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Volcengine Kubernetes Engine

Node pool

Node pool overview

Node pools are provided in Volcengine Kubernetes Engine (VKE) to enable you to easily manage nodes in Kubernetes clusters. This topic mainly describes the overview, features, and life cycles of node pools.

Introduction

A node pool consists of one or more nodes that have the same configurations in a cluster. The configurations of a node pool include node attributes, such as node specifications, availability zones (AZ), labels, and taints. You can specify the attributes when you create a node pool, or modify the attributes after the node pool is created. For more information about how to create a node pool, see Creating node pools.

You can scale a node pool to add one or more Elastic Compute Service (ECS) instances that function as nodes with the same configurations. For more information about how to scale node pools, see Scaling out/in node pools. Under specific conditions, you can also add your existing ECS nodes to a VKE node pool. For more information about how to add existing nodes, see Add an existing node. Node pools enable you to easily manage and perform operation and maintenance on cluster nodes in groups. For example, you can configure worker nodes and configure cluster autoscaling. For more features of node pools, see Managing node pools.

Node pools enable you to achieve mixed deployment and management of different types of nodes in the same cluster.

In a cluster, you can create node pools with different operating systems, such as veLinux, CentOS-compatible veLinux version, and Ubuntu.

In a cluster, you can create node pools with different billing types, including pay-as-you-go, subscription, and preemptible instances.

You can create multiple node pools with autoscaling enabled in a cluster.

You can create multiple node pools with different scaling modes in a cluster.