1.在root用户下,停止mysql
service mysqld stop
2.vi /etc/my.cnf
在[mysqld]的段中加上一句skip-grant-tables
[mysqld]
skip-grant-tables
shift+z+z;保存退出
3.重新启动mysql
systemctl start mysqld
3.登录修改mysql 的密码
[root@python2 hadoop]# mysql -uroot -p
Enter password:
一直敲回车
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.21 MySQL Community Server (GPL)
看到welcome登录成功
5.FLUSH PRIVILEGES; 执行这条命令刷新
6.授权
mysql> GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%'IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.01 sec)
6:修改密码
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.00 sec)
7.退出 quit;
8. 到vi /etc/my.cnf 删除skip-grant-tables
7.登录mysql 成功修改密码并登录