Upgrade — Overview

• Before you upgrade your cluster to KubeSphere 3.2.0, you need to have a KubeSphere cluster running v3.1.x.
• If your existing KubeSphere v3.1.x cluster is installed on Kubernetes 1.19.x+, you can choose to only upgrade KubeSphere to 3.2.0 or upgrade Kubernetes (to a higher version) and KubeSphere (to 3.2.0) at the same time.

• During the upgrade process, there may be a short interruption of applications (especially for those single-replica Pods). Please arrange a reasonable period of time for your upgrade.
• It is recommended to back up etcd and stateful applications before in production. You can use Velero to implement the backup and migrate Kubernetes resources and persistent volumes.