KubeFM

Latest Episodes:

When Kubernetes and Go don't work well together, with Emin Laletović Oct 22, 2024

Show notes

Discover how a seemingly simple 502 error in Kubernetes can uncover complex interactions between Go and containerized environments.

Emin Laletović, a solution architect at Hybird Technologies, shares his experience debugging a production issue in which a specific API endpoint failed due to out-of-memory errors.

He walks through the systematic investigation process, from initial log checks to uncovering the root cause in Go's memory management within Kubernetes.

You will learn:

How Go's garbage collector interacts with Kubernetes resource limits, potentially leading to unexpected OOMKilled errors.
The importance of the GOMEMLIMIT environment variable in Go 1.19+ for managing memory usage in containerized environments.
Debugging techniques for memory-related issues in Kubernetes, including GODEBUG for garbage collector tracing.
Considerations for optimizing Go applications in Kubernetes, balancing performance and resource utilization.

Sponsor

This episode is sponsored by StormForge – Double your Kubernetes resource utilization and unburden developers from sizing complexity with the first HPA-compatible vertical pod rightsizing solution. Try it for free.

More info

Find all the links and info for this episode here: https://ku.bz/7fnF-tJ8R
Interested in sponsoring an episode? Learn more.

Declarative configuration and the Kubernetes Resource Model, with Brian Grant Oct 15, 2024

Show notes

This episode offers a rare glimpse into the design decisions that shaped the world's most popular container orchestration platform.

Brian Grant, CTO of ConfigHub and former tech lead on Google's Borg team discusses the Kubernetes Resource Model (KRM) and its profound impact on the Kubernetes ecosystem.

He explains how KRM's resource-centric API patterns enable Kubernetes' flexibility and extensibility and influence the entire cloud native landscape.

You will learn:

How the Kubernetes API evolved from inconsistency to a uniform structure, enabling support for thousands of resource types.
Why Kubernetes' self-describing resources and Server-side Apply simplify client implementations and configuration management.
The evolution of Kubernetes configuration tools like Helm, Kustomize, and GitOps solutions.
Current trends and future directions in Kubernetes configuration, including potential AI-driven enhancements.

Sponsor

More info

Find all the links and info for this episode here: https://ku.bz/_ZLj6ZV-9
Interested in sponsoring an episode? Learn more.

Comparing GitOps: Argo CD vs Flux CD, with Andrei Kvapil Oct 08, 2024

Show notes

Dive into the world of GitOps and compare two of the most popular tools in the CNCF landscape: Argo CD and Flux CD.

Andrei Kvapil, CEO and Founder of Aenix, breaks down the strengths and weaknesses of Argo CD and Flux CD, helping you understand which tool might best fit your team's needs.

You will learn:

The different philosophies behind the tools.
How they handle access control and deployment restrictions.
Their trade-offs in usability and conformance to infrastructure as code.
Why there is no one-size-fits-all in the GitOps world.

Sponsor

This episode is sponsored by DigitalOcean — learn how GPUs for DigitalOcean Kubernetes can enable your AI/ML workloads.

More info

Find all the links and info for this episode here: https://ku.bz/0mvh5s4Ld
Interested in sponsoring an episode? Learn more.

Kubernetes is simple: it's just Linux, with Eric Jalal Oct 01, 2024

Show notes

Eric Jalal, an independent consultant and Kubernetes developer, explains how Kubernetes is fundamentally built on familiar Linux features. He discusses why understanding Linux is crucial for working with Kubernetes and how this knowledge can simplify your approach to cloud-native technologies.

You will learn:

Why Eric considers Kubernetes to be "just Linux" and how it wraps existing Linux technologies.
The importance of understanding Linux fundamentals (file systems, networking, storage).
How Kubernetes provides a standard and consistent interface for managing Linux-based infrastructure.
Why learning Linux deeply can make Kubernetes adoption an incremental step rather than a giant leap

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/-jCTfgqRC
Interested in sponsoring an episode? Learn more.

Configuring requests & limits with the HPA at scale, with Alexandre Souza Sep 24, 2024

Show notes

Alexandre Souza, a senior platform engineer at Getir, shares his expertise in managing large-scale environments and configuring requests, limits, and autoscaling.

He explores the challenges of over-provisioning and under-provisioning and discusses strategies for optimizing resource allocation using tools like Horizontal Pod Autoscaler (HPA) and Vertical Pod Autoscaler (VPA).

You will learn:

How to set appropriate resource requests and limits to balance application performance and cost-efficiency in large-scale Kubernetes environments.
Strategies for implementing and configuring Horizontal Pod Autoscaler (HPA), including scaling policies and behavior management.
The differences between CPU and memory management in Kubernetes and their impact on workload performance.
Techniques for leveraging tools like KubeCost and StormForge to automate resource optimization.

Sponsor

This episode is sponsored by VictoriaMetrics - request a free trial for VictoriaMetrics enterprise today.

More info

Find all the links and info for this episode here: https://ku.bz/z2Vj9PBYh
Interested in sponsoring an episode? Learn more.

Tortoise: outpacing the optimization challenges in Kubernetes, with Kensei Nakada Sep 17, 2024

Show notes

In this KubeFM episode, Kensei Kanada discusses Tortoise, an open-source project he developed at Mercari to tackle Kubernetes resource optimization challenges. He explains the limitations of existing solutions like Horizontal Pod Autoscaler (HPA) and Vertical Pod Autoscaler (VPA), and how Tortoise aims to provide a more comprehensive and automated approach to resource management in Kubernetes clusters.

You will learn:

The complexities of resource optimization in Kubernetes, including the challenges of managing HPA, VPA, and manual tuning of resource requests and limits
How Tortoise automates resource optimization by replacing HPA and VPA, reducing the need for manual intervention and continuous tuning
The technical implementation of Tortoise, including its use of Custom Resource Definitions (CRDs) and how it interacts with existing Kubernetes components
Strategies for adopting and migrating to new tools like Tortoise in a large-scale Kubernetes environment

Sponsor

This episode is sponsored by LearnKube — estimate the perfect cluster node with the Kubernetes Instance Calculator

More info

Find all the links and info for this episode here: https://ku.bz/bRd0243xQ
Interested in sponsoring an episode? Learn more.

How we are managing a container platform with Kubernetes, with Ángel Barrera Sánchez Sep 10, 2024

Show notes

In this KubeFM episode, Ángel Barrera discusses Adidas' strategic shift to a GitOps-based container platform management system, initiated in May 2022, and its impact on their global infrastructure.

You will learn:

The initial state and challenges: Understand the complexities and inefficiencies of Adidas' pre-GitOps infrastructure.
The transition process: Explore the steps and strategies used to migrate to a GitOps-based system, including tool changes and planning.
Technical advantages: Learn about the benefits of the pull mechanism, unified configuration, and improved visibility into cluster states.
Developer and business feedback: Gain insights into the feedback from developers and the business side, and how they were convinced to invest in the migration.

Sponsor

This episode is sponsored by ControlPlane — empower your Kubernetes deployments with ControlPlane Enterprise for Flux CD.

More info

Find all the links and info for this episode here: https://ku.bz/-5QbzQXJg
Interested in sponsoring an episode? Learn more.

The basics of observing Kubernetes: a bird-watcher's perspective, with Miguel Luna Sep 03, 2024

Show notes

In this KubeFM episode, Miguel Luna discusses the intricacies of Observability in Kubernetes, including its components, tools, and future trends.

You will learn:

The fundamental components of Observability: metrics, logs, and traces, and their roles in understanding system performance and health.
Key tools and projects: insights into Keptn and OpenTelemetry and their significance in the Observability ecosystem.
The integration of AI technologies: how AI is shaping the future of Observability in Kubernetes.
Practical steps for implementing Observability: starting points, what to monitor, and how to manage alerts effectively.

Sponsor

This episode is sponsored by LearnKube — estimate the perfect cluster node with the Kubernetes Instance Calculator

More info

Find all the links and info for this episode here: https://ku.bz/WwS04jYvv
Interested in sponsoring an episode? Learn more.

Abusing Distroless containers: shell commands on shell-less containers, with Harsha Koushik Aug 27, 2024

Show notes

In this KubeFM episode, Harsha explores the intricacies of Kubernetes security, focusing on the benefits and misconceptions of Distroless container images and the broader aspects of container security.

You will learn:

The advantages and limitations of Distroless container images: understand why these images are smaller, have a reduced attack surface and are not inherently secure.
Best practices for container security: gain insights into selecting base images, managing dependencies, and fortifying your infrastructure at every layer.
Supply chain security: explore how the supply chain can be an attack vector and the importance of signing artifacts and validating sources.
Emerging Kubernetes tools and future projects: discover the latest tools Harsha is monitoring and get a sneak peek into his upcoming projects, including a new podcast and a tool for simulating multistage attacks in cloud-native environments.

Sponsor

This episode is sponsored by LearnKube — estimate the perfect cluster node with the Kubernetes Instance Calculator

More info

Find all the links and info for this episode here: https://ku.bz/n_sJ04xMY
Interested in sponsoring an episode? Learn more.

The ticking supply chain attack bomb of exposed Kubernetes secrets, with Assaf Morag and Yakir Kadkoda Jun 18, 2024

Show notes

In this KubeFM episode, Yakir and Assaf from Aqua Security explore how a robust Kubernetes secrets strategy is necessary to prevent leaks and maintain a strong security posture.

You will learn:

How Kubernetes secrets are leaked, and what tools can you use to prevent that (Hint: Yakir and Assaf suggested using more than one.)
How shadow IT is a more significant threat you might think and why companies should monitor personal Github repositories.
What happens when a secret is leaked and how attackers exploit your resources (or further gain access to more).

Sponsor

This episode is sponsored by Isovalent — watch the top Kubernetes security use cases that Tetragon and eBPF cover for platform teams

More info