Creating a Custom Policy for Cloud Services

Function

This API is provided for the administrator to create a custom policy for cloud services.

The API can be called using both the global endpoint and region-specific endpoints. For IAM endpoints, see Regions and Endpoints.

Debugging

You can debug this API in API Explorer.

URI

POST /v3.0/OS-ROLE/roles

Request Parameters

**Table 1** Parameters in the request header
Parameter	Mandatory	Type	Description
Content-Type	Yes	String	Fill application/json;charset=utf8 in this field.
X-Auth-Token	Yes	String	Access token issued to a user to bear its identity and permissions. For details about the permissions required by the token, see Actions.

**Table 2** Parameters in the request body
Parameter	Mandatory	Type	Description
role	Yes	Object	Custom policy information.

**Table 3** role
Parameter	Mandatory	Type	Description
display_name	Yes	String	Display name of the custom policy.
type	Yes	String	Application scope of the custom policy. Global services: AX Region-specific projects: XA Set the display mode of a custom policy to either AX or XA. NOTE: To assign a custom policy that contains OBS operations to a user group, create two custom policies with the scope being set to global services and region-specific projects respectively and other parameters being the same, and then attach the two policies to the user group. To minimize the authorization scope, do not include actions of other cloud services in custom OBS policies.
description	Yes	String	Description of the custom policy.
description_cn	No	String	Description of the custom policy in Chinese.
policy	Yes	Object	Content of the custom policy.

**Table 4** role.policy
Parameter	Mandatory	Type	Description
Version	Yes	String	Policy version. When creating a custom policy, set this parameter to 1.1. NOTE: 1.0: System-defined role. Only a limited number of service-level roles are provided for authorization. 1.1: Policy. A policy defines the permissions required to perform operations on a specific cloud resource under certain conditions.
Statement	Yes	Array of objects	Statement of the policy.

**Table 5** role.policy.Statement
Parameter	Mandatory	Type	Description
Action	Yes	Array of strings	Specific operation permissions on a resource. For details about supported actions, see "Permissions and Supported Actions" in the API Reference of cloud services. NOTE: The value format is Service name:Resource type:Operation, for example, vpc:ports:create. Service name: indicates the product name, such as ecs, evs, or vpc. Only lowercase letters are allowed. Resource types and operations are not case-sensitive. You can use an asterisk (*) to represent all operations. A custom policy (role.policy.Statement) cannot contain actions of both project-level and global services. For details about the scope of service permissions, see System Permissions.
Effect	Yes	String	Effect of the permission. The value can be Allow or Deny. If both Allow and Deny statements are found in a policy, the authentication starts from the Deny statements. Options: Allow Deny
Condition	No	Map<String,Map<String,Array<String>>>	Conditions for the permission to take effect. For details, see Creating a Custom Policy. NOTE: Take the condition in the sample request as an example, the values of the condition key (obs:prefix) and string (public) must be equal (StringEquals). "Condition": { "StringEquals": { "obs:prefix": [ "public" ] } }
Resource	No	Array of strings	Cloud resource. NOTE: Format: ::::. For example, obs:::bucket:. Asterisks are allowed. The region segment can be or a region accessible to the user. The specified resource must belong to the corresponding service that actually exists.

Response Parameters

**Table 6** Parameters in the response body
Parameter	Type	Description
role	Object	Custom policy information.

**Table 7** role
Parameter	Type	Description
catalog	String	Service catalog.
display_name	String	Display name of the custom policy.
description	String	Description of the custom policy.
links	Object	Resource link of the custom policy.
policy	Object	Content of the custom policy.
description_cn	String	Description of a custom policy in Chinese. This parameter is returned in the response only when description_cn is specified in the request.
domain_id	String	Account ID.
type	String	Display mode. NOTE: AX: the global service project XA: region-specific projects Set the display mode of a custom policy to either AX or XA.
id	String	Custom policy ID.
name	String	Name of the custom policy.
updated_time	String	Time when the custom policy was last updated. NOTE: The value is a Unix timestamp in millisecond, for example, 1687913793000.
created_time	String	Time when the custom policy was created. NOTE: The value is a Unix timestamp in millisecond, for example, 1687913793000.

**Table 8** role.links
Parameter	Type	Description
self	String	Resource link.

**Table 9** role.policy
Parameter	Type	Description
Version	String	Policy version. NOTE: 1.0: System-defined role. Only a limited number of service-level roles are provided for authorization. 1.1: Policy. A policy defines the permissions required to perform operations on a specific cloud resource under certain conditions.
Statement	Array of objects	Statement of the policy. A policy can contain a maximum of eight statements.

**Table 10** role.policy.Statement
Parameter	Type	Description
Action	Array of strings	Specific operation permissions on a resource.
Effect	String	Effect of the permission. The value can be Allow or Deny. If both Allow and Deny statements are found in a policy, the authentication starts from the Deny statements. Options: Allow Deny
Condition	Map<String,Map<String,Array<String>>>	Conditions for the permission to take effect. If this parameter is not specified in the request, it will not be returned in the response.
Resource	Array of strings	Cloud resource. If this parameter is not specified in the request, it will not be returned in the response. NOTE: Format: ::::. For example, obs:::bucket:. Asterisks are allowed. The region segment can be or a region accessible to the user. The specified resource must belong to the corresponding service that actually exists.

Example Request

Request to create a custom policy named IAMCloudServicePolicy that allows only projects whose names start with ap-southeast-1 to obtain ACL information about all buckets.

POST https://iam.myhuaweicloud.com/v3.0/OS-ROLE/roles

{
    "role": {
        "display_name": "IAMCloudServicePolicy",
        "type": "AX",
        "description": "IAMDescription",
        "description_cn": "Description in Chinese",
        "policy": {
            "Version": "1.1",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Action": [
                        "obs:bucket:GetBucketAcl"
                    ],
                    "Condition": {
                        "StringStartWith": {
                            "g:ProjectName": [
                                "ap-southeast-1"
                            ]
                        }
                    },
                    "Resource": [
                        "obs:*:*:bucket:*"
                    ]
                }
            ]
        }
    }
}

Example Response

Status code: 201

The custom policy is created successfully.

{
    "role": {
        "catalog": "CUSTOMED",
        "display_name": "IAMCloudServicePolicy",
        "description": "IAMDescription",
        "links": {
            "self": "https://iam.myhuaweicloud.com/v3/roles/93879fd90f1046f69e6e0b31c94d2615"
        },
        "policy": {
            "Version": "1.1",
            "Statement": [
                {
                    "Action": [
                        "obs:bucket:GetBucketAcl"
                    ],
                    "Resource": [
                        "obs:*:*:bucket:*"
                    ],
                    "Effect": "Allow",
                    "Condition": {
                        "StringStartWith": {
                            "g:ProjectName": [
                                "ap-southeast-1"
                            ]
                        }
                    }
                }
            ]
        },
        "description_cn": "Description in Chinese",
        "domain_id": "d78cbac186b744899480f25bd...",
        "type": "AX",
        "id": "93879fd90f1046f69e6e0b31c9...",
        "name": "custom_d78cbac186b744899480f25bd022f468_1"
    }
}