Hi all! I'm extremally new to Kubernetes and learning a lot.. But my plan is to build a K3s cluster with selfheal (3 VM's on same host to start trying stuff out) and Rancher and Longhorn, Prometheus, Grafana and maybe lot's more when i learn more. But my question to you because I'm also new to databases. "MySQL or PostgreSQL?" I have never dealt with SQL before and it would be installed on my NAS in a docker. This is just for setup at home.