Learn from production

• Tracing large job failures to serial console bottlenecks from oom events

  Jack Lindamood

  This case study shows how OOM Killer terminated a critical network daemon on Kubernetes nodes, causing a network outage.

  It covers debugging via serial console and implementing memory reservations to prevent system-critical process termination.

• Three Weeks in the Trenches: Hunting a 4GB Native Memory Leak That .NET Couldn’t See

  Kalyan Josyula

  This case study shows how a team traced repeated pod OOM kills in ASP.NET Core to native memory growth from zombie SignalR connections, glibc fragmentation, and kernel socket buffers.

• Autoscaling Hid Our LLM Cost Regression (85% → 4% Cache Hit Rate)

  Nick Roan

  This case study shows how a single RAG chunk size change collapsed vLLM prefix-cache hit rate from 85% to 4%, triggering an 80% GPU replica increase while latency stayed flat.

  It also includes the fix: adding a two-phase cache replay gate in CI.

• How My Client Hit Linux Kernel Network Limits on AWS EKS

  Dat Ton

  This case study explains how cURL 65 errors and DNS resolution failures on AWS EKS were caused by Linux kernel network limits being exceeded, resolved by increasing netdev_budget, netdev_budget_usecs, and netdev_max_backlog parameters.

More case studies →

Matching jobs

1. • Data Engineer with Backblaze External Website

   • Salary: $7.56K to $203.5K a year

   • Location: remote from

   • Tech stack: Kubernetes, Redis, Ansible

2. • Data Engineer with HHAeXchange

   • Salary: $105K to $115K a year

   • Location: remote within UTC-5 and UTC-3

   • Tech stack: Kubernetes, AWS, Docker, Python, SQL, Snowflake, Airflow

3. • Data Engineer with HHAeXchange

   • Salary: $155K to $184K a year

   • Location: remote within UTC-5 and UTC-3

   • Tech stack: Kubernetes, AWS, Docker, Python, SQL, Snowflake, Airflow

4. • DevOps Engineer with ePlus Technology, inc.

   • Salary: $65K to $90K a year

   • Location: based in the office in Herndon, VA, USA

   • Tech stack: Kubernetes, Azure, Azure DevOps

5. • DevOps Engineer with ePlus Technology, inc.

   • Salary: $32.4K to $330K a year

   • Location: remote from

   • Tech stack: Kubernetes, AWS, Azure, GCP, OpenShift, Python, Terraform, Ansible, Grafana, Prometheus

Discover more Kubernetes jobs on Kube Careers →

Build something

• From ACM to ALB: A Step-by-Step Guide to Managed TLS/SSL in EKS Auto Mode

  Dickson Victor Omasi

  This tutorial shows how to set up TLS-terminated ingress on EKS Auto Mode using ACM and an ALB, skipping the traditional AWS Load Balancer Controller installation and OIDC setup.

• Build a Production-Ready vLLM Inference Server on Kubernetes with AMD Instinct GPUs

  Ojas Singh

  This tutorial teaches how to run a production-ready vLLM inference server on Kubernetes with AMD Instinct GPUs using containerd, the AMD GPU Operator, persistent storage, and MetalLB.

• Designing for Failure with CloudNativePG

  Dylan Da Costa

  This tutorial explains how to design CloudNativePG for production failure by using plugin-based backups, WAL archiving, point-in-time recovery, snapshots, and PgBouncer so recovery is treated as the real operational priority.

• Cilium Network Policies: L7 HTTP Filtering with eBPF on Kubernetes

  Dilan Dashintha

  This tutorial shows how to use Cilium and Hubble to enforce HTTP path based network policies in Kubernetes with eBPF, so you can allow or block specific endpoints without sidecars.

More tutorials →

Call for Papers closing soon

1. 1

   days

   DevOpsDays Istanbul 2026

   The Call For Paper is open until 31 May 2026 at GMT-4. More info →

   • Location: Istanbul, TR

   • In-person conference organized by DevOps Turkey.

   • The conference starts on the 29 September 2026.

   • Apply here

2. 1

   days

   DevOps Midwest 2026

   The Call For Paper is open until 31 May 2026 at GMT-4. More info →

   • Location: St. Louis, MO, USA

   • In-person conference organized by Sketch.

   • The conference starts on the 22 August 2026.

   • Apply here

3. 2

   days

   KubeCon + CloudNativeCon North America 2026

   The Call For Paper is open until 1 June 2026 at GMT-4. More info →

   • Location: Los Angeles, CA, USA

   • In-person conference organized by Linux Foundation.

   • The conference starts on the 26 October 2026.

   • Apply here

4. 2

   days

   Heapcon 2026

   The Call For Paper is open until 1 June 2026 at GMT-4. More info →

   • Location: Belgrade, RS

   • In-person conference organized by heapspace.

   • The conference starts on the 6 November 2026.

   • Apply here

5. 2

   days

   Cloud Native Days Norway

   The Call For Paper is open until 1 June 2026 at GMT-4. More info →

   • Location: Bergen, NO

   • In-person conference organized by CND Norway.

   • The conference starts on the 27 October 2026.

   • Apply here

6. 2

   days

   Devopsdays Istanbul

   The Call For Paper is open until 1 June 2026 at GMT-4. More info →

   • Location: Istanbul, TR

   • In-person conference organized by Devopsdays.

   • The conference starts on the 24 October 2026.

   • Apply here

7. 2

   days

   Kubernetes Community Days Melbourne 2026

   The Call For Paper is open until 1 June 2026 at GMT-4. More info →

   • Location: Melbourne, AU

   • In-person conference organized by KCD Australia.

   • The conference starts on the 4 August 2026.

   • Apply here

More articles

• Why Your KServe InferenceService Won't Become Ready: Four Production Failures and Fixes

  Sodiq Jimoh

  This article explains four KServe readiness failures on k3d, ArgoCD, Knative, and Kourier, with root causes, terminal output, and working patches for production debugging.

• Ansible AWX: Infrastructure Automation on Top of Kubernetes

  Btech Engineering

  This article explains how a team deployed Ansible AWX on K3s and extended it for OpenStack inventory, dynamic SSH users, execution nodes, custom execution environments, and air-gapped installs.

• SRE: Secrets Management in Kubernetes

  Gabriel

  This article explains Kubernetes secrets management from an SRE angle by comparing:

  • Sealed Secrets,
  • External Secrets Operator,
  • and Vault-based approaches with examples.
• Why Kubernetes Has No Login — And How We Solved It for AuditRadar

  hybrid2k3

  This article explains why vanilla Kubernetes has no real login event and shows a practical session-tracking workaround using credential-id fingerprints from audit logs, with a side-by-side comparison against OpenShift OAuth behavior.

Even more articles →