mysql錯誤ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'MAC'解決辦法mysql
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 【 備註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'; 【備註:下一次會用newpassword密碼登陸數據庫】 MariaDB [mysql]> FLUSH PRIVILEGES;//記得要這句話,不然若是關閉先前的終端,又會出現原來的錯誤 MariaDB [mysql]> \q ---------------------------------------------------------------------------- 個人實操測試 [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 【個人無密碼】 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 【發現以前無密碼沒法登錄了】 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) [root@nessus ~]# [root@nessus ~]# mysql -uroot -pnewpassword 【得用newpassword密碼登陸數據庫】 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)]>