CCE Cloud Bursting Engine for CCI

Add-on Overview

The virtual-kubelet add-on is an implementation of the open-source Virtual Kubelet project. When momentary traffic spikes occur in CCE clusters, virtual-kubelet uses Huawei Cloud CCI to create pods for Deployments, StatefulSets, and jobs, eliminating the overhead of resizing CCE clusters. For details, see virtual kubelet.

Add-on Parameters

**Table 1** Parameters
Parameter	Mandatory	Type	Description
basic	Yes	Table 2 object	Basic add-on configuration parameters
flavor	Yes	Table 3 object	Flavor parameters
custom	Yes	Table 4 object	Custom parameters

**Table 2** basic
Parameter	Mandatory	Type	Description
available_zone	Yes	String	AZ where the add-on is deployed. Example: cn-north-4a
cci_address	Yes	String	Access address and port number of CCI. Example: https://cci..com:443*
euleros_version	Yes	String	EulerOS version. The value is fixed at 2.2.5.
iam_address	Yes	String	Access address and port number of IAM. Example: https://iam..com:443*
swr_addr	Yes	String	Access address of SWR. Example: swr..com*
swr_user	Yes	String	SWR user name. The default value is hwofficial.
rbac_enabled	Yes	String	Whether RBAC is supported. If RBAC is supported, the value is true.
cluster_id	Yes	String	Cluster ID
cluster_name	Yes	String	Cluster name
vpc_id	Yes	String	VPC ID
network_id	Yes	String	Subnet ID
security_group_id	Yes	String	Security group ID
project_id	Yes	String	Project ID
region	Yes	String	Region Example: cn-north-4

**Table 3** flavor
Parameter	Mandatory	Type	Description
description	No	String	Add-on description
name	No	String	Add-on specification name
replicas	Yes	String	Number of pods. The default value is 1.
resources	No	resources object	Container resource (CPU and memory) quotas

**Table 4** custom
Parameter	Mandatory	Type	Description
isInstallProxy	No	String	Cross-service interworking. true: Pods in a Cloud Container Engine (CCE) cluster can communicate with pods in a Cloud Container Instance (CCI) cluster through Kubernetes Service.
subnet_id	Yes	String	IPv4 subnet ID
subnets	No	subnet object	Extended subnet configuration

**Table 5** Data structure of the resources field
Parameter	Mandatory	Type	Description
limitsCpu	No	String	CPU size limit (unit: m)
limitsMem	No	String	Memory size limit (unit: Mi)
name	Yes	String	Add-on name
requestsCpu	No	String	Requested CPU size (unit: m)
requestsMem	No	String	Requested memory size (unit: Mi)

**Table 6** Data structure of the subnet field
Parameter	Mandatory	Type	Description
subnetID	Yes	String	ID of the extended IPv4 subnet

Example Request

{
	"metadata": {
		"annotations": {
			"addon.install/type": "install"
		}
	},
	"spec": {
		"clusterID": "ccbe7bdf-4**9-3**b-b**4-0********78",
		"version": "1.5.15",
		"addonTemplateName": "virtual-kubelet",
		"values": {
			"basic": {
                "addon_version": "1.5.15",
				"available_zone": "cn-north-4a",
				"cci_address": "https://cci.***.com:443",
				"euleros_version": "2.2.5",
				"iam_address": "https://iam.***.com:443",
				"swr_addr": "swr.***.com",
				"swr_user": "hwofficial",
				"rbac_enabled": true,
				"cluster_id": "ccbe7bdf-4**9-3**b-b**4-0********78",
				"cluster_name": "test-vk",
				"vpc_id": "2372199f-e6e0-48be-9437-e774aae6bd70",
				"network_id": "863a5e6c-e4f5-45f8-80d9-5090f17a767b",
				"security_group_id": "ac3c1a82-f320-495a-b81d-e7aaa6b304a4",
				"project_id": "085a4*********00a9ccf7fba",
				"region": "cn-north-4"
			},
			"flavor": {
				"description": "Has only one instance",
				"name": "Single",
				"replicas": 1,
                "resources": [
                    {
                        "name": "virtual-kubelet",
                        "limitsCpu": "2000m",
                        "requestsCpu": "500m",
                        "limitsMem": "4096Mi",
                        "requestsMem": "512Mi"
                    },
                    {
                        "name": "bursting-virtual-kubelet",
                        "limitsCpu": "2000m",
                        "requestsCpu": "500m",
                        "limitsMem": "4096Mi",
                        "requestsMem": "512Mi"
                    },
                    {
                        "name": "profile-controller",
                        "limitsCpu": "1000m",
                        "requestsCpu": "250m",
                        "limitsMem": "1024Mi",
                        "requestsMem": "256Mi"
                    },
                    {
                        "name": "proxy",
                        "limitsCpu": "2000m",
                        "requestsCpu": "250m",
                        "limitsMem": "4096Mi",
                        "requestsMem": "512Mi"
                    },
                    {
                        "name": "resource-syncer",
                        "limitsCpu": "2000m",
                        "requestsCpu": "250m",
                        "limitsMem": "4096Mi",
                        "requestsMem": "512Mi"
                    },
                    {
                        "name": "bursting-resource-syncer",
                        "limitsCpu": "2000m",
                        "requestsCpu": "500m",
                        "limitsMem": "1024Mi",
                        "requestsMem": "256Mi"
                    },
                    {
                        "name": "webhook",
                        "limitsCpu": "2000m",
                        "requestsCpu": "500m",
                        "limitsMem": "1024Mi",
                        "requestsMem": "256Mi"
                    },
                    {
                        "name": "bursting-webhook",
                        "limitsCpu": "2000m",
                        "requestsCpu": "500m",
                        "limitsMem": "1024Mi",
                        "requestsMem": "256Mi"
                    }
                ]
			},
			"custom": {
				"isInstallProxy": true,
                "subnet_id": "ad821361-288b-4d1f-9309-65aa2809e4fd",
                "subnets": [
                    {
                        "subnetID": "ce374ecf-1559-41ef-8967-9de579b1296012"
                    }
                ]
			}
		}
	}
}

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