Mysql无密码登录、有密码被拒绝

Question

我刚刚构建了一个新的 mysql 实例，但无法与我创建的 2 个用户连接。创建后，我连接(没有密码，因为这是第一次登录):

mysql -uroot

连接后我就跑了

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('Password1');
GRANT ALL PRIVILEGES ON *.* TO 'generic_user'@'%' IDENTIFIED BY 'Password2';
GRANT ALL PRIVILEGES ON *.* TO 'db_admin'@'%' IDENTIFIED BY 'Password3';

保护我的 root 用户并尝试为我的 Web 应用程序创建用户并对其进行管理。使用 root 和 Password1(不是实际密码)连接工作正常，但 generic_user 无法使用 Password2 连接<强>如果我使用密码。如果我没有密码和 generic_user，我就被授予访问权限。

例如

mysql -ugeneric_user
Welcome to the MySQL monitor. Commands end with ; or \g.

诗歌安全尝试:

mysql -ugeneric_user -p
Enter password:
ERROR 1045 (28000): Access denied for user 'generic_user'@'localhost' (using password: YES)

我正在从 GRANT 命令复制并粘贴密码，以便我知道它是正确的。

我看到 my.cnf 包含凭据，但我的 my.cnf 也没有:

# Percona Server template configuration

[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
default-time-zone="America/New_York"
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

...更新...

经过更多的摆弄，我想我正在以不同的用户身份进行连接。

我跑了:

TRUNCATE TABLE mysql.proxies_priv;
FLUSH PRIVILEGES;

在我发现 user() 和 current_user() 将我作为 root 返回之后。

mysql> SELECT USER(),CURRENT_USER();
+----------------+----------------+
| USER()         | CURRENT_USER() |
+----------------+----------------+
| root@localhost | root@localhost |
+----------------+----------------+
1 row in set (0.00 sec)

现在我得到:

+------------------------+----------------+
| USER()                 | CURRENT_USER() |
+------------------------+----------------+
| generic_user@localhost | @localhost     |
+------------------------+----------------+

Answer 1

答案是设置了一个通用用户帐户。我遵循了这个答案，https://dba.stackexchange.com/questions/10852/mysql-error-access-denied-for-user-alocalhost-using-password-yes/10897#10897 ，还有一些额外的部分。

验证我有一个通用帐户后

SELECT user,host,password FROM mysql.user WHERE user='' AND host='localhost';

我删除了，但仍然可以访问，因为我没有刷新权限，所以完整的命令应该是:

delete FROM  mysql.user WHERE user='' AND host='localhost';

然后在外壳中

mysqladmin flush-privileges -uroot -p
mysqladmin reload -uroot -p
service mysql restart

我认为没有必要重新启动。