Create a node pool - API Reference| Alibaba Cloud Documentation Center

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Request syntax

POST /clusters/ClusterId/nodepools HTTP/1.1 
Content-Type:application/json
{
  "auto_scaling" : {
    "enable" : Boolean,
    "max_instances" : Long,
    "min_instances" : Long,
    "type" : "String",
    "is_bond_eip" : Boolean,
    "eip_internet_charge_type" : "String",
    "eip_bandwidth" : Long
  },
  "kubernetes_config" : {
    "cms_enabled" : Boolean,
    "cpu_policy" : "String",
    "labels" : [ {
      "key" : "String",
      "value" : "String"
    } ],
    "runtime" : "String",
    "runtime_version" : "String",
    "taints" : [ {
      "key" : "String",
      "value" : "String",
      "effect" : "String"
    } ],
    "user_data" : "String"
  },
  "nodepool_info" : {
    "name" : "String",
    "resource_group_id" : "String"
  },
  "scaling_group" : {
    "auto_renew" : Boolean,
    "auto_renew_period" : Long,
    "data_disks" : [ {
      "category" : "String",
      "size" : Long,
      "encrypted" : "String",
      "auto_snapshot_policy_id" : "String"
    } ],
    "image_id" : "String",
    "instance_charge_type" : "String",
    "instance_types" : [ "String" ],
    "key_pair" : "String",
    "login_password" : "String",
    "period" : Long,
    "period_unit" : "String",
    "platform" : "String",
    "rds_instances" : [ "String" ],
    "spot_strategy" : "String",
    "spot_price_limit" : [ {
      "instance_type" : "String",
      "price_limit" : "String"
    } ],
    "scaling_policy" : "String",
    "security_group_id" : "String",
    "system_disk_category" : "String",
    "system_disk_size" : Long,
    "tags" : [ {
      "key" : "String",
      "value" : "String"
    } ],
    "vswitch_ids" : [ "String" ],
    "multi_az_policy" : "String",
    "on_demand_base_capacity" : Long,
    "on_demand_percentage_above_base_capacity" : Long,
    "spot_instance_pools" : Long,
    "spot_instance_remedy" : Boolean,
    "compensate_with_on_demand" : Boolean
  },
  "tee_config" : {
    "tee_enable" : Boolean
  },
  "management" : {
    "enable" : Boolean,
    "auto_repair" : Boolean,
    "upgrade_config" : {
      "auto_upgrade" : Boolean,
      "surge" : Long,
      "surge_percentage" : Long,
      "max_unavailable" : Long
    }
  },
  "count" : Long
}

Request parameters

Table 1. Request path parameters
Parameter	Type	Required	Example	Description
ClusterId	String	Yes	c61da77e8bfbc4c4c999af2b51b65****	The ID of the ACK cluster.

Table 2. Request body parameters
Parameter	Type	Required	Example	Description
auto_scaling	Object	No		The configuration of auto scaling.
enable	Boolean	Yes	true	Specifies whether to enable auto scaling. Valid values: `true`: enables auto scaling. `false`: disables auto scaling. If you set this parameter to false, other parameters in the `auto_scaling` section do not take effect. Default value: `false`.
max_instances	Long	Yes	10	The maximum number of Elastic Compute Service (ECS) instances in the scaling group.
min_instances	Long	Yes	1	The minimum number of ECS instances in the scaling group.
type	String	No	cpu	The instance types that can be used for the auto scaling of the node pool. Valid values: `cpu`: regular instance. `gpu`: GPU-accelerated instance. `gpushare`: shared GPU-accelerated instance. `spot`: preemptible instance. Default value: `cpu`.
is_bond_eip	Boolean	No	true	Specifies whether to associate an elastic IP address (EIP) with the node pool. Valid values: `true`: associates an EIP with the node pool. `false`: does not associate an EIP with the node pool. Default value: `false`.
eip_internet_charge_type	String	No	PayByBandwidth	The billing method of the EIP. Valid values: `PayByBandwidth`: pay-by-bandwidth. `PayByTraffic`: pay-by-data-transfer. Default value: `PayByBandwidth`.
eip_bandwidth	Long	No	5	The peak bandwidth of the EIP.
kubernetes_config	Object	No		The configurations of the ACK cluster.
cms_enabled	Boolean	No	true	Specifies whether to install the CloudMonitor agent on ECS nodes. After the CloudMonitor agent is installed on ECS nodes, you can view monitoring information about the instances in the CloudMonitor console. We recommend that you install the CloudMonitor agent. Valid values: `true`: installs the CloudMonitor agent on ECS nodes. `false`: does not install the CloudMonitor agent on ECS nodes Default value: `false`.
cpu_policy	String	No	none	The CPU policy. The following policies are supported if the Kubernetes version of the cluster is 1.12.6 or later. `static`: This policy allows pods with specific resource characteristics on the node to be granted with enhanced CPU affinity and exclusivity. `none`: This policy indicates that the default CPU affinity is used. Default value: `none`.
labels	Array of tag	No		You can add labels to nodes that are added to the cluster.
runtime	String	Yes	docker	The name of the container runtime.
runtime_version	String	Yes	19.03.5	The version of the container runtime.
taints	Array of taint	No		The taints of the nodes.
user_data	String	No	dGhpcyBpcyBhIGV4YW1wbGU=	The user-defined data.
nodepool_info	Object	No		The configurations of the node pool.
name	String	Yes	cluster-demo	The name of the node pool.
resource_group_id	String	No	rg-acfmyvw3wjmb****	The ID of the resource group to which the node pool belongs.
scaling_group	Object	No		The configurations of the scaling group used by the node pool.
auto_renew	Boolean	No	true	Specifies whether to enable auto-renewal for nodes in the node pool. This parameter takes effect only when `instance_charge_type` is set to `PrePaid`. Valid values: `true`: enables auto-renewal. `false`: disables auto-renewal. Default value: `true`.
auto_renew_period	Long	No	1	The auto-renewal period for nodes in the node pool. This parameter takes effect and is required only when instance_charge_type is set to PrePaid and auto_renew is set to true. If `PeriodUnit=Month` is configured, the valid values are: 1, 2, 3, 6, and 12. Default value: 1
data_disks	Array of data_disk	No		The configurations of data disks.
image_id	String	No	aliyun_2_1903_x64_20G_alibase_20200529.vhd	The ID of a custom image. By default, the image provided by ACK is used.
instance_charge_type	String	Yes	PrePaid	The billing method of nodes in the node pool. Valid values: `PrePaid`: subscription. `PostPaid`: pay-as-you-go. Default value: `PostPaid`.
instance_types	Array of String	Yes	ecs.d1ne.2xlarge	The ECS instance types of the nodes.
key_pair	String	No	np-key-name	The name of the key pair used to log on to the nodes. You must set key_pair or `login_password`. Note Note: If you want to create a managed node pool, you must set `key_pair`.
login_password	String	No	Hello1234	The password used to log on to the nodes by using SSH. You must set `key_pair` or login_password. The password must be 8 to 30 characters in length, and must contain at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters.
period	Long	No	1	The subscription period of nodes in the node pool. This parameter takes effect and is required only when instance_charge_type is set to `PrePaid`. If `PeriodUnit=Month` is configured, Period `the valid values are: 1, 2, 3, 6, and 12. Default value: 1.`
period_unit	String	No	Month	The unit of the subscription period of nodes in the node pool. This parameter is required if you set instance_charge_type to `PrePaid`. A value of Month specifies that the subscription period is measured in months.
platform	String	Yes	Linux	The release version of the operating system. Valid values: `CentOS` `AliyunLinux` `Windows` `WindowsCore` Default value: `AliyunLinux`.
rds_instances	Array of String	No	rds-****	The IDs of the ApsaraDB RDS instances.
spot_strategy	String	No	NoSpot	The type of preemptible instance. Valid values: `NoSpot`: non-preemptible instance. `SpotWithPriceLimit`: specifies the highest bid for a preemptible instance. `SpotAsPriceGo`: automatically submits bids based on the up-to-date market price. For more information, see Preemptible instances.
spot_price_limit	Array	No		The instance type for preemptible instances and the price limit of the instance type.
instance_type	String	No	ecs.c6.large	The instance type for preemptible instances.
price_limit	String	No	0.39	The price limit of a preemptible instance. Unit: USD/hour.
scaling_policy	String	No	release	The scaling mode of the scaling group. Valid values: `release`: the standard mode. ECS instances are created and released based on the resource usage. `recycle`: the swift mode. ECS instances are created, stopped, or started during scaling events. This reduces the time required for the next scale-out event. When the instance is stopped, you are charged only for the storage service. This does not apply to ECS instances attached with local disks. Default value:`release`.
security_group_id	String	Yes	sg-wz9a8g2mt6x5llu0****	The ID of the security group to which the nodes belong.
system_disk_category	String	Yes	cloud_efficiency	The type of system disk. Valid values: `cloud_efficiency`: ultra disk. `cloud_ssd`: standard SSD. `cloud_essd`: enhanced SSD. Default value: `cloud_efficiency`.
system_disk_size	Long	Yes	120	The system disk size of a node. Unit: GiB. Valid values: 40 to 500.
tags	Array	No		Adds labels only to ECS instances. A key must be unique and cannot exceed 128 characters in length. Neither keys nor values can start with aliyun or acs:. Neither keys nor values can contain https:// or http://.
key	String	No	node-k-1	The name of the label.
value	String	No	node-v-1	The value of the label.
vswitch_ids	Array of String	Yes	vsw-wz9mfnhmssud6eicu****	The IDs of vSwitches.
multi_az_policy	String	No	COST_OPTIMIZED	The scaling policy of ECS instances in a multi-zone scaling group. Valid values: `PRIORITY`: the scaling group is scaled based on the VSwitchIds.N parameter. When ECS instances cannot be created in the zone where the vSwitch with the highest priority is deployed, the system attempts to create ECS instances in the zone where the vSwitch with the next highest priority is deployed. `COST_OPTIMIZED`: ECS instances are created based on the unit price of vCPUs in ascending order. Preemptible instances are preferably created when multiple instance types are specified in the scaling configurations. You can set the `CompensateWithOnDemand` parameter to specify whether to automatically create pay-as-you-go instances when preemptible instances cannot be created due to insufficient inventory. Note `COST_OPTIMIZED` takes effect only when multiple instance types are specified or at least one instance type is specified for preemptible instances. `BALANCE`: ECS instances are evenly distributed across multiple zones specified by the scaling group. If ECS instances are not evenly distributed across multiple zones due to insufficient inventory, you can call the RebalanceInstances operation to balance the instance distribution among zones. Default value: `PRIORITY`.
on_demand_base_capacity	Long	No	0	The minimum number of pay-as-you-go instances that must be kept in the scaling group. Valid values: 0 to 1000. When the number of pay-as-you-go instances is lower than this value, pay-as-you-go instances are preferably created to meet the required number.
on_demand_percentage_above_base_capacity	Long	No	20	The percentage of pay-as-you-go instances among the extra instances that exceed the number specified by `on_demand_base_capacity`. Valid values: 0 to 100.
spot_instance_pools	Long	No	5	The number of available instance types. The scaling group creates preemptible instances of multiple instance types at the lowest cost. Valid values: 1 to 10.
spot_instance_remedy	Boolean	No	false	Specifies whether to supplement preemptible instances. If this parameter is set to true, when the scaling group receives a system message that a preemptible instance is to be reclaimed, the scaling group attempts to create a new instance to replace this instance. Valid values: `true`: supplements preemptible instances. `false`: does not supplement preemptible instances.
compensate_with_on_demand	Boolean	No	true	Specifies whether to automatically create pay-as-you-go instances to meet the required number of ECS instances if preemptible instances cannot be created due to reasons such as the cost or insufficient inventory. This parameter takes effect when `multi_az_policy` is set to `COST_OPTIMIZED`. Valid values: `true`: automatically creates pay-as-you-go instances to meet the required number of ECS instances if preemptible instances cannot be created. `false`: does not create pay-as-you-go instances to meet the required number of ECS instances if preemptible instances cannot be created.
tee_config	Object	No		The configurations of confidential computing.
tee_enable	Boolean	Yes	true	Specifies whether to enable confidential computing for the cluster.
management	Object	No		The configurations of the managed node pool.
enable	Boolean	Yes	false	Specifies whether to enable managed node pools. Valid values: `true`: enables managed node pools. `false`: disables managed node pools. The other parameters in this section take effect only when enable=true is specified.
auto_repair	Boolean	No	false	Specifies whether to enable auto repairing. This parameter takes effect only when `enable=true` is specified. `true`: enables auto repairing. `false`: disables auto repairing.
upgrade_config	Object	No		The configurations of auto upgrading. The configurations take effect only when `enable=true` is specified.
auto_upgrade	Boolean	No	false	Specifies whether to enable auto upgrading. Valid values: `true`: enables auto upgrading. `false`: disables auto upgrading.
surge	Long	No	0	The number of extra nodes that can be added to the node pool during an auto upgrade.
surge_percentage	Long	No	0	The ratio of extra nodes to the nodes in the node pool. You must set this parameter or `surge`.
max_unavailable	Long	Yes	0	The maximum number of nodes that can be in the unschedulable state. Valid values: 1 to 1000. Default value: 1.
count	Long	No	1	The number of nodes in the node pool.

Response syntax

HTTP/1.1 200
Content-Type:application/json
{
  "nodepool_id" : "String"
}

Response parameters

Table 3. Response body parameters
Parameter	Type	Example	Description
nodepool_id	String	np31da1b38983f4511b490fc62108a****	The ID of the created node pool.

Examples

Sample requests

POST /clusters/c61da77e8bfbc4c4c999af2b51b65****/nodepools HTTP/1.1 
Content-Type:application/json
{
  "auto_scaling" : {
    "enable" : true,
    "max_instances" : 10,
    "min_instances" : 1,
    "type" : "cpu",
    "is_bond_eip" : true,
    "eip_internet_charge_type" : "PayByBandwidth",
    "eip_bandwidth" : 5
  },
  "kubernetes_config" : {
    "cms_enabled" : true,
    "cpu_policy" : "none",
    "labels" : [ {
      "key" : "env",
      "value" : "prod"
    } ],
    "runtime" : "docker",
    "runtime_version" : "19.03.5",
    "taints" : [ {
      "key" : "key",
      "value" : "value",
      "effect" : "NoSchedule"
    } ],
    "user_data" : "dGhpcyBpcyBhIGV4YW1wbGU="
  },
  "nodepool_info" : {
    "name" : "cluster-demo",
    "resource_group_id" : "rg-acfmyvw3wjmb****"
  },
  "scaling_group" : {
    "auto_renew" : true,
    "auto_renew_period" : 1,
    "data_disks" : [ {
      "category" : "cloud_ssd",
      "size" : 40,
      "encrypted" : "true",
      "auto_snapshot_policy_id" : "sp-2zej1nogjvovnz4z****"
    } ],
    "image_id" : "aliyun_2_1903_x64_20G_alibase_20200529.vhd",
    "instance_charge_type" : "PrePaid",
    "instance_types" : [ "ecs.d1ne.2xlarge" ],
    "key_pair" : "np-key-name",
    "login_password" : "Hello1234",
    "period" : 1,
    "period_unit" : "Month",
    "platform" : "Linux",
    "rds_instances" : [ "rds-***" ],
    "spot_strategy" : "NoSpot",
    "spot_price_limit" : [ {
      "instance_type" : "ecs.c6.large",
      "price_limit" : "0.39"
    } ],
    "scaling_policy" : "release",
    "security_group_id" : "sg-wz9a8g2mt6x5llu0****",
    "system_disk_category" : "cloud_efficiency",
    "system_disk_size" : 120,
    "tags" : [ {
      "key" : "node-k-1",
      "value" : "node-v-1"
    } ],
    "vswitch_ids" : [ "vsw-wz9mfnhmssud6eicu****" ],
    "multi_az_policy" : "COST_OPTIMIZED",
    "on_demand_base_capacity" : 0,
    "on_demand_percentage_above_base_capacity" : 20,
    "spot_instance_pools" : 5,
    "spot_instance_remedy" : false,
    "compensate_with_on_demand" : true
  },
  "tee_config" : {
    "tee_enable" : true
  },
  "management" : {
    "enable" : false,
    "auto_repair" : false,
    "upgrade_config" : {
      "auto_upgrade" : false,
      "surge" : 0,
      "surge_percentage" : 0,
      "max_unavailable" : 0
    }
  },
  "count" : 1
}

Description of the sample request

Create a node pool that has auto scaling enabled:
{
    "ClusterId":"c61da77e8bfbc4c4c999af2b51b65****",
    "nodepool_info":{
        "name":"autoScale-demo",
        "resource_group_id":"rg-acfmyvw3wjm****"
    },
    "scaling_group":{
        "vswitch_ids":[
            "vsw-wz9mfnhmssud6eic****"
        ],
        "system_disk_category":"cloud_efficiency",
        "system_disk_size":120,
        "data_disks":[

        ],
        "instance_types":[
            "ecs.t6-c1m2.large"
        ],
        "vpc_id":"vpc-wz984yvbd6lck22z3****",
        "tags":[

        ],
        "instance_charge_type":"PostPaid",
        "login_password":"****",
        "platform":"AliyunLinux",
        "image_id":"aliyun_2_1903_x64_20G_alibase_20200529.vhd",
        "rds_instances":[

        ],
        "scaling_policy":"release"
    },
    "kubernetes_config":{
        "cpu_policy":"none",
        "cms_enabled":false,
        "labels":[
            {
                "key":"workload_type",
                "value":"cpu"
            }
        ],
        "taints":[

        ],
        "user_data":"",
        "runtime":"docker",
        "runtime_version":"19.03.5"
    },
    "tee_config":{
        "tee_enable":true
    },
    "auto_scaling":{
        "enable":true,
        "max_instances":10,
        "min_instances":1,
        "type":"cpu"
    }
}

Sample success responses

XML format

HTTP/1.1 200 OK
Content-Type:application/xml

<nodepool_id>np31da1b38983f4511b490fc62108a****</nodepool_id>

JSON format

HTTP/1.1 200 OK
Content-Type:application/json

{
  "nodepool_id" : "np31da1b38983f4511b490fc62108a****"
}

Error codes

For a list of error codes, visit the API Error Center.