KubeFM

Latest Episodes:

5,000 pods/second and 60% utilization with Gödel and Katalyst, with Yue Yin Feb 04, 2025

Show notes

Learn how ByteDance manages computing resources at scale with custom Kubernetes scheduling solutions that handle millions of pods across thousands of nodes.

Yue Yin, Software Engineer at ByteDance, discusses their open-source Gödel scheduler and Katalyst resource management system. She explains how these tools address the challenges of managing online and offline workloads in large-scale Kubernetes deployments.

You will learn:

How Gödel's distributed architecture with dispatcher, scheduler, and binder components enables the scheduling of 5,000 pods per second
Why NUMA-aware scheduling and two-layer architecture are crucial for handling complex workloads at scale
How Katalyst provides node-level resource insights to enable efficient workload co-location and improve CPU utilization

Sponsor

This episode is sponsored by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person or remote training.

More info

Find all the links and info for this episode here: https://ku.bz/lMpNng_33
Interested in sponsoring an episode? Learn more.

Black box vs white box observability in Kubernetes, with Artem Lajko Jan 28, 2025

Show notes

Platform Engineer Artem Lajko breaks down observability into three distinct layers and explains how tools like Prometheus, Grafana, and Falco serve different purposes. He also shares practical insights on implementing the right level of monitoring based on team requirements and capabilities.

You will learn:

How to implement the three-layer model (external, internal, and OS-level) and why each layer serves different stakeholders
How to choose and scale observability tools using a label-based approach (low, medium, high)
How to manage observability costs by collecting only relevant metrics and logs

Sponsor

This episode is sponsored by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person or remote training.

More info

Find all the links and info for this episode here: https://ku.bz/9sGxhmm8s
Interested in sponsoring an episode? Learn more.

Topology-aware routing: balancing cost savings and reliability, with William Morgan Jan 21, 2025

Show notes

In this episode, William Morgan, CEO of Buoyant, explores the complex trade-offs between cost optimization and reliability in Kubernetes networking. The discussion focuses on Topology-aware routing and why its implementation might not be the silver bullet for managing cross-zone traffic costs.

William shares practical insights from real-world implementations and explains why understanding these trade-offs is crucial for platform teams managing multi-zone Kubernetes clusters.

You will learn:

How Topology-aware routing attempts to reduce cross-zone traffic costs but can compromise reliability by limiting inter-zone communication
Why Layer 7 load balancing offers better traffic management through protocol awareness compared to topology-aware routing's Layer 4 approach
How HAZL (High Availability Zonal Load Balancing) provides a more nuanced solution by balancing cost savings with reliability guarantees through intelligent traffic routing

Sponsor

This episode is sponsored by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person or remote training.

More info

Find all the links and info for this episode here: https://ku.bz/CBwn51pl-
Interested in sponsoring an episode? Learn more.

Which Kubernetes PostgreSQL operator should you choose?, with David Pech Jan 14, 2025

Show notes

Are you running PostgreSQL on Kubernetes and need to choose the right operator? In this episode, David Pech, Staff Cloud Ops Engineer, shares his experience implementing database platforms on Kubernetes and guides teams through operator selection and platform requirements.

You will learn:

The core requirements for a PostgreSQL platform on Kubernetes, including autopilot capabilities, security practices, and observability
How to evaluate PostgreSQL operators based on their architecture — from single-instance deployments to cloud-native implementations
What teams should consider before building their own database-as-a-service and common pitfalls to avoid
The distinction between being production-ready (running single instances) versus platform-ready (operating at scale with proper tooling)

Sponsor

This episode is sponsored by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person or remote training.

More info

Find all the links and info for this episode here: https://ku.bz/rGMF2ktdb
Interested in sponsoring an episode? Learn more.

Exploring multi-tenancy for my Kubernetes learning platform, with Stefan Roman Dec 10, 2024

Show notes

Stefan Roman shares his experience building Labs4Grabs, a platform that gives students root access to Kubernetes clusters. He discusses the journey from evaluating simple namespace-based isolation to implementing full VM-based isolation with KubeVirt.

You will learn:

Why namespace isolation isn't sufficient for untrusted users and the limitations of tools like vCluster when running privileged workloads.
How to use KubeVirt to achieve complete workload isolation and the trade-offs.
Practical approaches to implementing network security with NetworkPolicies and managing resource allocation across multiple student environments.

Follow Stefan's journey from simple to complex isolation strategies, focusing on the technical decisions and trade-offs he encountered.

Sponsor

This episode is sponsored by Kusari — gain complete visibility into your software components and secure your supply chain through comprehensive tracking and analysis.

More info

Find all the links and info for this episode here: https://ku.bz/Xz-TrmX2F
Interested in sponsoring an episode? Learn more.

Optimize the Kubernetes dev experience by creating silos, with Michael Levan Dec 03, 2024

Show notes

Michael Levan explains how specialized teams and smart abstractions can lead to better outcomes. Drawing from cognitive science and his experience in platform engineering, Michael presents practical strategies for building effective engineering organizations.

You will learn:

Why specialized teams (or "silos") can improve productivity and why the real enemy is ego, not specialization.
How to use Internal Developer Platforms (IDPs) and abstractions to empower teams without requiring everyone to be a Kubernetes expert.
How to balance specialization and collaboration using platform engineering practices and smart abstractions
Practical strategies for managing cognitive load in engineering teams and why not everyone needs to know YAML.

Sponsor

This episode is brought to you by Testkube — scale all of your tests with Kubernetes, integrate seamlessly with CI/CD and centralize test troubleshooting and reporting.

More info

Find all the links and info for this episode here: https://ku.bz/qlZPfM-zr
Interested in sponsoring an episode? Learn more.

Rebuilding my homelab: suffering as service, with Xe iaso Nov 19, 2024

Show notes

Xe Iaso shares their journey in building a "compute as a faucet" home lab where infrastructure becomes invisible and tasks can be executed without manual intervention. The discussion covers everything from operating system selection to storage architecture and secure access patterns.

You will learn:

How to evaluate operating systems for your home lab — from Rocky Linux to Talos Linux, and why minimal, immutable operating systems are gaining traction.
How to implement a three-tier storage strategy combining Longhorn (replicated storage), NFS (bulk storage), and S3 (cloud storage) to handle different workload requirements.
How to secure your home lab with certificate-based authentication, WireGuard VPN, and proper DNS configuration while protecting your home IP address.

Sponsor

This episode is sponsored by Nutanix — innovate faster with a complete and open cloud-native stack for all your apps and data anywhere.

More info

Find all the links and info for this episode here: https://ku.bz/2kzj2MgfH
Interested in sponsoring an episode? Learn more.

The hater's guide to Kubernetes, with Paul Butler Nov 12, 2024

Show notes

If you're trying to make sense of when to use Kubernetes and when to avoid it, this episode offers a practical perspective based on real-world experience running production workloads.

Paul Butler, founder of Jamsocket, discusses how to identify necessary vs unnecessary complexity in Kubernetes and explains how his team successfully runs production workloads by being selective about which features they use.

You will learn:

The three compelling reasons to use Kubernetes are managing multiple services across machines, defining infrastructure as code, and leveraging built-in redundancy.
Why to be cautious with features like CRDs, StatefulSets, and Helm and how to evaluate if you really need them.
How to stay on the "happy path" in Kubernetes by focusing on stable and simple resources like Deployments, Services, and ConfigMaps.
When to consider alternatives like Google Cloud Run for simpler deployments that don't need the full complexity of Kubernetes

Sponsor

This episode is sponsored by Syntasso, the creators of Kratix, a framework for building composable internal developer platforms

More info

Find all the links and info for this episode here: https://ku.bz/VB-0WYqtb
Interested in sponsoring an episode? Learn more.

Kubernetes webhooks explained and Aspect Oriented Programming, with Gordon Myers Nov 05, 2024

Show notes

This episode explores Admission Controllers and Webhooks with Gordon Myers, who shares his experience implementing webhook solutions in production. Gordon explains the lifecycle of Kubernetes API requests and how webhooks can intercept and modify resources before they are stored in etcd.

You will learn:

How the Kubernetes API processes requests through authentication, authorization, and Admission Controllers.
The difference between Validating and Mutating webhooks and how to implement them using JSON Patch.
Best practices for testing webhooks and avoiding common pitfalls that can break cluster deployments.
Real-world examples of webhook implementations, including injecting secrets from HashiCorp Vault into containers.

Sponsor

This episode is sponsored by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person or remote training.

More info

Find all the links and info for this episode here: https://ku.bz/Dmn93dd7M
Interested in sponsoring an episode? Learn more.

98% faster data imports in deployment previews, with Nick Nikitas Oct 29, 2024

Show notes

Are you facing challenges with pre-production environments in Kubernetes?

This KubeFM episode shows how to implement efficient deployment previews and solve data seeding bottlenecks.

Nick Nikitas, Senior Platform Engineer at Blueground, shares how his team transformed their static pre-production environments into dynamic previews using ArgoCD Application Sets, Wave and Velero.

He explains their journey from managing informal environment sharing between teams to implementing a scalable preview system that reduced environment creation time from 19 minutes to 25 seconds.

You will learn:

How to implement GitOps-based preview environments with Argo CD Application Sets and PR generators for automatic environment creation and cleanup.
How to control cloud costs with TTL-based termination and FIFO queues to manage the number of active preview environments.
How to optimize data seeding using Velero, AWS EBS snapshots, and Kubernetes PVC management to achieve near-instant environment creation.

Sponsor

This episode is sponsored by Loft Labs — simplify Kubernetes with vCluster, the leading solution for Kubernetes multi-tenancy and cost savings.

More info

Find all the links and info for this episode here: https://ku.bz/tt4VFslxD
Interested in sponsoring an episode? Learn more.

Our TOPPODCAST Picks

Follow Us

Stay Connected

Related Podcasts

Links

Stay Connected