The Kubernetes cluster on which you are deploying OpenWhisk must meet the following requirements:
- Kubernetes version 1.9+. However, version 1.9.4 will not work for OpenWhisk due to a bug with volume mount subpaths (see[kubernetes-61076]). This bug will surface as a failure when deploying the nginx container.
- The ability to create Ingresses to make a Kubernetes service available outside of the cluster so you can actually use OpenWhisk.
- Unless you disable persistence (see docs/configurationChoices.md), either your cluster must be configured to support Dynamic Volume Provision and you must have a DefaultStorageClass admission controller enabled or you must manually create any necessary PersistentVolumes when deploying the Helm chart.
- Endpoints of Kubernetes services must be able to loopback to
themselves (the kubelet's
hairpin-modemust not benone).