Kubernetes networking is notorious. Flannel, Calico, Cilium, oh my!
Every Service gets a DNS name. Instead of remembering an IP, your pods can talk to my-service.my-namespace.svc.cluster.local. Kubernetes networking is notorious
The standard for K8s metrics. Scrapes metrics from nodes, pods, and the API server. The plugin standard
Scratch space. Pods have temporary disk space (logs, emptyDir volumes). You must control this via ephemeral-storage requests/limits. Cilium (eBPF performance).
The plugin standard. Popular options: Calico (security), Flannel (simple), Cilium (eBPF performance).