mysql root密碼忘記mysql
一、啓動時加上下面參數:git
--skip-grant-tablessql
/etc/rc.d/init.d/mysqld start --skip-grant-tables數據庫
二、操做my.conf,增長下面參數ide
[root@host]# cat /etc/my.cnf | grep -v '^$' | grep -v "^#"gitlab
[mysqld]spa
skip-grant-tablesip
重啓mysql服務就能夠登陸mysql了。string
查看mysql的用戶受權:it
mysql> select user,host from mysql.user;
+--------+------+
| user | host |
+--------+------+
| gitlab | % |
| root | % |
+--------+------+
2 rows in set (0.00 sec)
刪除空用戶:
delete from mysq.user where user='';
刪除test庫:
drop database test;
修改mysql密碼報錯:
mysql> update user set password=password(‘redhat’) where user='root';
ERROR 1054 (42S22): Unknown column 'password' in 'field list'
正確改密碼語句:
mysql> update user set authentication_string=password('redhat') where user='root';
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 1
報錯緣由:
mysql> select version();
+------------+
| version() |
+------------+
| 5.7.24-log |
+------------+
1 row in set (0.00 sec)
想要查看數據庫中用戶信息,結果報錯沒有password這個字段了。原來在mysql5.7及以上的版本里面,password這個字段已經被authentication_string取代。
mysql> desc user;