What's going on in my cluster?
summary
Shows concrete paths to visibility: query the Kubernetes API with kubectl or tools like K9s, Octant, Lens for non‑intrusive health checks; inject Envoy via Istio and view flows in Kiali/Taill (adds an extra network hop and Envoy costs ~50–100MB RAM); run node‑level eBPF (Cilium/Hubble) to capture network events once per node instead of per pod; add language agents (OpenTelemetry + Jaeger) for method‑level traces. Claims observability tops user interest in an Istio survey; demos show Kiali animations and Hubble working without per‑pod edits.
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chapters (12)
- 0:00Introduction and welcome
- 1:32Why observe Kubernetes clusters
- 2:54Kubernetes cluster basics
- 7:12Accessing Kubernetes API for observability
- 11:26Service mesh for network insights
- 17:51Node-level monitoring with eBPF
- 21:20Application-level observability
- 25:37Summarizing observability approaches
- 26:43Demo of K9s tool
- 27:25Demo of Lens and Istio console
- 28:29Demo of Hubble UI
- 29:35Closing remarks and Q&A
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