# 分布式消息服务RocketMQ版 RocketMQ 云服务在IAM预置了常用的权限，称为系统身份策略。如果IAM系统身份策略无法满足授权要求，管理员可以根据各服务支持的授权项，创建IAM自定义身份策略来进行精细的访问控制，IAM自定义身份策略是对系统身份策略的扩展和补充。 除IAM服务外，[Organizations](https://support.huaweicloud.com/productdesc-organizations/org_01_0011.html)服务中的[服务控制策略](https://support.huaweicloud.com/usermanual-organizations/org_03_0065.html)（Service Control Policy，以下简称SCP）也可以使用这些授权项元素设置访问控制策略。 SCP不直接进行授权，只划定权限边界。将SCP绑定到组织单元或者成员账号时，并没有直接对组织单元或成员账号授予操作权限，而是规定了成员账号或组织单元包含的成员账号的授权范围。IAM身份策略授予权限的有效性受SCP限制，只有在SCP允许范围内的权限才能生效。 IAM服务与Organizations服务在使用这些元素进行访问控制时，存在着一些区别，详情请参见：[IAM服务与Organizations服务权限访问控制的区别](https://support.huaweicloud.com/organizations_faq/org_06_0004.html)。 本章节介绍IAM服务身份策略授权场景中自定义身份策略和组织服务中SCP使用的元素，这些元素包含了操作（Action）、资源（Resource）和条件（Condition）。 - 如何使用这些元素编辑IAM自定义身份策略，请参考[创建自定义身份策略](https://support.huaweicloud.com/usermanual-iam5/iam_01_0917.html)。 - 如何使用这些元素编辑SCP自定义策略，请参考[创建SCP](https://support.huaweicloud.com/usermanual-organizations/org_03_0035.html)。 #### 操作（Action） 操作（Action）即为身份策略中支持的授权项。 - "访问级别"列描述如何对操作进行分类（List、Read和Write等）。此分类可帮助您了解在身份策略中相应操作对应的访问级别。 - "资源类型"列指每个操作是否支持资源级权限。 - 资源类型支持通配符号\*表示所有。如果此列没有值（-），则必须在身份策略语句的Resource元素中指定所有资源类型（"\*"）。 - 如果该列包含资源类型，则必须在具有该操作的语句中指定该资源的URN。 - 资源类型列中必需资源在表中用星号（\*）标识，表示使用此操作必须指定该资源类型。 关于DMS for RocketMQ定义的资源类型的详细信息请参见[资源类型（Resource）]。 - "条件键"列包括了可以在身份策略语句的Condition元素中支持指定的键值。 - 如果该授权项资源类型列存在值，则表示条件键仅对列举的资源类型生效。 - 如果该授权项资源类型列没有值（-），则表示条件键对整个授权项生效。 - 如果此列条件键没有值（-），表示此操作不支持指定条件键。 关于DMS for RocketMQ定义的条件键的详细信息请参见[条件（Condition）]。 - "别名"列包括了可以在身份策略中配置的策略授权项。通过这些授权项，可以控制支持策略授权的API访问。详细信息请参见[身份策略兼容性说明](https://support.huaweicloud.com/iam5_faq/iam_01_1103.html)。 您可以在身份策略语句的Action元素中指定以下DMS for RocketMQ的相关操作。 表1DMS for RocketMQ支持的授权项 | 授权项 | 描述 | 访问级别 | 资源类型（\*为必须） | 条件键 | 别名 | |:---|:---|:---|:---|:---|:---| | dms:instance:list | 授予查看实例列表的权限。 | List | rocketmq \* | [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - | | dms:instance:create | 授予创建实例的权限。 | Write | rocketmq \* | - [g:RequestTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:TagKeys](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [dms:ssl] - [dms:publicIp] | - | | dms:instance:update | 授予修改实例的权限。 | Write | rocketmq \* | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:RequestTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:TagKeys](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:instance:getDetail | 授予查看实例详情的权限。 | Read | rocketmq \* | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:instance:modifyConfig | 授予修改实例配置的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - | | dms:instance:delete | 授予删除实例的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - | | dms:message:export | 授予导出消息列表的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:message:export | 授予导出消息列表的权限。 | Write | topic | - | - dms:instance:modify | | dms:message:get | 授予查询消息详情的权限。 | Read | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:message:get | 授予查询消息详情的权限。 | Read | topic | - | - dms:instance:get | | dms:message:getTrace | 授予查询消息轨迹的权限。 | Read | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:message:send | 授予发送消息的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:topic:list | 授予获取主题列表的权限。 | List | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:topic:list | 授予获取主题列表的权限。 | List | topic \* | - | - dms:instance:get | | dms:topic:modify | 授予修改主题的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:topic:modify | 授予修改主题的权限。 | Write | topic \* | - | - dms:instance:modify | | dms:topic:create | 授予创建主题的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:topic:create | 授予创建主题的权限。 | Write | topic | - | - dms:instance:modify | | dms:topic:delete | 授予删除主题的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:topic:delete | 授予删除主题的权限。 | Write | topic \* | - | - dms:instance:modify | | dms:topic:getAccessPolicy | 授予获取主题授权策略的权限。 | Read | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:topic:getAccessPolicy | 授予获取主题授权策略的权限。 | Read | topic \* | - | - dms:instance:get | | dms:topic:get | 授予查询主题信息的权限。 | Read | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:topic:get | 授予查询主题信息的权限。 | Read | topic \* | - | - dms:instance:get | | dms:user:list | 授予获取实例用户列表的权限。 | List | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:user:get | 授予获取实例用户详情的权限。 | Read | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:user:modify | 授予修改实例用户信息的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:user:delete | 授予删除实例用户的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:user:create | 授予新增实例用户的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:group:get | 授予获取消费组的详情的权限。 | Read | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:group:get | 授予获取消费组的详情的权限。 | Read | consumerGroup \* | - | - dms:instance:get | | dms:group:getAccessPolicy | 授予获取消费组的访问策略的权限。 | Read | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:group:getAccessPolicy | 授予获取消费组的访问策略的权限。 | Read | consumerGroup \* | - | - dms:instance:get | | dms:group:resetConsumeOffset | 授予重置消费组的消费进度的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:group:resetConsumeOffset | 授予重置消费组的消费进度的权限。 | Write | consumerGroup \* | - | - dms:instance:modify | | dms:group:list | 授予获取消费组列表的权限。 | List | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:group:list | 授予获取消费组列表的权限。 | List | consumerGroup \* | - | - dms:instance:get | | dms:group:modify | 授予修改消费组的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:group:modify | 授予修改消费组的权限。 | Write | consumerGroup \* | - | - dms:instance:modify | | dms:group:create | 授予创建消费组的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:group:create | 授予创建消费组的权限。 | Write | consumerGroup \* | - | - dms:instance:modify | | dms:group:delete | 授予删除消费组的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:modify | | dms:group:delete | 授予删除消费组的权限。 | Write | consumerGroup \* | - | - dms:instance:modify | | dms:broker:list | 授予获取实例代理列表的权限。 | List | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - dms:instance:get | | dms:instance:createMetadataMigrationTask | 授予创建实例元数据迁移任务的权限。 | Write | rocketmq \* | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - | | dms:instance:listMetadataMigrationTasks | 授予查询实例元数据迁移任务列表的权限。 | Write | rocketmq \* | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - | | dms:instance:deleteMetadataMigrationTask | 授予删除实例元数据迁移任务的权限。 | Write | rocketmq \* | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - | | dms:instance:resendDlqMsg | 授予重发死信消息的权限。 | Write | rocketmq | - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html#section2) | - | DMS for RocketMQ的API通常对应着一个或多个授权项。[表2]展示了API与授权项的关系，以及该API需要依赖的授权项。 表2API与授权项的关系 | API | 对应的授权项 | 依赖的授权项 | |:---|:---|:---| | GET /v2/{engine}/{project_id}/instances/{instance_id}/messages | dms:message:get | - | | POST /v2/{project_id}/instances/{instance_id}/messages/export | dms:message:export | - | | POST /v2/{project_id}/instances/action | dms:instance:delete | - | | GET /v2/{project_id}/instances | dms:instance:list | - | | GET /v2/{project_id}/instances/{instance_id} | dms:instance:getDetail | - vpc:vpcs:get - vpc:ports:get - vpc:securityGroups:get - vpc:subnets:get - eip:publicIps:get | | PUT /v2/{project_id}/instances/{instance_id} | dms:instance:update | - vpc:vpcs:get - vpc:subnets:get - eip:publicIps:get - eip:publicIps:update - vpc:ports:get - vpc:securityGroups:get - vpc:securityGroups:update | | DELETE /v2/{project_id}/instances/{instance_id} | dms:instance:delete | - | | GET /v2/{engine}/{project_id}/instances/{instance_id}/trace | dms:message:getTrace | - | | GET /v2/{project_id}/instances/{instance_id}/topics | dms:topic:list | - | | POST /v2/{project_id}/instances/{instance_id}/topics | dms:topic:create | dms:topic:delete | | GET /v2/{project_id}/instances/{instance_id}/users | dms:user:list | - | | POST /v2/{project_id}/instances/{instance_id}/users | dms:user:create | - | | GET /v2/{project_id}/instances/{instance_id}/users/{user_name} | dms:user:get | - | | DELETE /v2/{project_id}/instances/{instance_id}/users/{user_name} | dms:user:delete | - | | PUT /v2/{project_id}/instances/{instance_id}/users/{user_name} | dms:user:modify | - | | GET /v2/{project_id}/instances/{instance_id}/topics/{topic}/accesspolicy | dms:topic:getAccessPolicy | - | | GET /v2/{engine}/{project_id}/instances/{instance_id}/groups/{group_id}/accesspolicy | dms:group:getAccessPolicy | - | | GET /v2/{project_id}/instances/{instance_id}/topics/{topic}/status | dms:topic:get | - | | GET /v2/{project_id}/instances/{instance_id}/topics/{topic}/groups | dms:topic:get | - | | GET /v2/{project_id}/instances/{instance_id}/groups/{group}/topics | dms:group:get | - | | POST /v2/{engine}/{project_id}/instances/{instance_id}/groups/{group_id}/reset-message-offset | dms:group:resetConsumeOffset | - | | GET /v2/{project_id}/instances/{instance_id}/brokers | dms:broker:list | - | | GET /v2/{project_id}/instances/{instance_id}/groups | dms:group:list | - | | PUT /v2/{project_id}/instances/{instance_id}/groups | dms:group:modify | - | | POST /v2/{project_id}/instances/{instance_id}/groups | dms:group:create | dms:group:delete | | GET /v2/{project_id}/instances/{instance_id}/groups/{group} | dms:group:get | - | | PUT /v2/{project_id}/instances/{instance_id}/groups/{group} | dms:group:modify | - | | DELETE /v2/{project_id}/instances/{instance_id}/groups/{group} | dms:group:delete | - | | GET /v2/{project_id}/instances/{instance_id}/topics/{topic} | dms:topic:get | - | | PUT /v2/{project_id}/instances/{instance_id}/topics/{topic} | dms:topic:modify | - | | DELETE /v2/{project_id}/instances/{instance_id}/topics/{topic} | dms:topic:delete | - | | POST /v2/{engine}/{project_id}/instances | dms:instance:create | - vpc:vpcs:get - vpc:vpcs:list - vpc:ports:get - vpc:ports:create - vpc:ports:update - vpc:ports:delete - vpc:securityGroups:get - vpc:subnets:get - eip:publicIps:get - eip:publicIps:list - eip:publicIps:update | | POST /v2/{project_id}/rocketmq/{instance_id}/tags/action | dms:instance:update | - | | GET /v2/{project_id}/rocketmq/{instance_id}/tags | dms:instance:getDetail | - | | GET /v2/{project_id}/rocketmq/tags | dms:instance:getDetail | - | | GET /v2/rocketmq/{project_id}/instances/{instance_id}/groups/{group}/clients | dms:group:get | - | | POST /v2/{engine}/{project_id}/instances/{instance_id}/messages/deadletter-resend | dms:instance:resendDlqMsg | - | | POST /v2/{engine}/{project_id}/instances/{instance_id}/messages/resend | dms:message:send | - | | POST /v2/{project_id}/instances/{instance_id}/metadata | dms:instance:createMetadataMigrationTask | - | | GET /v2/{project_id}/instances/{instance_id}/metadata | dms:instance:listMetadataMigrationTasks | - | | DELETE /v2/{project_id}/instances/{instance_id}/metadata | dms:instance:deleteMetadataMigrationTask | - | | GET /v2/{project_id}/rocketmq/instances/{instance_id}/configs | dms:instance:getDetail | - | | PUT /v2/{project_id}/rocketmq/instances/{instance_id}/configs | dms:instance:modifyConfig | - | #### 资源类型（Resource） 资源类型（Resource）表示身份策略所作用的资源。如[表3]中的某些操作指定了可以在该操作指定的资源类型，则必须在具有该操作的身份策略语句中指定该资源的URN，身份策略仅作用于此资源；如未指定，Resource默认为"\*"，则身份策略将应用到所有资源。您也可以在身份策略中设置条件，从而指定资源类型。 DMS for RocketMQ定义了以下可以在自定义身份策略的Resource元素中使用的资源类型。 表3DMS for RocketMQ支持的资源类型 | 资源类型 | URN | |:---|:---| | topic | dms:\:\:topic:\/\ | | consumerGroup | dms:\:\:consumerGroup:\/\ | | rocketmq | dms:\:\:rocketmq:\ | #### 条件（Condition） **条件键概述** 条件（Condition）是身份策略生效的特定条件，包括[条件键](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html)和[运算符](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html)。 - 条件键表示身份策略语句的Condition元素中的键值。根据适用范围，分为全局级条件键和服务级条件键。 - 全局级条件键（前缀为g:）适用于所有操作，在鉴权过程中，云服务不需要提供用户身份信息，系统将自动获取并鉴权。详情请参见：[全局条件键](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html)。 - 服务级条件键（前缀通常为服务缩写，如dms:）仅适用于对应服务的操作，详情请参见[表4]。 - 单值/多值表示API调用时请求中与条件关联的值数。单值条件键在API调用时的请求中最多包含一个值，多值条件键在API调用时请求可以包含多个值。例如：g:SourceVpce是单值条件键，表示仅允许通过某个VPC终端节点发起请求访问某资源，一个请求最多包含一个VPC终端节点ID值。g:TagKeys是多值条件键，表示请求中携带的所有标签的key组成的列表，当用户在调用API请求时传入标签可以传入多个值。 - 运算符与条件键、条件值一起构成完整的条件判断语句，当请求信息满足该条件时，身份策略才能生效。支持的运算符请参见：[运算符](https://support.huaweicloud.com/usermanual-iam5/iam_01_0934.html)。 **DMS for RocketMQ支持的服务级条件键** DMS for RocketMQ定义了以下可以在自定义身份策略的Condition元素中使用的条件键，您可以使用这些条件键进一步细化身份策略语句应用的条件。 表4DMS for RocketMQ支持的服务级条件键 | 服务级条件键 | 类型 | 单值/多值 | 说明 | |:---|:---|:---|:---| | dms:ssl | boolean | 单值 | 根据实例是否开启SSL筛选访问权限。 | | dms:publicIp | boolean | 单值 | 根据实例是否开启公网访问筛选访问权限。 |