mysql安裝在centos7報錯ERROR 1045 (28000): Access denied for user 'root'@'localhost' (u...

轉：https://blog.csdn.net/kuluzs/article/details/51924086

 

 

 

mysql版本：5.7.13

首次在centos下安裝mysql，客戶端鏈接mysql時報錯：

 

[root@localhost opt]# /usr/bin/mysql -u root ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

【解決】：
一、找到密碼

 

[root@localhost opt]# cat /var/log/mysqld.log | grep password 2016-07-16T05:01:47.771362Z 1 [Note] A temporary password is generated for root@localhost: q.)aq!YaH6y- 2016-07-16T05:02:32.000199Z 2 [Note] Access denied for user 'root'@'localhost' (using password: NO) 2016-07-16T05:02:39.063852Z 3 [Note] Access denied for user 'root'@'localhost' (using password: NO)

二、從新鏈接mysql：

 

[root@zzs171 opt]# /usr/bin/mysql -u root -p Enter password: 

輸入上面找到的密碼，便可進入mysql客戶端鏈接。

三、修改mysql的root的密碼：
進入mysql客戶端以後，show databases; 會提醒先修改密碼：

 

mysql> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

設置密碼，如下兩種方式都可：

 

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('Mysqlpassw0rd.'); alter user 'root'@'localhost' identified by 'Mysqlpassw0rd.';

 

OK，至此設置成功。注意mysql有密碼複雜度的限制。密碼太簡單會提示：

mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123'); ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

【其餘補充】
網上還有幾種方案，可是都不行。例如：

 

方案一：
mysqladmin -u root password 123456，結果提示錯誤：error: 'Access denied for user 'root'@'localhost' (using password: NO)'

方案二：
用mysqld_safe skip-grant-tables進入mysql，而後sql語句修改root密碼，仍是提示錯誤：-bash: mysqld_safe: comm