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    ENS:ModifyClusterNodePool

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    ENS:ModifyClusterNodePool

    Last Updated:Mar 31, 2026

    You can call the ModifyClusterNodePool operation to modify node configurations in a cluster node pool, such as kubelet and node rotation configurations. Modifies configurations in batches and restarts the kubelet, which may affect node and workload operations. Perform this operation during off-peak hours.

    Operation description

    • Each user is limited to 10 calls per second.

    • Modifying a node pool is an asynchronous operation. After you call the API, the operation takes 10 to 20 minutes to complete. During this time, you can call the DescribeClustersV1 operation to check the cluster status.

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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

    ens:ModifyClusterNodePool

    update

    *All Resource

    *

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    ClusterId

    string

    Yes

    The cluster ID.

    eck-xxxxxxxx
    NodepoolInfo

    object

    Yes

    The information about the node pool.

    NodepoolId

    string

    Yes

    The node pool ID.

    np68mi5y1dd748ky37ojo2kqdrz
    ScalingGroup

    object

    No

    The configuration of the scaling group.

    Password

    string

    No

    The password for the instance. Specify either this parameter or KeyPairName.

    @AN5Ejx1YyzzK
    KeyPairName

    string

    No

    The key pair for the instance. Specify either this parameter or Password.

    tf-testAcc
    VswitchIds

    array

    No

    The IDs of the vSwitches that the instances use.

    string

    No

    The ID of the vSwitch where the cluster nodes are located. The ENS region of the vSwitch must be the same as the ENS region of the cluster.

    vsw-58eu2p6v64qw8ihhit1wz7wgv
    InstanceChargeType

    string

    No

    The billing method of the instance.

    PostPaid
    InstanceTypes

    array

    No

    The instance types.

    string

    No

    The instance type.

    ens.sn1.small
    SystemDiskCategory

    string

    No

    The type of the system disk.

    cloud_efficiency
    SystemDiskSize

    integer

    No

    The size of the system disk.

    80
    ImageId

    string

    No

    The ID of the instance image.

    m-68bysm5a8gkm7oik7ngacf0in
    DataDisks

    array<object>

    No

    The information about the data disks.

    object

    No

    The information about the data disk.

    Category

    string

    No

    The type of the data disk.

    cloud_efficiency
    Size

    integer

    No

    The size of the data disk.

    40
    KubernetesConfig

    object

    No

    The Kubernetes configuration.

    PreUserData

    string

    No

    The script to run on the instance after it is created but before it joins the cluster. The content must be Base64-encoded.

    ZWNobyBvawo=
    UserData

    string

    No

    The script to run on the instance after it is created and has joined the cluster. The content must be Base64-encoded.

    ZWNobyBvawo=

    Response elements

    Element

    Type

    Description

    Example

    object

    The schema of the response body.

    RequestId

    string

    The request ID.

    C0003E8B-B930-4F59-ADC0-0E209A9012A8

    Examples

    Success response

    JSON format

    {
  "RequestId": "C0003E8B-B930-4F59-ADC0-0E209A9012A8"
}

    Error codes

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.