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Kube FM Podcasts, fireside chats, roundtables and educational programs about Kubernetes.

20/06/2025

Jasmine James Fuller, Head of Development Infrastructure at Square, shares practical strategies for optimizing Kubernetes costs through architecture choices.

She explains how separating workloads into dedicated clusters based on their architecture requirements (such as ARM64) is more cost-effective than using a one-size-fits-all approach. The discussion covers how choosing non-bare metal instances and creating architecture-specific environments can lead to significant cost savings.

Watch the full interview: https://ku.bz/swXRzZ1Ww

This interview is a reaction to Miguel Bernabeu Diaz and Thibault Jamet's episode https://ku.bz/_k-Y1jgFS

20/06/2025

Katie Lamkin-Fulsher, Staff Product Manager, Platform and Open Source at Intuit, discusses the human aspects of platform engineering.

She explains how platform teams must consider the developer experience when building tools — what's intuitive for platform engineers can be overwhelming for application developers. Katie shares Intuit's solution to this challenge: implementing fine-grained RBAC policies to prevent accidental outages and leveraging GenAI to transform complex build and deployment logs into digestible summaries for developers.

Watch the full interview: https://ku.bz/tx_vPsFrN

This interview is a reaction to Ori Shoshan's episode https://ku.bz/Xhd2xKDH7

20/06/2025

Brian Grant, CTO at ConfigHub, explains the origins and importance of the Kubernetes Resource Model (KRM). He discusses:

- Why a new term was needed to replace "Kubernetes-style API".
- The challenge of explaining Kubernetes principles to contributors.
- The shift from an operation-centric to a resource-centric model.

He contrasts Kubernetes' resource-centered approach with traditional operation-style APIs, emphasizing the unique way Kubernetes handles state and interactions through stored resources.

Watch the full episode: https://ku.bz/_ZLj6ZV-9

20/06/2025

Why Kubernetes doesn't rebalance pods in nodes?

Learnk8s runs a 4-day Advanced Kubernetes course next week online , and you will get to the bottom of questions like this (spoiler: the scheduler allocates pods when created, and it doesn't re-evaluate decisions).
You will also learn the nitty-gritty details of the Kubernetes architecture:

- How pods can serve traffic even if the control plane is unavailable.
- Why does Kubernetes run a single controller manager and scheduler even in HA?
- Why does the kubelet prefer to poll for updates rather than the master dispatching events?

This (and much more) is covered on the second day of the course.

You can find the full agenda, a breakdown of the modules and how to sign up here: https://ku.bz/bRfWBNxJc

Are you training your team?

Customize the course in full with private training https://learnk8s.io/corporate-training

19/06/2025

Rotem Tamir, CTO and Co-Founder at Ariga, shares practical lessons from building the Atlas Kubernetes operator.

He focuses on two fundamental principles: designing developer experience through well-thought-out CRD specs and status reporting, and the necessity to codify domain expertise into the operator's logic. Using Atlas as an example, he demonstrates how operators should abstract complex operations while maintaining transparency in their reconciliation process.

Watch the full interview: https://ku.bz/5BXQ0rKPy

This interview is a reaction to Steven Sklar's episode https://ku.bz/-k6hrcpV-

19/06/2025

Andrei Kvapil, CEO and Founder of Aenix, explains the key differences in how ArgoCD and FluxCD implement GitOps:

ArgoCD uses a centralized approach:

- Single instance manages multiple clusters
- Provides a user-friendly UI for developers to monitor deployments

FluxCD follows a per-cluster model:

- Extends Kubernetes with the controller pattern
- Functions as a Kubernetes add-on
- Offers a powerful CLI for quick Git repository connections

Andrei's comparison highlights the distinct architectural choices and user interfaces of these popular GitOps tools, revealing their implications for cluster management and developer experience.

Watch the full episode: https://ku.bz/0mvh5s4Ld

19/06/2025

Eli Birger, CTO and Co-Founder at PerfectScale, discusses two key expectations for Kubernetes in the next 10 years:

1. The ability to fractionally use GPUs for better utilization.
2. Improved infrastructure efficiency and faster auto-scaling to handle demand spikes more responsively

Watch the full interview: https://ku.bz/6GX7MNBtS

18/06/2025

Nathan Taber, Kubernetes and Container Registries Head of Product at Amazon Web Services (AWS), discusses the challenges of managing Kubernetes upgrades in enterprise environments.

He explains how breaking changes and aggressive release cycles create tension between innovation and stability needs. Nathan shares three essential strategies: implementing a dedicated upgrade plan as part of operational health, leveraging tools like EKS Upgrade Insights to detect compatibility issues, and building API abstractions to shield applications from deprecations. He predicts Kubernetes might evolve towards a dual-track system with a long-term stable branch for enterprises and a development branch for rapid innovation.

Watch the full interview: https://ku.bz/CYdKR23Z1

This interview is a reaction to Mathew Duggan's episode https://ku.bz/dVJW_qgF2

18/06/2025

Brian Fox, Co-Founder & CTO at Sonatype, explains why security in Kubernetes cannot be delegated to a single team.

He shares how malicious actors target developer credentials to distribute fake components through the software supply chain. Drawing from his experience, Brian highlights how nation-states are increasingly targeting commercial entities as part of proxy wars, making everyone an unwitting participant. He emphasizes the importance of developer education and compares it to teaching users about phishing — developers need to be cautious about downloading components from unknown sources, just as users need to avoid clicking suspicious links.

Watch the full interview: https://ku.bz/hS9sRr3sp

18/06/2025

This week on Learn Kubernetes Weekly 136:

🍏 How We Integrated Native macOS Workloads with Kubernetes
💉 Why our pods were breaking bad (and how we fixed them)
😊 FacetController: How We Made Infrastructure Changes at Lyft Simple
📦 Operational Considerations for Managing Stateful Workloads
🪔 Can configuration languages (Config DSLs) solve configuration complexity?

Read it now: https://learnk8s.io/issues/136

⭐️ This issue is brought to you by Learnk8s — get started on your Kubernetes journey through comprehensive online, in-person or remote training https://learnk8s.io/training

17/06/2025

Ari Weil, Cloud Evangelist and VP of Product Marketing at Akamai Technologies, explains what sets Akamai Cloud apart from competitors in the market.

He emphasizes their commitment to avoiding vendor lock-in while helping developers build solutions quickly and easily. Weil highlights Akamai's position as the world's most distributed cloud computing platform with integrated distribution and security services, their embrace of the open source community, and a price-to-performance ratio he claims is unmatched by other cloud providers.

Watch the interview: https://ku.bz/J_M2gZkm1

Akamai's AI inference: https://ku.bz/x8C0DhDT5

17/06/2025

David Sudia, Senior Product Engineer at Teleport, explains why platform engineering should be treated as product development.

He highlights how organizations often fail to recognize internal platforms as products, leading to feature-driven development instead of solution-focused approaches. David argues that the most valuable resource for platform teams isn't more engineers but product managers who can understand and translate user needs. He connects this to his work at Teleport, emphasizing how the success of security tools depends on creating solutions developers want to use.

Watch the full interview: https://ku.bz/KGLswKTsh

This interview is a reaction to Ori Shoshan's episode https://ku.bz/Xhd2xKDH7

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