Deploy PV autoscaling

This topic describes how to deploy and configure PV autoscaling. Installation is based on a Helm chart published in github repo.

Prerequisites

A running EKS cluster, v1.7 or later, with the EBS CSI add-on installed, with one storage class defined
Kubectl is installed
Access to the Zesty platform
The Zesty API key
Outbound HTTPS communication from cluster nodes
The AWS account ID of the cluster on which PV autoscaling is being installed

Before deploying, share this ID with a Zesty Customer Support representative. Note that this ID may be different than the one from the Management account (formerly known as Master Payer account).

To install PV autoscaling:

Add or update the Zesty repository to your Helm client:
- To add the repository:
  
  helm repo add zestyrepo https://zesty-co.github.io/zesty-helm
- If the repository is already configured, update it:
  
  helm repo update
Install the Zesty PVC Helm chart:

   # Minimal
   helm install zesty-pvc --set agentManager.apiKey=<API_KEY> zestyrepo/zesty
   
   # With advanced options
   helm install zesty-pvc --set agentManager.apiKey=<API_KEY> /  
   [--set agentManager.prometheusExporter.port=<PORT>] /  
   [--set "tolerations[0].operator=<VALUE>,tolerations[0].effect=<VALUE>,tolerations[0].key=<KEY>"] /  
   [--set "nodeSelector.<KEY>=<VALUE>"] /  
   [--set storageClassName=<storageClass name>] /  
   [--namespace <Namespace>] /

The following table describes the popular command arguments. For the full arguments list, see the Helm chart at https://zesty-co.github.io/zesty-helm/.

Argument	Mandatory	Description
agentManager.apiKey=<API_KEY>	Yes	Enter the Zesty-provided API Key. You can also enter the API key as a secret, as described in the Helm chart. To get your API key, see Find your Zesty API key.
agentManager.prometheusExporter.port=	No	Enables the Prometheus exported for PV autoscaling solution. We recommend using the Prometheus default port, 8443.
agentManager.prometheusExporter.podMonitor.enabled=	No	Enables Prometheus autodiscovery of Zesty metrics.
"tolerations[0].operator=,tolerations[0].effect=,tolerations[0].key="	No	Configures tolerations roles. You can set as many as needed while making sure to increase the list index number.
"nodeSelector.="	No	Configures on which nodes PV autoscaling is allowed. Use quotes to avoid shell issues. For example, “nodeSelector.kubernetes.io/os=linux”. Note the ‘\’ before the “.io” in the node selector key that is used as an escape character.
--set storageClassName=	No	Configures which storage class PV autoscaling will use to provision new disks. If this is not set, the first one found with EBS CSI provisioner (ebs.csi.aws.com) is used.
--namespace	No	Specifies on which namespace PV autoscaling resources will be deployed.