Holy smokes that explains so much. Amazon’s review/feedback mechanism is completely worthless with commingled inventory. No wonder it seemed ineffective.
Nice post, one more thing to keep in mind with your StatefulSets is how long the service running in the pod takes to come back up. Many will scan the on disk state for integrity and perform recovery tasks. These can take a while and mean the overall service is in a degraded state.
Manage these things and any stateful distributed service can run easily in Kubernetes.