Merge pull request #26199 from taosdata/docs/TD-30581-3.0
docs: createdb permission for user
This commit is contained in:
wade zhang
GitHub
commit
64dca95f33
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@ -39,10 +39,10 @@ This is an example:
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```sql
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taos> show users;
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name | super | enable | sysinfo | create_time |
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================================================================================
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test | 0 | 1 | 1 | 2022-08-29 15:10:27.315 |
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root | 1 | 1 | 1 | 2022-08-29 15:03:34.710 |
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name | super | enable | sysinfo | createdb | create_time | allowed_host |
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=========================================================================================================
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test | 0 | 1 | 1 | 0 |2022-08-29 15:10:27.315 | 127.0.0.1 |
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root | 1 | 1 | 1 | 1 |2022-08-29 15:03:34.710 | 127.0.0.1 |
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Query OK, 2 rows in database (0.001657s)
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```
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@ -50,10 +50,10 @@ Alternatively, you can get the user information by querying a built-in table, IN
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```sql
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taos> select * from information_schema.ins_users;
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name | super | enable | sysinfo | create_time |
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================================================================================
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test | 0 | 1 | 1 | 2022-08-29 15:10:27.315 |
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root | 1 | 1 | 1 | 2022-08-29 15:03:34.710 |
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name | super | enable | sysinfo | createdb | create_time | allowed_host |
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=========================================================================================================
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test | 0 | 1 | 1 | 0 |2022-08-29 15:10:27.315 | 127.0.0.1 |
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root | 1 | 1 | 1 | 1 |2022-08-29 15:03:34.710 | 127.0.0.1 |
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Query OK, 2 rows in database (0.001953s)
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```
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@ -67,17 +67,19 @@ DROP USER user_name;
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```sql
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ALTER USER user_name alter_user_clause
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alter_user_clause: {
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PASS 'literal'
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| ENABLE value
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| SYSINFO value
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| CREATEDB value
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}
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```
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- PASS: Modify the user password.
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- ENABLE: Specify whether the user is enabled or disabled. 1 indicates enabled and 0 indicates disabled.
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- SYSINFO: Specify whether the user can query system information. 1 indicates that the user can query system information and 0 indicates that the user cannot query system information.
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- CREATEDB: Specify whether the user can create databases. 1 indicates that the user can create databases and 0 indicates that the user cannot create databases.
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For example, you can use below command to disable user `test`:
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@ -0,0 +1,91 @@
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---
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title: 用户管理
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sidebar_label: 用户管理
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description: 本节讲述基本的用户管理功能
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---
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用户和权限管理是 TDengine 企业版的功能，本节只讲述基本的用户管理部分。要想了解和获取全面的权限管理功能，请联系 TDengine 销售团队。
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## 创建用户
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```sql
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CREATE USER user_name PASS 'password' [SYSINFO {1|0}];
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```
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用户名最长不超过 23 个字节。
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密码最长不超过 31 个字节。密码可以包含字母、数字以及除单引号、双引号、反引号、反斜杠和空格以外的特殊字符，密码不能为空字符串。
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`SYSINFO` 表示该用户是否能够查看系统信息。`1` 表示可以查看，`0` 表示无权查看。系统信息包括服务配置、dnode、vnode、存储等信息。缺省值为 `1`。
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在下面的示例中，我们创建一个密码为 `123456` 且可以查看系统信息的用户。
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```sql
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taos> create user test pass '123456' sysinfo 1;
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Query OK, 0 of 0 rows affected (0.001254s)
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```
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## 查看用户
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可以使用如下命令查看系统中的用户。
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```sql
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SHOW USERS;
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```
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以下是示例：
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```sql
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taos> show users;
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name | super | enable | sysinfo | createdb | create_time | allowed_host |
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=========================================================================================================
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test | 0 | 1 | 1 | 0 |2022-08-29 15:10:27.315 | 127.0.0.1 |
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root | 1 | 1 | 1 | 1 |2022-08-29 15:03:34.710 | 127.0.0.1 |
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Query OK, 2 rows in database (0.001657s)
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```
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或者，可以查询内置系统表 INFORMATION_SCHEMA.INS_USERS 来获取用户信息。
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```sql
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taos> select * from information_schema.ins_users;
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name | super | enable | sysinfo | createdb | create_time | allowed_host |
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=========================================================================================================
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test | 0 | 1 | 1 | 0 |2022-08-29 15:10:27.315 | 127.0.0.1 |
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root | 1 | 1 | 1 | 1 |2022-08-29 15:03:34.710 | 127.0.0.1 |
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Query OK, 2 rows in database (0.001953s)
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```
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## 删除用户
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```sql
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DROP USER user_name;
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```
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## 修改用户配置
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```sql
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ALTER USER user_name alter_user_clause
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alter_user_clause: {
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PASS 'literal'
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| ENABLE value
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| SYSINFO value
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| CREATEDB value
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}
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```
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- PASS: 修改密码，后跟新密码
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- ENABLE: 启用或禁用该用户，`1` 表示启用，`0` 表示禁用
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- SYSINFO: 允许或禁止查看系统信息，`1` 表示允许，`0` 表示禁止
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- CREATEDB: 允许或禁止创建数据库，`1` 表示允许，`0` 表示禁止
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下面的示例禁用了名为 `test` 的用户:
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```sql
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taos> alter user test enable 0;
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Query OK, 0 of 0 rows affected (0.001160s)
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```
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## 授权管理
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授权管理仅在 TDengine 企业版中可用，请联系 TDengine 销售团队。
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