Brock Mowry, CTO @ Tintri, discusses the practical considerations when choosing between single cluster multi-tenancy and dedicated clusters per tenant.

He explains why single cluster multi-tenancy requires extensive RBAC configuration and granular security work to properly isolate tenants, making it operationally complex.

From a service provider perspective, Brock advocates for dedicated clusters per tenant as the simpler approach - allowing for templated Kubernetes environments that can be quickly provisioned.

Watch the full interview: https://ku.bz/F6X3C5Nvg

This interview is a reaction to Artem Lajko's episode https://ku.bz/zp0L7-xM4

John Howard, Senior Software Engineer at Solo.io, compares different network encryption approaches in Kubernetes and explains why CNI-based options like IPsec and WireGuard aren't equivalent to TLS.

He clarifies that IPsec and WireGuard typically provide node-to-node encryption rather than workload-to-workload encryption, resulting in less granular identity verification for zero-trust environments. John discusses practical considerations, including FIPS compliance requirements for government use cases and feature trade-offs when implementing IPsec with CNIs like Cilium. He debunks performance misconceptions, explaining that mTLS often outperforms WireGuard despite kernel-level implementation advantages, with benchmarks showing similar latency but 3-4× better throughput for mTLS due to hardware-optimized TLS processing.

Watch the full episode: https://kube.fmhttps://ku.bz/sk-ZF1PG9

KubeUser is a Kubernetes native operator that manages users, certificates, RBAC, and kubeconfigs declaratively for small teams that want simple cluster access without a full IAM or OIDC stack.

More: https://ku.bz/qnbH0j751

How do you build SaaS-style workflows with Kubernetes APIs without turning one CRD into a dumping ground?

Alexander Held, former platform engineer at Mercedes-Benz Tech Innovation, explains how a production platform moved from a 2,000-line CRD to purpose-built resources and controllers.

You will learn:

- Why monolithic CRDs create performance and troubleshooting problems
- How controllers turn database provisioning and backups into reconciliation loops
- How finalizers clean up external resources such as S3 backups
- Why Kubernetes events make platform workflows easier to debug

Watch (or listen to) it here: https://ku.bz/TGy4Qn7Qs

🌟 This episode is brought to you by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person or remote training: https://learnkube.com/training

With @Birthmarkb

This article explains how one team evaluated Crossplane and KRO to replace KIAM with EKS Pod Identities, balancing flexibility, maturity, and operational overhead after outages.

More: https://ku.bz/3tgpCxcm3

This week on Learn Kubernetes Weekly 181:

🔥 Benchmarking Kubernetes log collectors: vlagent, Vector, Fluent Bit, OpenTelemetry collector, and more
🔥 Exploring ListenerSet in Gateway API v1.5
🔥 X-Ray Vision for GPUs: eBPF Monitoring on Kubernetes
🔄 The Invisible Rewrite: Modernizing the Kubernetes Image Promoter
💾 In-place PVC re-binding: zero-downtime disk migration on Kubernetes

Read it now: https://kube.today/issues/181

⭐️ This issue is brought to you by Dash0 — OpenTelemetry-native observability that takes minutes, not months. Full visibility into your logs, metrics, and traces with no lock-in and transparent pricing https://ku.bz/_n4B_yTWF

Mike Stefaniak, Head of Product, Kubernetes and Registries at Amazon Web Services (AWS), discusses the current limitations and future requirements for giving AI assistants write access to Kubernetes resources.

Mike identifies two critical barriers preventing autonomous AI actions in production: insufficient fine-grained security controls in current Kubernetes authorization systems and unresolved hallucination problems in AI models.

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

PII-Shield is a sidecar that sanitizes logs before they leave the pod by detecting secrets and personal data, preserving JSON structure, and supporting Helm based deployment..

More: https://ku.bz/V2B6Gqksv

This week's 6 best Kubernetes vacancies that focus on security are:

DevSecOps Engineer with Anthropic
💰 $405K to $485K a year
Remote from the United States of America
→ https://ku.bz/wrrnmcjDQ

DevSecOps Engineer with OpenAI
💰 $364.5K to $490K a year
Remote from the United States of America
→ https://ku.bz/NXd17JHfV

DevSecOps Engineer with Faire
💰 $268K to $368.5K a year
Remote from the United States of America, Canada, the United Kingdom (+1 more)
→ https://ku.bz/6dD8HVYdT

DevSecOps Engineer with Mercor
💰 $130K to $500K a year
On-site in San Francisco, CA, USA
→ https://ku.bz/Hs5qfr1h2

DevSecOps Engineer with Perplexity
💰 $220K to $405K a year
Fully remote
→ https://ku.bz/rnYh0TMpt

👉 Browse 6817 jobs on Kube Careers https://kube.careers

This case study shows how Unitary built Osmia, an open-source orchestration layer on EKS to run autonomous AI coding agents safely at scale using pod isolation, Karpenter, IRSA-based secrets, and real-time trajectory scoring.

More: https://ku.bz/lyr0QGf1f

Siclaw is an open source AI SRE platform for read-only infrastructure diagnostics, root cause analysis, team workflows, Kubernetes access, and MCP-based investigation without changing live systems directly.

More: https://ku.bz/cSX5czD5y

We published a new page for companies that want to work with LearnKube:
https://learnkube.com/for-marketers

Some LearnKube projects are too large to make alone.

The GPU ebooks we published recently are a good example:
https://learnkube.com/books

They are free because sponsors helped fund the research, writing, production, webinars, and distribution behind them.

We want to keep creating ambitious technical education for Kubernetes and platform engineering teams.

We already have ideas we’d like to develop around AI infrastructure, Kubernetes resource optimization, platform engineering, and general Kubernetes education.

If your company wants to support these efforts and reach Kubernetes practitioners with useful technical content, we’d like to talk:
https://learnkube.com/for-marketers

This tool runs inside Kubernetes and automatically decrypts secrets encrypted with Mozilla SOPS, and then creates standard Kubernetes Secret objects from them.

More: https://ku.bz/fy2bXhv9X

What happens when an AI agent stops generating Kubernetes YAML and starts operating the cluster directly?

Mike Solomon from AIATELLA explains how his team moved from sprawling Helm charts to Markdown-driven infrastructure specs that Claude Code can execute, test, and refine.

You will learn:

- Why Helm became hard to maintain for a fast-moving medical infrastructure repo
- How Claude debugged Argo, TLS conflicts, kubectl patches, and private registry credentials
- How runbooks and agent memory files capture failures so deployments become reproducible

Watch (or listen to) it here: https://ku.bz/y70mLvWNs

🌟 This episode is brought to you by LearnKube — get started on your Kubernetes journey through comprehensive online, in-person or remote training. https://learnkube.com/training

With @Birthmarkb

This tutorial teaches how to eliminate static kubeconfig files by configuring HashiCorp Vault as an OIDC provider for authentication with dynamic, short-lived tokens.

More: https://ku.bz/m2GQwKDZl

This week on Learn Kubernetes Weekly 182:

🔄 We built a self-healing registry mirror (because Docker Hub rate limits are no fun)
💰 Our Kubernetes Cluster Was Costing $14,850/Month. We Moved to Fly.io for $680.
🦈 Kubeshark: Making Packet Level Visibility in Kubernetes
⏱️ Running Temporal.io on Kubernetes in Production — What Nobody Tells You
📊 What 6 Months of Tracking a Production OpenShift Cluster Revealed About Kubernetes

Read it now: https://kube.today/issues/182

⭐️ This newsletter is brought to you by LearnKube — master Kubernetes with hands-on training designed for engineers who want to learn the smart way https://ku.bz/hypSbyc-V

Warden is an open source runtime access gateway that lets AI agents, pods, pipelines, and services use identity-based policies to reach cloud APIs, databases, and storage without storing long-lived credentials.

More: https://ku.bz/KTFVJj-Tv

This article introduces KubeUser, an open source Kubernetes operator that automates user certificate, RBAC, and kubeconfig creation from a declarative custom resource.

More: https://ku.bz/t3c88n2-h

Trupositive is a wrapper that automatically tags Terraform and CloudFormation resources with Git commit SHA, branch, and repository metadata for auditability and infrastructure traceability.

More: https://ku.bz/jy_MxscNM

We published a Kubernetes production-readiness checklist for teams preparing workloads for production.

The checklist is designed to help platform and application teams review the Kubernetes-specific behavior that affects an application before it goes live.

It includes:

- An interactive checklist
- Detailed explanations for each production-readiness check
- A downloadable PDF worksheet

It walks through five areas:

- The contract between your application and Kubernetes
- The manifests that define how Kubernetes should run it
- The workload security posture
- Scaling behavior under load
- Operational checks after launch

Open the checklist:
https://learnkube.com/production-best-practices

If you want a guided review, LearnKube also offers a Kubernetes Production Readiness Review with one of our instructors:
https://learnkube.com/production-readiness-review