重置忘记的mysql root密码

步骤

1. 停止mysql服务

2. 进入mysql安全模式
   mysqld_safe –skip-grant-tables

3. mysql -u root -p

4. use mysql;

5. describe user;

6. update user set authentication_string= password(‘123456’) where user=’root’;

7. flush privileges;

8. 重启mysql

题外话：mac为当前用户配置mysql环境变量
vim ~/.bash_profile
export PATH=$PATH:/usr/local/mysql-5.7.17-macos10.12-x86_64/bin
source .bash_profile