解決Mysql忘記密碼：

1、首先停止正在運(yùn)行的MySQL進(jìn)程：[root@cml5?~]#?systemctl?stop?mysqld

2、以安全模式啟動(dòng)MySQL：[root@cml5?~]#?/usr/local/mysql/bin/mysqld_safe--skip-grant-tables?&

##或者在my.cnf文件下添加，執(zhí)行完后就刪除掉

skip-grant-tables[root@cml5?~]#?cat?/etc/my.cnf

[mysqld]

datadir=/usr/local/mysql/mydata

socket=/usr/local/mysql/mysql.sock

log_bin=/usr/local/mysql/mydata/mysql-bin

server-id=1

skip-grant-tables

然后重啟mysql

進(jìn)入mysql(免密碼)

然后修改密碼；

3、完成以后就可以免密進(jìn)入MySQL了，然后修改密碼：

(3)運(yùn)行 /usr/local/mysql/bin/mysql -u root -p 按Enter鍵進(jìn)入[root@cml5?~]#??/usr/local/mysql/bin/mysql?-u?root?-p

mysql>?use?mysql;

mysql>?update?user?set?password=password('123')?where?user='root'?and?host='localhost';

##假如是mysql5.7之后的就password字段改成了authentication_string：

mysql>?update?user?set?authentication_string=password('redhat')?where?user='root'and?host='localhost';

mysql5.7以上版本-->????UPDATE?user?SET?authentication_string=PASSWORD("root")?WHERE?User="root";

mysql>?flush?privileges;

mysql>?ALTER?user?'root'@'localhost'?identified?by?'redhat';

Query?OK,?0?rows?affected?(0.00?sec)

mysql>

mysql>?flush?privileges;

Query?OK,?0?rows?affected?(0.00?sec)

mysql>?show?databases;

+--------------------+

|?Database???????????|

+--------------------+

|?information_schema?|

|?mysql??????????????|

|?performance_schema?|

|?sys????????????????|

+--------------------+

4?rows?in?set?(0.00?sec)

ERROR?1820?(HY000):?You?must?reset?your?password?using?ALTER?USER?statement?before?executing?this?statement.

今天在MySql5.6操作時(shí)報(bào)錯(cuò)：You?must?SET?PASSWORD?before?executing?this?statement解決方法，需要的朋友可以參考下

ERROR?1820?(HY000):?You?must?SET?PASSWORD?before?executing?this?statement

mysql>?create?database?yan1;

ERROR?1820?(HY000):?You?must?SET?PASSWORD?before?executing?this?statement

mysql>?SET?PASSWORD?=?PASSWORD('123456');

Query?OK,?0?rows?affected?(0.03?sec)

總結(jié)

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