Kubernetes requirements

If we are installing a WebSphere Liberty operator on a Kubernetes cluster, the environment must meet the Kubernetes cluster requirements.

Kubernetes requirements

WebSphere Liberty operator requires a Kubernetes version 1.30, 1.29, 1.28, or 1.27 cluster on Linux x86_64 (amd64), Linux on Power (ppc64le), or Linux on IBM Z (s390x) platform, with cluster-admin permissions.

If we plan to use Operator Lifecycle Manager (OLM), it must be installed on your cluster.

To use the manageTLS capability, we must have a certificate manager (such as cert-manager) installed.

Before we can use the Ingress resource to expose the application, we must install an ingress controller such as Nginx or Traefik.