Shulou(Shulou.com)06/01 Report--

Cause:

Just set up the mysql database, do basic optimization, accidentally delete all users, and quit. We have no choice but to skip the authorization table and log in and create a new root user.

The process is as follows:

First, stop mysql and skip authorization login

[root@explnk-zabbix zabbix-2.2.9] # / etc/init.d/mysqld stop

Shutting down MySQL... SUCCESS!

[root@explnk-zabbix zabbix-2.2.9] # mysqld_safe-- skip-grant-table &

[1] 30178

[root@explnk-zabbix zabbix-2.2.9] # 160418 10:49:54 mysqld_safe Logging to'/ application/mysql/data/explnk-zabbix.err'.

160418 10:49:54 mysqld_safe Starting mysqld daemon with databases from / application/mysql/data

[root@explnk-zabbix zabbix-2.2.9] # mysql

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

Your MySQL connection id is 1

Server version: 5.5.32 MySQL Community Server (GPL)

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

Affiliates. Other names may be trademarks of their respective

Owners.

Type 'help;' or'\ h' for help. Type'\ c'to clear the current input statement.

Mysql >

2. Create users with root permissions

2.1 examples of errors:

A pit is encountered at the beginning. The user created with insert into does not have any permissions and cannot operate after logging in. The statement is as follows:

INSERT INTO user (Host,User,Password) VALUES ('localhost','root',PASSWORD (' biscuit'))

* 2. Row * *

Host: localhost

User: root

Password: * 7495041D24E489A0096DCFA036B166446FDDD992

Select_priv: N

Insert_priv: N

Update_priv: N

Delete_priv: N

Create_priv: N

Drop_priv: N

Reload_priv: N

Shutdown_priv: N

Process_priv: N

File_priv: N

Grant_priv: N

References_priv: N

Index_priv: N

Alter_priv: N

Show_db_priv: N

Super_priv: N

Create_tmp_table_priv: N

Lock_tables_priv: N

Execute_priv: N

Repl_slave_priv: N

Repl_client_priv: N

Create_view_priv: N

Show_view_priv: N

Create_routine_priv: N

Alter_routine_priv: N

Create_user_priv: N

Event_priv: N

Trigger_priv: N

Create_tablespace_priv: N

Ssl_type:

Ssl_cipher:

X509_issuer:

X509_subject:

Max_questions: 0

Max_updates: 0

Max_connections: 0

Max_user_connections: 0

Plugin:

Authentication_string: NULL

2.2 correct method 1:

Mysql > use mysql

Database changed

Mysql > insert into user (Select_priv, Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv, Reload_priv, Shutdown_priv, Process_priv, File_priv, Grant_priv, References_priv, Index_priv, Alter_priv, Show_db_priv, Super_priv, Create_tmp_table_priv, Lock_tables_priv, Execute_priv, Repl_slave_priv, Repl_client_priv, Create_view_priv, Show_view_priv, Create_routine_priv, Alter_routine_priv, Create_user_priv Values ('Event_priv, Trigger_priv,Create_tablespace_priv,User,Password) values (' Yaoyumi, Yaoyun, Yaoyun, Yaoyun 'Yhere 's a lot of money,'he said.

Query OK, 1 row affected, 3 warnings (0.06 sec)

Mysql > update user set password=PASSWORD ('explink') where user='gl'

Query OK, 1 row affected (0.08 sec)

Rows matched: 1 Changed: 1 Warnings: 0

2.3 correct method 2:

You cannot use grant to establish a user after skipping authorization form login. The error is as follows:

Mysql > grant all privileges on *. * to liang@'localhost' identified by '123456' with grant option

ERROR 1290 (HY000): The MySQL server is running with the-- skip-grant-tables option so it cannot execute this statement

Solution:

Just refresh the user permissions.

Mysql > flush privileges

Query OK, 0 rows affected (0.00 sec)

Mysql > grant all privileges on *. * to liang@'localhost' identified by '123456' with grant option

Query OK, 0 rows affected (0.00 sec)

Log out and restart mysql

[root@explnk-zabbix zabbix-2.2.9] # / etc/init.d/mysqld stop

[root@explnk-zabbix zabbix-2.2.9] # / etc/init.d/mysqld start

4. Log in to mysql to view permissions

[root@explnk-zabbix zabbix-2.2.9] # mysql-ugl-p

Enter password:

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

Your MySQL connection id is 1

Server version: 5.5.32 MySQL Community Server (GPL)

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

Affiliates. Other names may be trademarks of their respective

Owners.

Type 'help;' or'\ h' for help. Type'\ c'to clear the current input statement.

Mysql > select * from mysql.user\ G

* 3. Row * *

Host:

User: gl

Password: * 5F70B50879BD3B98CB5A945D3A6A7C92F41B8AE8

Select_priv: Y

Insert_priv: Y

Update_priv: Y

Delete_priv: Y

Create_priv: Y

Drop_priv: Y

Reload_priv: Y

Shutdown_priv: Y

Process_priv: Y

File_priv: Y

Grant_priv: Y

References_priv: Y

Index_priv: Y

Alter_priv: Y

Show_db_priv: Y

Super_priv: Y

Create_tmp_table_priv: Y

Lock_tables_priv: Y

Execute_priv: Y

Repl_slave_priv: Y

Repl_client_priv: Y

Create_view_priv: Y

Show_view_priv: Y

Create_routine_priv: Y

Alter_routine_priv: Y

Create_user_priv: Y

Event_priv: Y

Trigger_priv: Y

Create_tablespace_priv: Y

Ssl_type:

Ssl_cipher:

X509_issuer:

X509_subject:

Max_questions: 0

Max_updates: 0

Max_connections: 0

Max_user_connections: 0

Plugin:

Authentication_string: NULL

3 rows in set (0.00 sec)

VI. Perfect

Refer to blog: http://my.oschina.net/leejun2005/blog/76140

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