' to'Pccbnbbs_r'@'172.16.0.159'All: Indicates that all actions are added or deleted. Change the library name: represents the Operation permissions for the library, any library uses*Table Name: Represents the action permission for a table in the library, any table using*User: Login username192.168.1.%: Indicates allow 192.168.1 All machines on this network segment have login privileges. If you want any computer to log in using%identified by: Set the login password to grant permission to refresh,
| *05ea4d71c9a1273ecf3e24e6323f7175ae45c366 || localhost | Zabbix | *6bb4837eb74329105ee4568dda7dc67ed2ca2ad9 |+---------------+---------------+------------------------------------------------------------+Problem:On the client (such as 192.168.1.20) remote connection above the 192.168.1.152 machine MySQL, the connection failed![Email protected] ~]# mysql-udb_ro_hqsb-h 192.168.1.152-pmhxzkhl0802xqsjdbERROR 1130 (HY000): Host ' 192.168.1.20 ' isn't allowed to connect to this MySQL serverSolve:is d
Mysql> Grant all on performance_schema.* to ' testuser ';ERROR 1044 (42000): Access denied for user ' root ' @ ' localhost ' to database ' Performance_schema 'Mysql> Grant all on information_schema.* to ' testuser ';ERROR 1044 (42000): Access denied for user ' root ' @ ' localhost ' to database ' Information_schema 'Mysql> Grant Select on Information_schema.* to ' testuser ';ERROR 1044 (42000): Access denied for user ' root ' @ ' localhost ' to database ' Information_schema 'Mysql> Grant Select
account can issue per hourAn account can initiate the number of query operations per hourThe number of updates an account can issue per hourThe number of update operations that an account can initiate per hourThe number of times an account can connect to the server per hourThe number of times an account can connect to a server per hourThe number of simultaneous connections to the server by a accountAn account can also be connected to the number of servers,#查看权限Show GRANTS for ' testzzq ' @ ' lo
; flush privileges;These three sentences and the second sentence above Grant's effect is also the same, also added a can only from the Class C subnet 192.168.1 connection, the test library has select,insert,update,delete,create,drop operation rights of Test1 users, The password is test. To remove a user's permissions, use the REVOKE statement. The syntax of the revoke is very similar to the grant statement, except that to is substituted by and without the identified by and with GRANT OPTION clau
' test ' @ ' localhost ' for table ' test_1 'Mysql-utest-p123456-e ' select * from Test.test_2 '; Query there's somethingNote: Authorizing a nonexistent table can also be successful, and you can also view the permissions.3.1 Revoke permissionsRevoke all on test.test_2 from [email protected] ' localhost ';Flush privileges;4. Hide library does not allow authorizationInformation_schema This library stores MySQL metadata such as database name or table name, column data type, or access permissions,
monitor.Commands End With; or \g.
Mysql> Delete from mydb.student where id=1;
Query OK, 1 row Affected (0.00 sec)Logging on the server can be successfully removed.View authorizationsmysql>showgrantsfor[emailprotected]; +-------------------------------------------------------------------------------------------------------------- + |grantsfor[emailprotected]
| +-------------------------------------------------------------------------------------------------------------- + |grantusageon*.*to
Actually I just don't understandAndSELECT * FROM Mysql.user\gThe difference: the latter is the permission to all libraries, the former if you want to query the permissions of a single library can use the former!The following two map will be able to understand:650) this.width=650; "style=" Float:none; "title=" 3.png "src=" http://s3.51cto.com/wyfs02/M01/75/00/ Wkiom1ywc0nqwztyaajuoyoxtqu816.jpg "alt=" Wkiom1ywc0nqwztyaajuoyoxtqu816.jpg "/>650) this.width=650; "style=" Float:none; "title=" 4.png "
I use the root account of localhost can not even last ask the DBA group New user to get it done!
Now get some authorized user information for a rainy future.
Examples of use of authorization forms
Grant is used to add users and create permissions,
Problem description: The magician uses 13 black cards in a deck to arrange them in advance and stack them together, with the cards facing down. Said to the audience: "I don't watch a card. I can guess what each card is. I can count it out loud. Do
Using system; using system. collections. generic; using system. componentmodel; using system. data; using system. drawing; using system. text; using system. windows. forms; using system. runtime. interopservices; using system. windows. forms.
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You can verify the method that comes with the genuine authorization of the Windows 7 system through both online and native query methods.
Method One: Through the Microsoft website online authentication, click here to enter for verification.
1, installed in the computer "ITunes" the latest version of (if not Baidu search download)
2, as shown in the figure we find the upper left corner of the inverted triangle icon to the left side of the black right white, in the next menu we click
Use zxing batch in the designated position of a good standing card background map, the specified text content (link address, text, etc.) generated two-dimensional code and placed in the position, and finally add the sign number.
Steps:
1). Do the
I use localhost root account can not even ask the DBA group to finalize the new user!
Now get some information for the authorized user for a rainy
Examples of Authorization table usage
Grant is used to add users and create permissions, revoke to
Finally compile the CAs 5.1.8, generate the war package, and modify the configuration, support Database (Oracle) way authentication, deploy to Tomcat, ready to use, which one to open the client application, skip to CAS, no account password input box,
Micro-trust Web page authorization is the service number of the advanced functions, developers can obtain the user's basic information through authorization, before this, want to get message information only when the user and the public number of
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