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Bastionhost:CreateHostShareKey

Last Updated:Jan 21, 2026

Bastionhost provides the shared key feature. This feature allows you to manage the private key that is used to log on to a host in a bastion host. This way, you can associate the private key with multiple accounts of the host to make host account management more efficient.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

yundun-bastionhost:CreateHostShareKey

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

InstanceId

string

Yes

The bastion host ID.

Note

You can call the DescribeInstances operation to query the bastion host ID.

bastionhost-cn-st220aw****

RegionId

string

No

The region ID of the bastion host.

Note

For more information about the mapping between region IDs and region names, see Regions and zones.

cn-hangzhou

HostShareKeyName

string

Yes

The name of the shared key that you want to create. The name can be a maximum of 128 characters in length.

name

PrivateKey

string

Yes

The private key. The value is a Base64-encoded string.

Note

You can specify a Rivest-Shamir-Adleman (RSA) key that is generated by using the ssh-keygen command or a key that is generated by using the Ed25519 algorithm.

LBYTnpR3Jmd2hMbmNBMGRmdWV2RW5oVXpCUmp3VkM0dGoKa0J2QlNRSHU2bytrMFBudlZvdlMzdGlBbXo5NkRzdUJDcDFFZVFJREFRQUJBb0lCQUNPZGNjK0lGUnNJd3VkYQpjT3VOSm5SK1BxWnlNZGVIaWFOcDc4SUxFd2NLZDNMZmlUWlYxc0d2Q21uTW0vQ3ZiS2NrZ0U1VjZxQVExRGZQCnI******

PassPhrase

string

No

The password of the private key. The value is a Base64-encoded string.

MTIzN******

Response elements

Element

Type

Description

Example

object

Schema of Response

RequestId

string

The ID of the request, which is used to locate and troubleshoot issues.

EC9BF0F4-8983-491A-BC8C-1B4DD94976DE

HostShareKeyId

integer

The ID of the shared key.

10235

Examples

Success response

JSON format

{
  "RequestId": "EC9BF0F4-8983-491A-BC8C-1B4DD94976DE",
  "HostShareKeyId": 10235
}

Error codes

HTTP status code

Error code

Error message

Description

400 HostShareKeyAlreadyExists The host share key already exists.
400 InvalidParameter The argument is invalid. The argument is invalid.
500 InternalError An unknown error occurred. An unknown error occurred.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.