現象：提示禁止訪問
limin@liminpc:~$ mysql -uroot -p
**Enter password:
ERROR 1045 (28000): Access denied for user ‘root’@’localhost’ (using password: YES)**
解決方法：
1)安全模式啓動
limin@liminpc:/etc/mysql/conf.d$ cd /usr/local/mysql/bin
limin@liminpc:/usr/local/mysql/bin$ sudo ./mysqld_safe –user=mysql –skip-grant-tables –skip-networking &
2)重新登陸，無需輸入密碼
limin@liminpc:/usr/local/mysql/bin$ mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.25-enterprise-commercial-advanced MySQL Enterprise Server - Advanced Edition (Commercial)
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.
3)修改密碼
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
mysql> update user set Password=PASSWORD(‘password’) where user=’root’;
4)重啓msyql
sudo /etc/init.d/msyql restart