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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.

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

Token with Security Administrator permissions.
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

Display mode.

NOTE:
  • AX: Account level.
  • XA: Project level.
  • The display mode of a custom policy can only be AX or XA. A custom policy must be displayed at either of the two levels.

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. A policy can contain a maximum of eight statements.
Table 5 role.policy.Statement

Parameter

Mandatory

Type

Description

Action

Yes

Array of strings

Specific operation permission on a resource. A maximum of 100 actions are allowed.

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. A maximum of 10 conditions are allowed. For details about the condition parameters, 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. The array can contain a maximum of 10 resource strings, and each string cannot exceed 128 characters.

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 the custom policy in Chinese.

domain_id

String

Account ID.

type

String

Display mode.

NOTE:
  • AX: Account level.
  • XA: Project level.
  • The display mode of a custom policy can only be AX or XA. A custom policy must be displayed at either of the two levels.

id

String

Custom policy ID.

name

String

Name of the custom policy.

updated_time

String

Time when the custom policy was last updated.

created_time

String

Time when the custom policy was created.

references

String

Number of references.
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

Mandatory

Type

Description

Action

Yes

Array of strings

Specific operation permission on a resource. A maximum of 100 actions are allowed.

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.

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. A maximum of 10 conditions are allowed. For details about the condition parameters, 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. The array can contain a maximum of 10 resource strings, and each string cannot exceed 128 characters.

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

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": [
                                "cn-north-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": [
                                "cn-north-1"
                            ]
                        }
                    }
                }
            ]
        },
        "description_cn": "Description in Chinese",
        "domain_id": "d78cbac186b744899480f25bd...",
        "type": "AX",
        "id": "93879fd90f1046f69e6e0b31c9...",
        "name": "custom_d78cbac186b744899480f25bd022f468_1"
    }
}

Status Codes

Status Code

Description

201

The custom policy is created successfully.

400

Invalid parameters.

401

Authentication failed.

403

Access denied.

500

Internal server error.

Error Codes

None

Parent topic: Custom Policy Management