Introduction

Validates whether you prevent multiple pods from being deployed on the same node in the cluster to increase availability in case one node becomes unavailable. Otherwise, a single node outage may cause an entire deployment/stateful set to become unavailable.

Supported Advice States

Action Needed

The advice automatically discovers whether a Kubernetes workload resource spreads pods across nodes via a podAntiAffinity rule. The discovery is performed by the open-source library kube-score and integrated into this advice.

Validation Needed

Not supported.

Implemented

Once you have configured Kubernetes to spread the pods across different nodes.

Disabling Advice

Every advice is automatically active as described in extension-kubernetes#configuration. You can also activate advice individually, using for this advice, the identifier com.steadybit.extension_kubernetes.advice.k8s-host-podantiaffinity.