Learn Kubernetes Weekly issue 191 · 8 Jul 2026
What 4.4% GPU Utilization Means, GKE IP Exhaustion Fix, Evicting MCP Calls, Kubernetes Feedback Loops, You Don’t Have a GIL Problem
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Articles
What Does 4.4% GPU Utilization Actually Mean?
medium.com
This article explains why low GPU utilization during LLM inference can be normal by breaking down prefill, decode, memory bandwidth limits, batching, and GKE B200 benchmark numbers.
GKE IP exhaustion fixed: the Class E migration guide
rack2cloud.com
This tutorial shows how to fix GKE pod IP exhaustion without rebuilding the VPC by adding a Class E secondary range, creating a new node pool, and draining workloads onto nodes that use the new pod CIDR.
Evicting MCP tool calls from your Kubernetes cluster
dev.to
This article explains how to optimize AI agents for Kubernetes diagnostics by shifting from sequential Model Context Protocol tool calls to code execution mode, reducing token usage by up to 90%.
The feedback loops behind Kubernetes
planetscale.com
This article explains Kubernetes operators as feedback controllers, connecting reconciliation, informers, queues, spec/status, and self-healing behavior to database operations.
You Don’t Have a GIL Problem — You Have a CPU Problem
medium.com
This article explains how Kubernetes CPU throttling can amplify Python GIL contention and cause unstable P95/P99 latency even when average CPU and P50 latency look normal.
Stop Manually Generating Kubeconfigs: Meet KubeUser
medium.com
This article introduces KubeUser, an open source Kubernetes operator that automates user certificate, RBAC, and kubeconfig creation from a declarative custom resource.
Is your app actually ready for Kubernetes?
Kubernetes production-readiness checklist to help teams answer that question before going live.
It includes an interactive checklist with a detailed breakdown of each check, plus a downloadable PDF worksheet you can use with your team.
Tutorials
VibeOps: A Secure read-only setup for AI-Assisted Kubernetes Debugging
simon-frey.com
This tutorial shows how to give Claude read-only access to your Kubernetes cluster via a locked-down MCP server so you can use AI for debugging without risking write access or secret exposure.
The Hybrid Cloud Platform Illusion: Why Your On-Prem and Cloud Are Still Strangers
medium.com
This tutorial shows how to connect on-prem Kubernetes workloads to Google Cloud without service account keys using Workload Identity Federation, OIDC, Terraform, Kyverno, and IAM attribute conditions.
medium.com
This tutorial teaches how to build a local observability stack for AWS EKS logs using Stern for multi-pod tailing, Fluent Bit for log processing with multiline parsing, and Elasticsearch with Kibana for searchable visualization via Docker Compose.
Testing Kubernetes Deployments and Operators from Java Without the Usual Boilerplate
medium.com
This tutorial shows how to test Kubernetes deployments and operators from Java on real clusters without heavy boilerplate by using kubetest4j on top of the Fabric8 client.
Kubernetes jobs
Data Engineer with Inter
Salary: $27K to $201.3K a year
Location: based in the office in Belo Horizonte, BR
Tech stack: Kubernetes, Kubernetes, AWS, alerting, CI/CD, Git, compliance, LGPD, security, AWS S3
Software Engineer with Inter
Salary: $47.97K to $257.4K a year
Location: based in the office in Belo Horizonte, BR
Tech stack: Kubernetes, Kubernetes, EKS, AWS, observability, CI/CD, Git, IaC, Containers, Redis
Software Engineer with GoFasti
Salary: $24K to $45.6K a year
Location: remote from
Tech stack: Kubernetes, Kubernetes, Docker, monitoring, logging, Git, JDK, React, Maven, Angular
Software Engineer with GoFasti
Salary: $2K to $3.8K a year
Location: remote from
Tech stack: Kubernetes, Kubernetes, AWS, Docker, Git, Maven, Redis, MongoDB, MySQL, Spring Boot
Site Reliability Engineer with Moniepoint Group
Salary: $26.1K to $193.3K a year
Location: remote from
Tech stack: Kubernetes, Kubernetes, EKS, GKE, GCP, OpenTelemetry, metrics, New Relic, distributed traces, observability
Discover more Kubernetes jobs on Kube Careers →
Code & tools
github.com/mihaigalos
git-change-operator is a Kubernetes operator that enables automated Git operations from within clusters through GitCommit and PullRequest custom resources.
Kubetail: real-time Kubernetes log dashboard
github.com/kubetail-org
Kubetail is a Kubernetes logging tool that streams workload logs into a browser or terminal, merges multi-container logs into one timeline, and works without sending logs to an external service.
github.com/pmady
KEDA GPU Scaler is a KEDA external scaler that reads NVIDIA GPU metrics through NVML and autoscalers vLLM, Triton, training jobs, and custom inference workloads without requiring Prometheus.
Xata: open-source Postgres platform on Kubernetes
github.com/xataio
Xata is a Kubernetes-native Postgres platform for running many databases with copy-on-write branching, scale-to-zero, autoscaling, HA, backups, REST APIs, CLI, and RBAC.
Copy Fail Blocker: BPF-LSM mitigation for Kubernetes
github.com/cozystack
Copy Fail Blocker deploys a privileged DaemonSet that blocks AF_ALG and AF_RXRPC socket creation cluster-wide to mitigate Copy Fail and similar Linux kernel privilege-escalation paths.
Other interesting projects:
Upcoming Kubernetes events
Jul
9
Building a fully open source private cloud with Kubernetes & OpenStack
Online webinar organized by CNCF Online Programs.
This is a virtual event
This is a free event.
Jul
9
Deterministic Node Bootstrapping with Node Readiness Controller
In-person meetup organized by DevOps Meetup Freiburg.
Location: Freiburg im Breisgau, DE
This is a free event.
Jul
10
DevOpsCon Camp: Kubernetes Basic
In-person workshop organized by entwickler.de Akademie.
Location: Berlin, DE
This event requires an entrance fee
Jul
15
Building an Internal Developer Platform for Kubernetes
Online meetup organized by Cloud Foundation Community.
This is a virtual event
This is a free event.
Jul
15
OpenShift Virtualization Networking Deep Dive - Architecture and implementation best practices
Online webinar organized by Red Hat.
This is a virtual event
This is a free event.
Sept
10
Online workshop organized by LearnKube.
This is a virtual event
This event requires an entrance fee
Kubernetes call for papers
23
days
ContainerDays & AI Context Singapore
The Call For Paper is open until 31 July 2026 at UTC. More info →
Location: Singapore, SG
In-person conference organized by ContainerDays.
The conference starts on the 28 October 2026.
- Apply here
8
days
Kubernetes Community Days Porto 2026
The Call For Paper is open until 16 July 2026 at UTC. More info →
Location: Porto, PT
In-person conference organized by KCD Porto.
The conference starts on the 20 November 2026.
- Apply here
6
days
Kubernetes Community Days Gujarat 2026
The Call For Paper is open until 15 July 2026 at UTC. More info →
Location: Ahmedabad, IN
In-person conference organized by KCD Gujarat.
The conference starts on the 19 September 2026.
- Apply here
10
days
Kubernetes Community Days Sofia 2026
The Call For Paper is open until 18 July 2026 at UTC. More info →
Location: Sofia, BG
In-person conference organized by KCD Sofia.
The conference starts on the 29 September 2026.
- Apply here
7
days
Kubernetes Community Days Suisse Romande 2026
The Call For Paper is open until 15 July 2026 at UTC. More info →
Location: Geneva, CH
In-person conference organized by KCD Suisse Romande.
The conference starts on the 10 December 2026.
- Apply here
54
days
The Call For Paper is open until 31 August 2026 at UTC. More info →
Location: Bucharest, RO
In-person conference organized by OmniOpenCon.
The conference starts on the 18 October 2026.
- Apply here
37
days
The Call For Paper is open until 14 August 2026 at UTC. More info →
Location: Paris, FR
In-person conference organized by mate.dev.
The conference starts on the 3 December 2026.
- Apply here
38
days
The Call For Paper is open until 15 August 2026 at UTC. More info →
Location: Buenos Aires, AR
In-person conference organized by Cloud Security Space.
The conference starts on the 9 October 2026.
- Apply here
51
days
The Call For Paper is open until 28 August 2026 at UTC. More info →
This is a virtual event
Online conference organized by ScyllaDB.
The conference starts on the 11 March 2027.
- Apply here
That wraps things up.
Back next Wednesday.
— Gulcan