标题索引
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官方帮助
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常用案例
官方帮助
在使用数据库时必不可少的即是查看help帮助,通过help帮助再次寻找常用命令及参数,如下为help grant信息:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | MariaDB [(none)]> help grant ; Name : 'GRANT' Description: Syntax: GRANT priv_type [(column_list)] [, priv_type [(column_list)]] ... ON [object_type] priv_level TO user_specification [, user_specification] ... [REQUIRE {NONE | ssl_option [[ AND ] ssl_option] ...}] [ WITH with_option ...] GRANT PROXY ON user_specification TO user_specification [, user_specification] ... [ WITH GRANT OPTION ] object_type: TABLE | FUNCTION | PROCEDURE priv_level: * | *.* | db_name.* | db_name.tbl_name | tbl_name | db_name.routine_name user_specification: user [ IDENTIFIED BY [ PASSWORD ] 'password' | IDENTIFIED WITH auth_plugin [ AS 'auth_string' ] ] Normally, a database administrator first uses CREATE USER to create an account, then GRANT to define its privileges and characteristics. For example: CREATE USER 'jeffrey' @ 'localhost' IDENTIFIED BY 'mypass' ; GRANT ALL ON db1.* TO 'jeffrey' @ 'localhost' ; GRANT SELECT ON db2.invoice TO 'jeffrey' @ 'localhost' ; GRANT USAGE ON *.* TO 'jeffrey' @ 'localhost' WITH MAX_QUERIES_PER_HOUR 90; |
常用配置
1.授权单位普通DBA或运维人员增删改查命令
1 2 3 4 | MariaDB [(none)]> create table performance( id int , server_name varchar (20), Adress_City varchar (30) ); MariaDB [(none)]> grant select , update , delete , insert on cluster.performance to root@ '172.18.0.%' identified by 'jncsy' ; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> flush privileges ; |
2.授权某个用户某张表的某几列查询命令
1 2 3 | MariaDB [(none)]> grant select (id,server_name) on cluster.performance to root@ '172.18.0.%' identified by 'jncsy' ; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> flush privileges ; |
3.撤销某用户的授权权限
1 2 3 4 5 6 7 8 9 10 | MariaDB [(none)]> show grants for root@ '172.18.0.%' ; + --------------------------------------------------------------------------------------------------------------+ | Grants for root@172.18.0.% | + --------------------------------------------------------------------------------------------------------------+ | GRANT USAGE ON *.* TO 'root' @ '172.18.0.%' IDENTIFIED BY PASSWORD '*429B3FB345D35EC8C8B54230AD060C07E846494A' | | GRANT SELECT , INSERT , UPDATE , DELETE ON `cluster`.`performance` TO 'root' @ '172.18.0.%' | + --------------------------------------------------------------------------------------------------------------+ 2 rows in set (0.00 sec) MariaDB [(none)]> revoke select on cluster.performance from root@ '172.18.0.%' ; Query OK, 0 rows affected (0.00 sec) |