A hitchhikers guide to observe (Java) applications in Kubernetes
summary
Survey compares concrete signals and costs: Headlamp, Skooner, k9s query the Kubernetes API with zero intrusion; Istio + Kiali sidecars give per‑pod traffic but add CPU and network hops; node‑level eBPF via Cilium Hubble UI captures cluster traffic with fewer hops and lower per‑pod overhead; application agents like the OpenTelemetry Java agent deliver JVM method‑level traces, logs and metrics at the cost of rebuilding images. Demo shows Spring Petclinic observed via service‑mesh and eBPF installs an hour before some UIs show no traffic.
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chapters (7)
- 0:00Observability in Kubernetes
- 6:50Kubernetes API queries
- 11:23Service mesh insights
- 15:34eBPF cluster monitoring
- 23:43OpenTelemetry observability
- 36:24Choosing observability tools
- 38:11Summary
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