# 分布式缓存服务 DCS 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DCS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DCS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DCS的相关操作。 表1DCS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 | |:---|:---|:---|:---|:---|:---| | dcs:instance:create | 授予权限以创建缓存实例。 | Write | - | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:RequestTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:TagKeys](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [dcs:backupEnabled] - [dcs:AssociatePublicIp] - [dcs:VpcIds] - [dcs:SubnetIds] - [dcs:NoPasswordAccess] - [dcs:AvailableZones] | - | | dcs:instance:list | 授予权限以查询缓存列表。 | List | - | [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:exportListFile | 授予权限以下载导出的缓存实例列表文件。 | List | - | - | dcs:instance:list | | dcs:instance:delete | 授予权限以删除缓存实例。 | Write | instance | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:get | 授予权限以查询缓存实例。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:scale | 授予权限以扩容缓存实例。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:swap | 授予权限以执行缓存实例主备倒换。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:modifyAuthInfo | 授予权限以修改缓存实例密码。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:resetAuthInfo | 授予权限以重置缓存实例密码。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:resetAuthInfo | 授予权限以重置缓存实例密码。 | Write | - | [dcs:NoPasswordAccess] | - | | dcs:instance:modifyStatus | 授予权限以重启缓存实例或清空缓存实例数据。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:getConfiguration | 授予权限以查询实例配置参数。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:modifyConfiguration | 授予权限以修改缓存实例配置参数。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modifyConfigureation | | dcs:instance:deleteDataBackupFile | 授予权限以删除缓存实例备份数据。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:restoreData | 授予权限以恢复缓存实例数据。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:getDataRestoreLog | 授予权限以查询实例恢复记录。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:downloadBackupData | 授予权限以获取实例备份文件下载链接。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:backupData | 授予权限以备份缓存实例数据。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:getDataBackupLog | 授予权限以查询实例备份记录。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:migrationTask:create | 授予权限以创建数据迁移任务。 | Write | - | - | - | | dcs:migrationTask:list | 授予权限以查询数据迁移任务列表。 | List | - | - | - | | dcs:migrationTask:delete | 授予权限以删除数据迁移任务。 | Write | migrationTask | - | - | | dcs:migrationTask:get | 授予权限以查询数据迁移任务。 | Read | migrationTask \* | - | - | | dcs:migrationTask:modify | 授予权限以配置、停止数据迁移任务。 | Write | migrationTask \* | - | - dcs:migrationTask:exchangeIp - dcs:migrationTask:rollbackIp | | dcs:instance:analyzeBigKey | 授予权限以执行实例大key分析。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:downloadAnalyzeBigKeyResult | 授予权限以下载实例大key分析结果。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:listBigKey | 授予权限以查询实例大key列表。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:getBigKey | 授予权限以查询实例大key详情。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:deleteBigKeyScanTask | 授予权限以删除实例大key扫描任务。 | Write | instance | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:updateBigKeyAutoScanConfig | 授予权限以修改实例大key扫描任务配置。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:getBigKeyAutoScanConfig | 授予权限以查询实例大key扫描任务配置。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:analyzeHotKey | 授予权限以执行实例热key分析。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:listHotKey | 授予权限以查询实例热key列表。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:getHotKey | 授予权限以查询实例热key详情。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:deleteHotKeyScanTask | 授予权限以删除实例热key扫描任务。 | Write | instance | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:updateHotKeyAutoScanConfig | 授予权限以修改实例热key扫描任务配置。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:getHotKeyAutoScanConfig | 授予权限以查询实例热key扫描任务配置。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:analyzeExpiredKey | 授予权限以执行实例过期key分析。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:getAutoExpiredKeyScanTask | 授予权限以查询过期key扫描任务。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:updateExpiredKeyScanConfig | 授予权限以修改实例过期key扫描任务配置。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:getExpiredKeyScanConfig | 授予权限以查询实例过期key扫描任务配置。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:slowlog:list | 授予权限以查询慢日志列表。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:aclaccount:create | 授予权限以创建ACL账号。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:aclaccount:create | 授予权限以创建ACL账号。 | Write | - | [dcs:AccountRole] | - | | dcs:aclaccount:list | 授予权限以查询ACL账户列表。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:aclaccount:modifyRole | 授予权限以修改ACL账号角色。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:aclaccount:modify | | dcs:aclaccount:modifyRole | 授予权限以修改ACL账号角色。 | Write | - | [dcs:AccountRole] | dcs:aclaccount:modify | | dcs:aclaccount:resetPassword | 授予权限以重置ACL账号密码。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:aclaccount:modify | | dcs:aclaccount:modifyPassword | 授予权限以修改ACL账号密码。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:aclaccount:modify | | dcs:aclaccount:modifyRemark | 授予权限以修改ACL账号备注。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:aclaccount:modify | | dcs:aclaccount:delete | 授予权限以删除ACL账号。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:whitelist:modify | 授予权限以设置IP白名单分组。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:whitelist:list | 授予权限以查询指定实例的IP白名单。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:getBackgroundTask | 授予权限以查询后台任务列表。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:deleteBackgroundTask | 授予权限以删除后台任务。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:createDiagnosisTask | 授予权限以诊断实例。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:diagnosis | | dcs:instance:listDiagnosisTask | 授予权限以查询实例诊断任务列表。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:diagnosis | | dcs:instance:getDiagnosisTask | 授予权限以查询实例诊断详情。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:diagnosis | | dcs:instance:deleteDiagnosisTask | 授予权限以删除诊断记录。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:diagnosis | | dcs:template:list | 授予权限以查询参数模板列表。 | List | - | - | - | | dcs:template:create | 授予权限以创建自定义模板。 | Write | - | - | - | | dcs:template:get | 授予权限以查询参数模板。 | Read | - | - | - | | dcs:template:modify | 授予权限以修改自定义参数模板。 | Write | - | - | - | | dcs:template:delete | 授予权限以删除自定义参数模板。 | Write | - | - | - | | dcs:tag:list | 授予权限以查询租户所有标签。 | List | - | - | - | | dcs:tag:modify | 授予权限以批量添加或删除标签。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:tag:modify | 授予权限以批量添加或删除标签。 | Write | - | - [g:RequestTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:TagKeys](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:tag:get | 授予权限以查询单个实例标签。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:tag:get | 授予权限以查询单个实例标签。 | Read | - | - [g:RequestTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:TagKeys](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:redisLog:get | 授予权限以获取日志下载链接。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:quota:get | 授予权限以查询租户配额。 | Read | - | - | - | | dcs:auditLog:get | 授予权限以查看实例审计日志。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:auditlog:get | | dcs:auditLog:modify | 授予权限以开启或关闭实例审计日志。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:auditlog:modify | | dcs:instance:webcli | 授予权限以使用WebCli连接Redis实例。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:clientIpTrans:modify | 授予权限以开启或关闭客户端ip透传。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:clientiptrans:modify | | dcs:clients:list | 授予权限以查询Redis会话列表。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:clients:kill | 授予权限以Kill Redis会话。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:ssl:get | 授予权限以获取SSL证书信息。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:ssl:modifyConfigure | 授予权限以修改SSL开关配置。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:ssl:modify | | dcs:ssl:download | 授予权限以下载SSL证书。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:ssl:modify | | dcs:job:get | 授予权限以获取前置任务检查结果。 | Read | - | - | - | | dcs:task:list | 授予权限以获取后台任务列表。 | List | - | - | - | | dcs:task:delete | 授予权限以删除后台任务记录。 | Write | - | - | - | | dcs::ListServiceAgency | 授予权限查看委托信息。 | List | - | - | dcs:instance:create | | dcs::createServiceAgency | 授予权限以创建委托。 | Write | - | - | dcs:instance:create | | dcs:bandwidth:get | 授予权限以查询缓存实例带宽。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:bandwidth:modify | 授予权限以修改缓存实例带宽。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:bindPublicIp | 授予权限以DCS实例绑定公网IP。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:unbindPublicIp | 授予权限以DCS实例解绑公网IP。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:modifySlavePriority | 授予权限以修改DCS实例从节点权重。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:modifyBandwidth | 授予权限以临时修改DCS实例带宽。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:modifyPublicDns | 授予权限以开启/关闭DCS实例公网域名解析。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:publicdomainname:update | | dcs:instance:modifyDomainName | 授予权限以修改DCS实例域名。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:domainname:rebuild | | dcs:instance:removeIpFromDomainName | 授予权限以将只读副本的IP从域名中摘除。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:deleteDomainName | 授予权限以释放DCS实例域名。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:histroydomainname:release | | dcs:instance:closeActiveActive | 授予权限以关闭实例跨局点多活。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:openActiveActive | 授予权限以开启实例跨局点多活。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:updateAvailableZones | 授予权限以变更DCS实例可用区。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:modify | | dcs:instance:modifyBackupPolicy | 授予权限以更新DCS实例备份策略。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [dcs:backupEnabled] | dcs:instance:modify | | dcs:instance:updateInstanceAttribute | 授予权限以更新DCS实例相关的属性。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [dcs:backupEnabled] | dcs:instance:modify | | dcs:instance:modifyNodeStatus | 授予权限以操作实例节点开机/关机。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:analyzeOfflineKey | 授予权限以执行实例离线全量key分析。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:deleteOfflineKeyAnalysisTask | 授予权限以删除实例离线全量key分析任务。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:getOfflineKeyAnalysisTask | 授予权限以查询实例离线全量key分析详情。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | dcs:instance:analyze | | dcs:instance:listOfflineKeyAnalysisTask | 授予权限以查询实例离线全量key分析列表。 | List | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:downloadOfflineKeyAnalysisResult | 授予权限以下载实例离线全量key分析结果。 | Read | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:scalingPolicy:create | 授予权限以创建弹性规则。 | Write | - | - | - | | dcs:scalingPolicy:get | 授予权限以查询弹性规则详情。 | Read | - | - | - | | dcs:scalingPolicy:list | 授予权限以查询弹性规则列表。 | Read | - | - | - | | dcs:scalingPolicy:modify | 授予权限以修改弹性规则。 | Write | - | - | - | | dcs:scalingPolicy:delete | 授予权限以删除弹性规则。 | Write | - | - | - | | dcs:scalingPolicy:attach | 授予权限以绑定弹性规则。 | Write | - | - | - | | dcs:scalingPolicy:detach | 授予权限以解绑弹性规则。 | Write | - | - | - | | dcs:instance:switchNetwork | 授予权限以切换实例网络。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:upgrade | 授予权限以升级实例版本。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | | dcs:instance:cancelResizeTask | 授予权限以取消实例规格变更任务。 | Write | instance \* | - [g:EnterpriseProjectId](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) - [g:ResourceTag/\](https://support.huaweicloud.com/usermanual-iam5/iam_01_1287.html) | - | DCS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 | |:---|:---|:---| | POST /v2/{project_id}/instances | dcs:instance:create | - vpc:ports:get - vpc:ports:create - vpc:ports:update - vpc:ports:delete - vpc:subnets:get - vpc:securityGroupRules:get - vpc:securityGroups:get | | GET /v2/{project_id}/instances | dcs:instance:list | - | | DELETE /v2/{project_id}/instances | dcs:instance:delete | - vpc:ports:get - vpc:ports:create - vpc:ports:update - vpc:ports:delete - vpc:subnets:get | | GET /v2/{project_id}/instances/{instance_id} | dcs:instance:get | - | | DELETE /v2/{project_id}/instances/{instance_id} | dcs:instance:delete | - vpc:ports:get - vpc:ports:create - vpc:ports:update - vpc:ports:delete - vpc:subnets:get | | PUT /v2/{project_id}/instances/{instance_id} | dcs:instance:modify | - vpc:ports:get - vpc:ports:update | | POST /v2/{project_id}/instances/{instance_id}/resize | dcs:instance:scale | - vpc:ports:get - vpc:ports:create - vpc:ports:update - vpc:ports:delete - vpc:subnets:get - vpc:securityGroupRules:get - vpc:securityGroups:get | | POST /v2/{project_id}/instances/{instance_id}/resize/check-job | dcs:instance:scale | - | | POST /v2/{project_id}/instances/{instance_id}/swap | dcs:instance:swap | - | | PUT /v2/{project_id}/instances/{instance_id}/password | dcs:instance:modifyAuthInfo | - | | POST /v2/{project_id}/instances/{instance_id}/password/reset | dcs:instance:modifyAuthInfo | - | | GET /v2/{project_id}/instances/status | dcs:instance:list | - | | PUT /v2/{project_id}/instances/status | dcs:instance:modifyStatus | - | | GET /v2/{project_id}/instances/statistic | dcs:instance:list | - | | POST /v2/{project_id}/instances/{instance_id}/groups/{group_id}/replications/{node_id}/slave-priority | dcs:instance:modify | - | | DELETE /v2/{project_id}/instances/{instance_id}/groups/{group_id}/replications/{node_id}/remove-ip | dcs:instance:delete | - | | GET /v2/{project_id}/instance/{instance_id}/groups | dcs:instance:get | - | | GET /v2/{project_id}/instances/{instance_id}/configs | dcs:instance:getConfiguration | - | | PUT /v2/{project_id}/instances/{instance_id}/configs | dcs:instance:modifyConfiguration | - | | PUT /v2/{project_id}/instances/{instance_id}/async-configs | dcs:instance:modifyConfiguration | - | | DELETE /v2/{project_id}/instances/{instance_id}/backups/{backup_id} | dcs:instance:deleteDataBackupFile | - | | POST /v2/{project_id}/instances/{instance_id}/restores | dcs:instance:restoreData | - | | GET /v2/{project_id}/instances/{instance_id}/restores | dcs:instance:getDataRestoreLog | - | | POST /v2/{project_id}/instances/{instance_id}/backups/{backup_id}/links | dcs:instance:downloadBackupData | - | | POST /v2/{project_id}/instances/{instance_id}/backups | dcs:instance:backupData | - | | GET /v2/{project_id}/instances/{instance_id}/backups | dcs:instance:getDataBackupLog | - | | POST /v2/{project_id}/migration-task | dcs:migrationTask:create | - | | GET /v2/{project_id}/migration-tasks | dcs:migrationTask:list | - | | DELETE /v2/{project_id}/migration-tasks/delete | dcs:migrationTask:delete | - | | GET /v2/{project_id}/migration-task/{task_id} | dcs:migrationTask:get | - | | POST /v2/{project_id}/migration-task/{task_id}/stop | dcs:migrationTask:modify | - | | GET /v2/{project_id}/migration-task/{task_id}/stats | dcs:migrationTask:get | - | | POST /v2/{project_id}/migration/instance | dcs:migrationTask:create | - | | POST /v2/{project_id}/migration/{task_id}/task | dcs:migrationTask:modify | - | | POST /v2/{project_id}/migration-task/batch-stop | dcs:migrationTask:modify | - | | POST /v2/{project_id}/migration-task/{task_id}/sync-stop | dcs:migrationTask:modify | - | | GET /v2/{project_id}/dcs/tags | dcs:tag:list | - | | POST /v2/{project_id}/dcs/{instance_id}/tags/action | dcs:tag:modify | - | | GET /v2/{project_id}/instances/{instance_id}/tags | dcs:tag:get | - | | GET /v2/{project_id}/instances/{instance_id}/bigkey-tasks | dcs:instance:listBigKey | - | | PUT /v2/{project_id}/instances/{instance_id}/bigkey/autoscan | dcs:instance:updateBigKeyAutoScanConfig | - | | GET /v2/{project_id}/instances/{instance_id}/bigkey/autoscan | dcs:instance:getBigKeyAutoScanConfig | - | | POST /v2/{project_id}/instances/{instance_id}/hotkey-task | dcs:instance:analyzeHotKey | - | | GET /v2/{project_id}/instances/{instance_id}/hotkey-tasks | dcs:instance:listHotKey | - | | GET /v2/{project_id}/instances/{instance_id}/hotkey-task/{hotkey_id} | dcs:instance:getHotKey | - | | DELETE /v2/{project_id}/instances/{instance_id}/hotkey-task/{hotkey_id} | dcs:instance:deleteHotKeyScanTask | - | | PUT /v2/{project_id}/instances/{instance_id}/hotkey/autoscan | dcs:instance:updateHotKeyAutoScanConfig | - | | GET /v2/{project_id}/instances/{instance_id}/hotkey/autoscan | dcs:instance:getHotKeyAutoScanConfig | - | | POST /v2/{project_id}/instances/{instance_id}/scan-expire-keys-task | dcs:instance:analyzeExpiredKey | - | | GET /v2/{project_id}/instances/{instance_id}/auto-expire/histories | dcs:instance:getAutoExpiredKeyScanTask | - | | POST /v2/{project_id}/instances/{instance_id}/auto-expire/scan | dcs:instance:analyzeExpiredKey | - | | GET /v2/{project_id}/instances/{instance_id}/scan-expire-keys/autoscan-config | dcs:instance:getExpiredKeyScanConfig | - | | PUT /v2/{project_id}/instances/{instance_id}/scan-expire-keys/autoscan-config | dcs:instance:updateExpiredKeyScanConfig | - | | GET /v2/{project_id}/instances/{instance_id}/slowlog | dcs:slowlog:list | - | | GET /v2/{project_id}/instances/{instance_id}/redislog | dcs:redisLog:get | - | | POST /v2/{project_id}/instances/{instance_id}/redislog | dcs:redisLog:get | - | | POST /v2/{project_id}/instances/{instance_id}/redislog/{id}/links | dcs:redisLog:get | - | | POST /v2/{project_id}/instances/{instance_id}/accounts | dcs:aclaccount:create | - | | GET /v2/{project_id}/instances/{instance_id}/accounts | dcs:aclaccount:list | - | | PUT /v2/{project_id}/instances/{instance_id}/accounts/{account_id}/password/modify | dcs:aclaccount:modify | - | | PUT /v2/{project_id}/instances/{instance_id}/accounts/{account_id}/password/reset | dcs:aclaccount:modify | - | | PUT /v2/{project_id}/instances/{instance_id}/accounts/{account_id} | dcs:aclaccount:modify | - | | PUT /v2/{project_id}/instances/{instance_id}/accounts/{account_id}/role | dcs:aclaccount:modify | - | | DELETE /v2/{project_id}/instances/{instance_id}/accounts/{account_id} | dcs:aclaccount:delete | - | | PUT /v2/{project_id}/instance/{instance_id}/whitelist | dcs:whitelist:modify | - | | GET /v2/{project_id}/instance/{instance_id}/whitelist | dcs:whitelist:list | - | | GET /v2/{project_id}/instances/{instance_id}/tasks | dcs:instance:getBackgroundTask | - | | DELETE /v2/{project_id}/instances/{instance_id}/tasks/{task_id} | dcs:instance:deleteBackgroundTask | - | | GET /v2/{project_id}/quota | dcs:quota:get | - | | GET /v2/{project_id}/dims/monitored-objects/{instance_id} | dcs:instance:get | - | | GET /v2/{project_id}/dims/monitored-objects | dcs:instance:list | - | | POST /v2/{project_id}/instances/{instance_id}/diagnosis | dcs:instance:createDiagnosisTask | - | | GET /v2/{project_id}/instances/{instance_id}/diagnosis | dcs:instance:listDiagnosisTask | - | | GET /v2/{project_id}/diagnosis/{report_id} | dcs:instance:getDiagnosisTask | - | | DELETE /v2/{project_id}/instances/{instance_id}/diagnosis | dcs:instance:deleteDiagnosisTask | - | | GET /v2/{project_id}/config-templates | dcs:template:list | - | | POST /v2/{project_id}/config-templates | dcs:template:create | - | | GET /v2/{project_id}/config-templates/{template_id} | dcs:template:get | - | | DELETE /v2/{project_id}/config-templates/{template_id} | dcs:template:delete | - | | PUT /v2/{project_id}/config-templates/{template_id} | dcs:template:modify | - | | GET /v2/{project_id}/instances-logical-nodes | dcs:instance:list | - | | GET /v2/{project_id}/instances/{instance_id}/config-histories | dcs:instance:get | - | | PUT /v2/{project_id}/instances/{instance_id}/bandwidth | dcs:instance:modify | - | | PUT /v2/{project_id}/instances/{instance_id}/async-swap | dcs:instance:swap | - | | GET /v2/{project_id}/instances/{instance_id}/operations | dcs:instance:get | - | | POST /v2/{project_id}/instances/{instance_id}/webcli/auth | dcs:instance:webcli | - | | POST /v2/{project_id}/instances/{instance_id}/webcli/command | dcs:instance:webcli | - | | POST /v2/{project_id}/instances/{instance_id}/webcli/logout | dcs:instance:webcli | - | | PUT /v2/{project_id}/{instance_id}/client-ip-transparent-transmission | dcs:clientIpTrans:modify | - | | GET /v2/{project_id}/instances/{instance_id}/bigkey-task/{bigkey_id} | dcs:instance:getBigKey | - | | DELETE /v2/{project_id}/instances/{instance_id}/bigkey-task/{bigkey_id} | dcs:instance:deleteBigKeyScanTask | - | | POST /v2/{project_id}/instances/{instance_id}/clients | dcs:clients:list | - | | GET /v2/{project_id}/instances/{instance_id}/clients | dcs:clients:list | - | | POST /v2/{project_id}/instances/{instance_id}/clients/kill | dcs:clients:kill | - | | POST /v2/{project_id}/instances/{instance_id}/clients/kill-all | dcs:clients:kill | - | | GET /v2/{project_id}/instances/{instance_id}/config-histories/{history_id} | dcs:instance:get | - | | GET /v2/{project_id}/instances/{instance_id}/deletable-replication | dcs:instance:scale | - | | POST /v2/{project_id}/instances/export | dcs:instance:list | - | | GET /v2/{project_id}/instance/{instance_id}/groups/{group_id}/group-nodes-state | dcs:instance:get | - | | POST /v2/{project_id}/instance/{instance_id}/groups/{group_id}/replications/{node_id}/async-switchover | dcs:instance:swap | - | | GET /v2/{project_id}/instances/{instance_id}/ssl | dcs:ssl:get | - | | PUT /v2/{project_id}/instances/{instance_id}/ssl | dcs:ssl:modify | - | | POST /v2/{project_id}/instances/{instance_id}/ssl-certs/download | dcs:ssl:modify | - | | GET /v2/{project_id}/instances/{instance_id}/tasks/{task_id}/progress | dcs:instance:getBackgroundTask | - | | GET /v2/{project_id}/instances/export-job | dcs:instance:exportListFile | - | | GET /v2/{project_id}/jobs/{job_id} | dcs:job:get | - | | PUT /v2/{project_id}/migration-task/{task_id} | dcs:migrationTask:modify | - | | POST /v2/{project_id}/migration-task/{task_id}/exchange-ip | dcs:migrationTask:modify | - | | POST /v2/{project_id}/orders/instances/{instance_id}/resize | dcs:instance:scale | - | | GET /v2/{project_id}/tasks | dcs:task:list | - | | DELETE /v2/{project_id}/tasks/{task_id} | dcs:task:delete | - | | GET /v2/{project_id}/migration-task/{task_id}/logs | dcs:migrationTask:get | - | #### 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。 DCS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3DCS支持的资源类型 | 资源类型 | URN | |:---|:---| | instance | dcs:\:\:instance:\ | | migrationTask | dcs:\:\:migrationTask:\ | #### 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dcs:）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)。 **DCS支持的服务级条件键** DCS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4DCS支持的服务级条件键 | 服务级条件键 | 类型 | 单值/多值 | 说明 | |:---|:---|:---|:---| | dcs:backupEnabled | boolean | 单值 | 对DCS实例开启自动备份进行权限控制。 |