Kubernetes On the Edge With K3s For a Smart Metering Use Case
summary
Edge cluster runs k3s on 4‑core/8GB NUC as the central aggregator for IoT meters, provisioned via PXE and Ansible, with Prometheus/Grafana and Fluent Bit for telemetry. Networking uses MetalLB layer2 to present a stable VIP, RabbitMQ handles ingest over MQTTs with mutual TLS via cert‑manager, and Longhorn provides replicated PVs so stateful workloads survive node failures. Single‑node installs are supported; multi‑node clusters keep control‑plane quorum for HA. Updates to air‑gapped sites go by dispatched technician running Ansible. Devices send ~1 sample/min (~tens of KB over hours).
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chapters (10)
- 0:00Start
- 2:47Why are we building this?
- 5:02How does it work?
- 7:38What are some considerations?
- 14:59Provisioning K8s
- 19:10Networking
- 24:06High Availability
- 26:44Certificate Management
- 29:46Final Implementation
- 30:17Conclusion
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