Move K8s Stateful Pods Between Nodes

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DevOps and Docker Talk: Cloud Native Interviews and Tooling

Bret Fisher

188 episodes

1 day ago

Interviews from Bret Fisher's live show with co-host Nirmal Mehta. Topics cover container and cloud topics like Docker, Kubernetes, Swarm, Cloud Native development, DevOps, SRE, GitOps, DevSecOps, platform engineering, and the full software lifecycle. Full show notes and more info available at https://podcast.bretfisher.com

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Move K8s Stateful Pods Between Nodes

DevOps and Docker Talk: Cloud Native Interviews and Tooling

46 minutes

3 weeks ago

Move K8s Stateful Pods Between Nodes

Bret is joined by Philip Andrews and Dan Muret of Cast AI to discuss pod live migration between nodes in a Kubernetes cluster.

🙌 My next course is coming soon! I've opened the waitlist for those wanting to go deep in GitHub Actions for DevOps and AI automation in 2025. I'm so thrilled to announce this course. The waitlist allows you to quickly sign up for some content updates, discounts, and more as I finish building the course. https://learn.bretfisher.com/waitlist🍾

Cast AI dynamically moves your pod to a different node without downtime or data lost. It copies your running pod data, memory, IP address, and TCP connections from one node to another in real time.

In this episode, we nerd out over how Cast AI works under the hood, use cases for it, including hardware and OS maintenance on a node. I've got a feeling Cast AI has a winning feature on their hands.

★Show Links★
Cast AI website
Cast AI YouTube Channel

Check out the video podcast version here: https://youtu.be/yINNWxRywv4

Creators & Guests

Cristi Cotovan - Editor
Bret Fisher - Host
Beth Fisher - Producer
Dan Muret - Guest
Philip Andrews - Guest

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(00:00) - Introduction
(02:21) - Cast AI Elevator Pitch
(06:57) - Stateful Workloads
(10:03) - Bin Packing in Live Migration
(13:35) - Stateful vs Stateless
(15:43) - Networking and Storage Considerations
(23:03) - Future Developments and Use Cases
(25:43) - ML Workloads
(28:25) - Live Migration of Spot Instances
(31:01) - Live Migration Process Explained
(39:02) - Challenges and Engineering Behind Live Migration
(43:56) - Getting Started with Cast AI