mysql錯誤ERROR 1044 (42000): Access denied for user

發布時間：2020-04-03 14:30:18

來源：51CTO

閱讀：1572

作者：老肖的博客

mysql錯誤ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'MAC'解決辦法MariaDB?[(none)]>?create?database?MAC;

ERROR?1044?(42000):?Access?denied?for?user?''@'localhost'?to?database?'MAC'

MariaDB?[(none)]>

方法一：

1.關閉mysql

#?service?mysqld?stop?【?備注centos7是systemctl?stop?mariadb】

2.屏蔽權限

#?mysqld_safe?--skip-grant-table

屏幕出現：?Starting?demo?from?.....

3.新開起一個終端輸入

#mysql?-uroot?-pxxxxxx

MariaDB?[(none)]>?use?mysql;

MariaDB?[mysql]>

MariaDB?[mysql]>?UPDATE?user?SET?Password=PASSWORD('newpassword')?where?USER='root';?????【備注：下一次會用newpassword密碼登錄數據庫】

MariaDB?[mysql]>??FLUSH?PRIVILEGES;//記得要這句話，否則如果關閉先前的終端，又會出現原來的錯誤

MariaDB?[mysql]>??\q

----------------------------------------------------------------------------

我的實操測試

[root@nessus?~]#?systemctl?stop?mysqld

Failed?to?stop?mysqld.service:?Unit?mysqld.service?not?loaded.

[root@nessus?~]#?systemctl?stop?mariadb

[root@nessus?~]#

[root@nessus?~]#

[root@nessus?~]#?mysqld_safe?--skip-grant-table

191030?11:11:24?mysqld_safe?Logging?to?'/var/log/mariadb/mariadb.log'.

191030?11:11:24?mysqld_safe?Starting?mysqld?daemon?with?databases?from?/var/lib/mysql

新開起一個終端輸入

[root@nessus?~]#?mysql?-uroot??【我的無密碼】

MariaDB?[(none)]>?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

Database?changed

MariaDB?[mysql]>?UPDATE?user?SET?Password=PASSWORD('newpassword')?where?USER='root';

Query?OK,?4?rows?affected?(0.01?sec)

Rows?matched:?4??Changed:?4??Warnings:?0

MariaDB?[mysql]>

MariaDB?[mysql]>

MariaDB?[mysql]>?FLUSH?PRIVILEGES;

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

MariaDB?[mysql]>?\q

Bye

[root@nessus?~]#?mysql?-uroot??【發現之前無密碼無法登陸了】

ERROR?1045?(28000):?Access?denied?for?user?'root'@'localhost'?(using?password:?NO)

[root@nessus?~]#

[root@nessus?~]#?mysql?-uroot?-pnewpassword???【得用newpassword密碼登錄數據庫】

Welcome?to?the?MariaDB?monitor.??Commands?end?with?;?or?\g.

Your?MariaDB?connection?id?is?5

Server?version:?5.5.60-MariaDB?MariaDB?Server

Copyright?(c)?2000,?2018,?Oracle,?MariaDB?Corporation?Ab?and?others.

Type?'help;'?or?'\h'?for?help.?Type?'\c'?to?clear?the?current?input?statement.

MariaDB?[(none)]>

MariaDB?[(none)]>

MariaDB?[(none)]>

MariaDB?[(none)]>?create?database?MAC;

Query?OK,?1?row?affected?(0.00?sec)

MariaDB?[(none)]>

MariaDB?[(none)]>

MariaDB?[(none)]>

MariaDB?[(none)]>

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