[markbnj]

The same good reasons for running any workload on k8s apply to databases as well, it's just that they are more complicated than stateless services due to the (no surprise) state and the clustering/control protocol things that often accompany HA data stores. Kubernetes has the tools available to manage state now, and many (maybe most) databases now offer some support for its native discovery model. So all in all my current preferred strategy for databases is to prefer hosted if its available (cloudsql, elastic db), k8s if it isn't, and vms if it won't work on k8s.