KubeFM

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**KubeFM**

Discover all the great things happening in the world of Kubernetes, learn (controversial) opinions from the experts and explore the successes (and failures) of running Kubernetes at scale.

Latest Episodes:

From 0 to 10k builds a week with self-hosted Jenkins on Kubernetes, with Stéphane Goetz Jun 11, 2024

Show notes

In this KubeFM episode, Stéphane shares his journey of migrating, optimizing and scaling Jenkins in Kubernetes.

He discusses the technical challenges, solutions, and strategies employed.

You will learn:

How Jenkins on Kubernetes was scaled to handle 10,000 weekly builds.
How they started their journey in 2015 and how the cluster has evolved in the past nine years.
The challenges of managing builds in Jenkins: Docker in Docker, Docker out of Docker and KubeVirt.
The lessons learned in created ephemeral environments.

Sponsor

This episode is sponsored by CloudBees — learn how to use Kubernetes pods as Jenkins agents

More info

Find all the links and info for this episode here: https://ku.bz/Rg42-LLvQ
Interested in sponsoring an episode? Learn more.

Platform engineering: learning from the Kubernetes API, with Sven Hans Knecht Jun 04, 2024

Show notes

In this KubeFM episode, Hans, a Principal Cloud engineer, shares his experiences empowering teams to use, build and manage platforms built on Kubernetes.

You will learn:

How OpenTelemetry and Prometheus shape cluster management and observability.
The role of tools like ArgoCD and Flux in enabling GitOps and streamlining deployment processes.
The significance of governance tools such as Gatekeeper and OPA for secure and validated resource creation.
The benefits of Custom Resource Definitions (CRDs) and operators in automating processes and enhancing the developer experience.

Sponsor

This episode is sponsored by Sysdig — 5 Steps to Securing Kubernetes

More info

Find all the links and info for this episode here: https://ku.bz/SyPM8Ch43
Interested in sponsoring an episode? Learn more.

Hacking Alibaba Cloud's Kubernetes cluster, with Ronen Shustin and Hillai Ben-Sasson May 28, 2024

Show notes

In this KubeFM episode, Hillai and Ronen, security researchers at Wiz, explore the intricacies of hacking Alibaba Cloud's Kubernetes cluster.

They share their experiences and insights on identifying and exploiting vulnerabilities, mainly focusing on misconfigurations and their impact on cloud security.

You will learn:

How Hillai and Ronen gained access to a Kubernetes cluster through a Postgres database.
How they moved laterally and managed to obtain push and pull rights to a private container registry.
Recommendations for securing multi-tenant Kubernetes clusters and maintaining environment hygiene.

More info

Find all the links and info for this episode here: https://ku.bz/yr16qNTFx
Interested in sponsoring an episode? Learn more.

CoreDNS will fail you at scale (with default settings), with Mohamed Hamdan Faris S M May 21, 2024

Show notes

In this KubeFM episode, Faris shares his experience managing CoreDNS and scaling Kubernetes clusters with 900 nodes and 15k pods.

He shares the challenges and solutions encountered during an incident, providing valuable insights into maintaining a robust Kubernetes environment.

You will learn:

The importance of scaling the Kubernetes control plane for large clusters.
Strategies for optimizing CoreDNS to ensure efficient DNS resolution and prevent incidents.
The pros and cons of using VictoriaMetrics versus Prometheus for monitoring and observability.
Tips for maintaining a calm and effective team dynamic during high-stress situations.

Sponsor

This episode is sponsored by Datadog — a single, unified platform for monitoring CoreDNS alongside the rest of your stack. Try it free for 14 days and get a free t-shirt

More info

Find all the links and info for this episode here: https://ku.bz/4QD3kFP60
Interested in sponsoring an episode? Learn more.

The best operating system for Kubernetes, with Mircea-Pavel Anton May 14, 2024

Show notes

In this KubeFM episode, Mircea shares his journey of migrating a home lab to Kubernetes, specifically choosing Talos over other operating systems like Ubuntu, Flatcar, or Bottlerocket.

Mircea also discusses his decision-making process and experiences in setting up and optimizing his Kubernetes home lab.

You will learn:

What is Talos Linux and how it compares to other operating systems.
The challenges and considerations involved in migrating to Kubernetes, including selecting network plugins and GitOps.
Insights into managing and securing Kubernetes clusters, focusing on the advantages of immutable operating systems.

Sponsor

This episode is brought to you by Digital Ocean — enjoy a free $200 credit when you start using DigitalOcean Kubernetes

More info

Find all the links and info for this episode here: https://ku.bz/LnzSW4BxY
Interested in sponsoring an episode? Learn more.

Observability will speed up your Kubernetes troubleshooting, with Jennifer Luther Thomas May 07, 2024

Show notes

With a passion for security and a knack for troubleshooting, Jen discusses the critical role of network policies in Kubernetes security, the complexities involved in their implementation, and the balance between security and manageability.

She also covers the importance of Custom Resource Definitions and shares her perspective on emerging Kubernetes tools.

In this KubeFM episode, you will learn:

The importance of observability in troubleshooting network policies and how it aids in debugging complex issues.
The trade-offs between the complexity of network policies and the security benefits they provide.
The skills, thought process and humility behind troubleshooting technologies you are unfamiliar with.

Sponsor

This episode is brought to you by Otterize — automate workload IAM policies: zero-friction development, zero-trust security.

More info

Find all the links and info for this episode here: https://ku.bz/0RxMvG14y
Interested in sponsoring an episode? Learn more.

The good, the bad and the ugly of templating YAML in Kubernetes, with Alexander Block Apr 30, 2024

Show notes

In this KubeFM episode, Alexander Block delves into the intricacies of Kubernetes templating and deployment tools, sharing his journey from frustration with existing solutions to creating his tool, kluctl.

Alex also discusses the challenges and solutions in Kubernetes templating and deployment, emphasizing the need for more adaptable tools in the Kubernetes ecosystem.

You will learn:

The fundamental flaws of Helm and how they impact Kubernetes deployments and tools packaging.
How tools such as Kustomize, CUE, jsonnet are only a partial solution to templating.
Alternatives to Helm and the future of Kubernetes resource templating and distribution.

Sponsor

This episode is sponsored by Komodor — simplify cluster management and troubleshooting to unlock the full value of Kubernetes.

More info

Find all the links and info for this episode here: https://ku.bz/M380BCDR-
Interested in sponsoring an episode? Learn more.

Kubernetes needs a Long Term Support (LTS) release plan, with Mathew Duggan Apr 23, 2024

Show notes

With the rapid pace of the cloud-native ecosystem, staying current with Kubernetes updates and managing upgrades becomes a daunting task for many organizations.

In this KubeFM episode, Mat discusses the necessity of long-term support for Kubernetes and explores the intricacies of managing Kubernetes upgrades in a fast-evolving landscape.

You will learn:

The importance of long-term support (LTS) for Kubernetes and how it can alleviate the challenges associated with the platform's rapid release cycles.
Strategies for managing Kubernetes upgrades, including insights into the release cycle and the potential pitfalls of the upgrading process.
The role of managed services and semi-automatic upgrades in simplifying Kubernetes maintenance for organizations, especially in cost optimization and resource constraints.
The implications of charging for support of older Kubernetes versions and the potential for a community-based approach to navigating the complexities of Kubernetes upgrades.

Sponsor

This episode is sponsored by LearnKube — expert Kubernetes training for your team

More info

Find all the links and info for this episode here: https://ku.bz/dVJW_qgF2
Interested in sponsoring an episode? Learn more.

Clusters are cattle until you deploy ingress, with Dan Garfield Mar 19, 2024

Show notes

Ensuring the repeatability of your infrastructure is a crucial aspect of managing Kubernetes clusters.

This allows you to swiftly tear down and set up a new one, a practice that is quite handy.

However, there are exceptional circumstances when your cluster becomes more than a disposable tool.

Dan shared, "A Kubernetes cluster will be treated as disposable until you deploy ingress, and then it becomes a pet."

In this episode, you will delve into the concept of 'disposable' and 'pet' Kubernetes clusters and learn:

How you can use GitOps to create a repeatable infrastructure that syncs.
How resources such as the Ingress and external-dns require careful maintenance and monitoring to make your cluster special.
How Crossplane and vCluster help you define repeatable environments that are disposable.
All the flavours for Argo: Workflows, Autopilot, CD, etc., and "Project" a newer abstraction to manage apps across environments.

Sponsor

This episode is sponsored by LearnKube — become an expert in Kubernetes

More info

Find all the links and info for this episode here: https://ku.bz/m3YNgCh1W
Interested in sponsoring an episode? Learn more.

eBPF, sidecars, and the future of the service mesh, with William Morgan Mar 12, 2024

Show notes

Service meshes and the community's opinion of them have changed drastically over the years.

From being perceived as unnecessary, complicated and bloated, they matured into security and observability powerhouses (while still retaining much of their complexity).

In this KubeFM episode, William deep dives into the world of service meshes and explains a few of the technical choices and trade-offs of service meshes in simple terms.

You will learn:

What is a service mesh and its design (i.e. control plane and data plane).
How Ambient mesh departs from the traditional sidecar model and how it affects reliability and security.
Why there's more than just eBPF in sidecarless service meshes and the limitation of this technology.
The direct costs (compute) and human factors involved in operating a service mesh.

Sponsor

This episode is sponsored by LearnKube — become an expert in Kubernetes

More info