DevOps and Docker Talk: Cloud Native Interviews and Tooling Move K8s Stateful Pods Between Nodes
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Oct 9, 2025 In this engaging discussion, Philip Andrews, Global Field CTO at Cast AI, dives into the revolutionary concept of live migration for Kubernetes pods. He explains how this technology allows pods to move seamlessly between nodes without downtime, preserving critical connections and data. The conversation explores its significant benefits for stateful workloads, addresses networking challenges, and highlights use cases in machine learning. Philip also shares insights into bin packing strategies that optimize costs while ensuring performance reliability.
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Automation First For Cost Savings
- Cast AI automates cluster cost savings by continuously optimizing nodes and workloads.
- Live migration is a core automation enabling movement without downtime to reduce cloud bills.
Most Enterprise Apps Behave Stateful
- Many enterprise apps in Kubernetes are effectively stateful despite being containerized.
- These apps often cannot tolerate restarts and block effective cluster optimization.
Use Bin Packing To Free Nodes
- Bin pack your cluster by defragmenting workloads to free nodes and cut costs.
- Move workloads to new nodes and delete unused nodes to scale down in off-peak times.