Use replace into to create a root privileged user after skipping authorization table login
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
