“Are These Things Talking to Each Other?” - Observing Kubernetes Networking...
summary
Kubernetes networking is observable end-to-end using Cilium’s eBPF datapath, Hubble flows and Prometheus/Grafana metrics. The demo reproduces a real outage caused by a DNS typo, a NetworkPolicy copied with the same typo causing policy denied drops, and a service port mismatch (pods listen on 8000 while service targets 8080) producing missing SYNs and retries; Hubble CLI plus a Grafana Hubble data source prototype lets operators query raw flows, correlate traces and fix the issues.
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chapters (7)
- 0:00Networking fundamentals
- 3:46Kubernetes networking
- 6:03eBPF, Cilium, and Hubble
- 8:07Observability with Hubble
- 11:33Architecture of observability
- 14:17Live debugging scenarios
- 24:39Grafana integration
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