Three’s a Crowd: How to Achieve 2-Node HA at the Edge and Make Your CFO Smile
Channel: CNCF [Cloud Native Computing Foundation]
Date: 2024-03-23

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Three’s a Crowd: How to Achieve 2-Node HA at the Edge and Make Your CFO Smile - Tyler Gillson & Pedro Oliveira, Spectro Cloud

When you’re scaling production K8s workloads to hundreds or thousands of edge sites, you know you need HA — but with conventional 3-node architectures, the hardware costs can be terrifying. This talk presents a new architecture for 2-node HA that gives you the resilience you need, and 33% cost savings… for a happier meeting with your CFO! It covers: - The challenge: real end user examples from hospitals, coffee shops and factory floors where 3-node HA proved problematic - The problem space: existing alternatives such as external data stores and ‘witnesses’ — and why they fall short - The blueprint: a new OSS-based 2-node HA design built on K3s, Kine, SQLite and Marmot, and the results it’s delivered so far - Your path forward: learnings from building this architecture so you can go forward with confidence!