CSI - Longhorn
- Longhorn has some speed implications, as it is slowing down all of the servers, but is a pretty reliable
- Took me a while to get it stable, multipath fix was needed. You can check this: Linux - Multipath
CNI - Flannel
- Flannel is a tried and tested solution and has not given me any issues so far.
- Comes pre-packaged with k3s
Reverse proxy - Istio
- After the recent deprecation of Kubernetes - Ingress and migration to Gateway API