詳細說明MySQL創建數據庫與創建用戶以及授權
發表時間:2023-09-02 來源:明輝站整理相關軟件相關文章人氣:
[摘要]1.通過mysql數據庫的user表查看用戶相關信息mysql> use mysqlReading table information for completion of table and column namesYou can turn off this feature to get a...
1.通過mysql數據庫的user表查看用戶相關信息
mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select host,user,password from user ;+-----------+------+-------------------------------------------+
host user password
+-----------+------+-------------------------------------------+
localhost root *87F2746835A04895BB77E12AA5054A767*******
qxyw root
127.0.0.1 root
localhost
qxyw
+-----------+------+-------------------------------------------+
5 rows in set (0.00 sec)
2.創建數據庫
mysql> create database [databasename] default character set utf8 collate utf8_general_ci;
Query OK, 1 row affected (0.00 sec)
3.創建用戶
mysql> create user 'dba'@'%' identified by '*******';
Query OK, 0 rows affected (0.00 sec)
user表中host列的值的意義
% 匹配所有主機
localhost localhost不會被解析成IP地址,直接通過UNIXsocket連接
127.0.0.1 會通過TCP/IP協議連接,并且只能在本機訪問;
::1 ::1就是兼容支持ipv6的,表示同ipv4的127.0.0.1
4.對dba用戶給予針對指定數據庫進行增刪改查的權限
mysql> grant select,insert,update,delete,create on [databasename].* to dba;
Query OK, 0 rows affected (0.00 sec)
注意:修改完權限以后 一定要刷新服務,或者重啟服務,刷新服務用:FLUSH PRIVILEGES
5.可以通過show grants命令查看權限,若想要在原來的基礎上增加權限則繼續執行grant
mysql> grant drop on [databasename].* to dba;
Query OK, 0 rows affected (0.00 sec)
mysql> show grants for dba;+----------------------------------------------------------------------------------------------------+
Grants for dba@%
+----------------------------------------------------------------------------------------------------+
GRANT USAGE ON *.* TO 'dba'@'%' IDENTIFIED BY PASSWORD '*****************************************'
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP ON `[databasename]`.* TO 'dba'@'%'
+----------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
6.通過revoke命令可以移除用戶的相關權限
mysql> revoke drop on [databasename].* from dba;
Query OK, 0 rows affected (0.00 sec)
mysql> show grants for dba;+----------------------------------------------------------------------------------------------------+
Grants for dba@%
+----------------------------------------------------------------------------------------------------+
GRANT USAGE ON *.* TO 'dba'@'%' IDENTIFIED BY PASSWORD '*****************************************'
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE ON `[databasename]`.* TO 'dba'@'%'
+----------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
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