mysqld\\
# mysql -u root \\
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'root-password';\\
mysql> exit\\

# vi ~/.my.cnf
<code>
[client]
user            = root
password        = root-password
port            = 3306
socket          = /var/lib/mysql/mysql.sock
</code>