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You can resize your Kubernetes cluster at any time to meet changing workload demands, improve resource utilization, or reduce infrastructure costs. Resizing your Kubernetes cluster changes the number of nodes in your worker node pool by adding or removing nodes. This can be done through the web interface, CLI, or API.

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See the Current Size of Your Cluster

You can see the set size of your cluster in the Overview tab of your cluster’s page and details of your nodes in the Nodes tab. Nodes

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Resize via Web Interface

  1. Navigate to the Kubernetes page in the Ubicloud Console.
  2. Click on the name of the cluster you want to resize.
  3. Click the Settings tab.
  4. In the Resize Worker Node Pool section, select the desired number of nodes and click the Resize button.
Resize Worker Node Pool

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Resize via CLI

You can also resize your cluster using the ubi CLI tool with the resize-nodepool command: 
ubi kc (location/kc-name | kc-id) resize-nodepool (np-name | np-id) node-count

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Resize via API

To resize your cluster using the API, send a POST request to the kubernetes-cluster/{cluster_ref}/nodepool/{nodepool_ref}/resize endpoint with the desired number of nodes in the request body: 
POST https://api.ubicloud.com/project/{project_id}/location/{location}/kubernetes-cluster/{kubernetes_cluster_reference}/nodepool/{kubernetes_nodepool_reference}/resize
Content-Type: application/json  

{
  "node_count": <node-count>
}
You can find more information in the API documentation: Change number of nodes of a Kubernetes Nodepool.