查看初始密碼

• grep 'temporary password' /var/log/mysqld.log
• cat /root/.mysql_secret
  mysql密碼找回

密碼重置

vi /etc/my.cnf

在[mysqld]下加上 skip-grant-tables，如：

[mysqld] 
datadir=/var/lib/mysql 
socket=/var/lib/mysql/mysql.sock 
skip-grant-tables 

• 重啟mysql
  service mysqld restart

• 登陸mysql后就可以修改密碼了
  mysql -u root

  update mysql.user set authentication_string=PASSWORD('123456') where User='root';
flush privileges;

參考文獻：https://www.jianshu.com/p/0a40cbaa79a0