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这个是执行脚本一键部署MySQL 8.0的时候出现的报错信息:一键安装8.0版本脚本文件
如果在登录MySQL出现这个的报错信息:ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)。
这两个错误属于同一类,即密码错误。
解决思路:免密登陆进行密码修改,再用修改后的密码。
1、首先先关闭mysql。
service mysqld stop
2、查看mysql的状态
service mysqld status
3、设置使用命令跳过输入密码的过程
mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
4、另开一个窗口--登录MySQL---不要输入密码,直接回车。
mysqld -uroot -p
5、使用一下MySQL数据库--指定数据库
use mysqld;
6、查看mysql数据库中user表,用户等于root的用户,有一下展示就可以
select 'user' from user where user='root';
7、为user=root的用户设置密码为123456
update user set password=PASSWORD('123456') where user='root';
8、刷新使之生效,并退出。
flush privileges;
exit;
9.重启mysqld
service mysqld restart
10、查看mysql状态
service mysqld status
11、正常登录
mysql -u root -p 123456
这个脚本存在的问题可能有:1.密码过于简单,MySQL可能不允许设置过于简单的密码。
注意:update user set password=PASSWORD('123456') where user='root';执行这条语句时会报错。
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '('12346') where user='root'' at line 1
报错的原因是MySQL8.0版本取消了password函数进行加密。由于上面的脚本中改密码的语句报错,所以我们换了一条改密码语句,如下:
ALTER USER 'root'@'localhost' IDENTIFIED BY 'hxpatroldelay_mysqldb';
这条语句也会报错,错误如下:
ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement.
即因为我们处于免密登陆模式下,只能进行查询以及改密码的操作,不能进行alert操作。经过n次尝试后,我们了解到初始化MySQL的数据目录可以重新生成一个临时密码,话不多说,看操作
第一次初始化,直接开始初始化。
- [root@nw_hq_shszwc_204_150 ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/hqdata/mysql
-
- You have new mail in /var/spool/mail/root
日志报错:
- 2022-06-23T06:29:40.071157Z 0 [ERROR] [MY-010457] [Server] --initialize specified but the data directory has files in it. Aborting.
-
- 2022-06-23T06:29:40.071249Z 0 [ERROR] [MY-013236] [Server] The designated data directory /hqdata/mysql/ is unusable. You can remove all files that the server added to it.
-
- 2022-06-23T06:29:40.071477Z 0 [ERROR] [MY-010119] [Server] Aborting
原因:在初始化之前要先手动清空数据目录,数据目录不为空的话mysqld服务无法重新生成新数据。 导致后面重启mysqld服务失败,因为没有在初始化之前删除mysql的数据目录。
- [root@nw_hq_shszwc_204_150 ~]#
-
- [root@nw_hq_shszwc_204_150 ~]# service mysqld restart
-
- MySQL server PID file could not be found! [ʧ▒▒]
-
- Starting MySQL...................The server quit without up[ʧ▒▒]g PID file (/hqdata/mysql/nw_hq_shszwc_204_150.pid).
-
- 日志报错:2022-06-23T06:36:37.837501Z 0 [ERROR] [MY-011292] [Server] Plugin mysqlx reported: 'Preparation of I/O interfaces failed, X Protocol won't be accessible'
- 2022-06-23T06:36:37.838064Z 0 [ERROR] [MY-011300] [Server] Plugin mysqlx reported: 'Setup of bind-address: '*' port: 33060 failed, `bind()` failed with error: Address already in use (98). Do you already have another mysqld server running with Mysqlx ?'
- 2022-06-23T06:36:37.838773Z 0 [ERROR] [MY-011300] [Server] Plugin mysqlx reported: 'Setup of socket: '/tmp/mysqlx.sock' failed, another process with PID 18968 is using UNIX socket file'
- 2022-06-23T06:36:39.338736Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
- 2022-06-23T06:36:39.341413Z 0 [ERROR] [MY-010262] [Server] Can't start server: Bind on TCP/IP port: Address already in use
-
- 2022-06-23T06:36:39.341702Z 0 [ERROR] [MY-010257] [Server] Do you already have another mysqld server running on port: 3306 ?
-
- 2022-06-23T06:36:39.342523Z 0 [ERROR] [MY-010119] [Server] Aborting
因为mysqld服务无法关闭,导致的重启失败。初始化之后,临时密码会生成在日志文件中。使用临时密码登陆后,即可使用alert语句更改密码:
- mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '10jqka@mysqlDB';
- Query OK, 0 rows affected (0.09 sec)
- mysql> flush privileges;
- Query OK, 0 rows affected (0.00 sec)
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