Learn from production

• Migrating legacy PHP monolith apps on Drupal 8 to Kubernetes

  Alexey Demyanov

  This case study shows how Palark migrated high-traffic Drupal 8 monoliths to Kubernetes to improve resilience, autoscaling, deployment automation, and DDoS handling while reducing infrastructure waste.

• How we found 7 TiB of memory just sitting around

  This blog post tells how the Render team:

  • tracked down Kubernetes memory waste caused by many daemonset namespace watches,
  • fixed config issues,
  • and freed over 7 TiB of memory across clusters by reducing unnecessary listwatch overhead.
• 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.

More case studies →

Matching jobs

1. • Data Engineer with Branch

   • Salary: $18K to $266.2K a year

   • Location: remote from

   • Tech stack: Kubernetes, GCP, Python, SQL, Snowflake, Airflow

2. • DevOps Engineer with Box

   • Salary: PLN 14.76K to PLN 521.84K a year

   • Location: based in the office (and remote from home) in Warsaw, PL

   • Tech stack: Kubernetes, AWS, Azure, GCP, Docker, C#, Go, Python, Ruby, Swift

3. • DevOps Engineer with Branch

   • Salary: $81K to $297K a year

   • Location: remote from

   • Tech stack: Kubernetes, GCP, Docker, Go, Java, Python, Terraform, Ansible, Chef

4. • DevOps Engineer with Branch

   • Salary: $108K to $330K a year

   • Location: remote from

   • Tech stack: Kubernetes, GCP, Docker, Go, Java, Python, Airflow, Terraform, Ansible, Chef

5. • DevSecOps Engineer with Bot Auto

   • Salary: $12.6K to $415.14K a year

   • Location: based in the office in Houston, TX, USA

   • Tech stack: Kubernetes, AWS, Go, Javascript, Python, Rust, Typescript, Pulumi, Terraform

Discover more Kubernetes jobs on Kube Careers →

Build something

• Enforcing Signed Container Images in Kubernetes Using Cosign & Kyverno

  Hansaka Biyon

  This tutorial teaches how to enforce signed container images in Kubernetes using Cosign for signing, Harbor for storage, and Kyverno admission controller for verification, including custom CA trust configuration and CI/CD integration patterns.

• From Source to Production with OAuth: The Full Kindling Flow

  Jeff Vincent

  This tutorial shows how to take a multi-service app from local source to a Kubernetes environment with OAuth, TLS, Stripe webhooks, in-cluster CI, and automated deployment using Kindling.

• Sharded multi-cluster cert-manager with multicluster-runtime

  Zach Smith

  This tutorial shows how to build a hub-style multi-cluster cert-manager control plane where a central hub cluster manages certificate issuance and distribution across multiple spoke clusters using cert-manager and trust-manager.

• Kubernetes for Pentesters: Breaking Orchestrated Infrastructure from Zero

  Ruben Santos

  This tutorial teaches Kubernetes security testing from an offensive perspective, covering:

  • pod compromise detection,
  • service account token exploitation,
  • RBAC privilege escalation,
  • and tools like kubeletctl and peirates.

More tutorials →

Call for Papers closing soon

1. 2

   days

   Update Conference Prague 2026

   The Call For Paper is open until 15 June 2026 at GMT-4. More info →

   • Location: Prague, CZ

   • In-person conference organized by Update Conference.

   • The conference starts on the 13 November 2026.

   • Apply here

2. 2

   days

   Kubernetes Community Days San Francisco Bay Area 2026

   The Call For Paper is open until 15 June 2026 at GMT-4. More info →

   • Location: San Francisco, US

   • In-person conference organized by KCD SF Bay Area.

   • The conference starts on the 1 September 2026.

   • Apply here

3. 2

   days

   Devopsdays Barcelona

   The Call For Paper is open until 15 June 2026 at GMT-4. More info →

   • Location: Barcelona, ES

   • In-person conference organized by Devopsdays.

   • The conference starts on the 13 November 2026.

   • Apply here

4. 2

   days

   Devopsdays Portland

   The Call For Paper is open until 15 June 2026 at GMT-4. More info →

   • Location: Portland, OR, USA

   • In-person conference organized by Devopsdays.

   • The conference starts on the 8 September 2026.

   • Apply here

5. 7

   days

   EuroBSDCon

   The Call For Paper is open until 20 June 2026 at GMT-4. More info →

   • Location: Brussels, BE

   • In-person conference organized by EuroBSDCon Foundation.

   • The conference starts on the 13 September 2026.

   • Apply here

6. 9

   days

   Dutch Cloud Native Day

   The Call For Paper is open until 22 June 2026 at GMT-4. More info →

   • Location: Utrecht, NL

   • In-person conference organized by Dutch CND.

   • The conference starts on the 29 October 2026.

   • Apply here

7. 12

   days

   Open Source Summit Europe 2026

   The Call For Paper is open until 25 June 2026 at GMT-4. More info →

   • Location: Prague, CZ

   • In-person conference organized by Linux Foundation.

   • The conference starts on the 9 October 2026.

   • Apply here

More articles

• AWS EKS + Fargate Debugging Story: The Missing DHCP Option Set

  Sergey Goncharov

  This case study walks through a real debugging story on EKS Fargate where missing a DHCP option set caused silent DNS failures and pods stuck in pending — and how to find and fix it.

• Secure APIs by Default: My Real-World Blueprint with Zero Trust, mTLS & Istio Policies

  Siva Bankapalli

  This article shows a Zero Trust blueprint using mutual TLS (mTLS) and Istio security policies to make internal and external APIs secure by default, with step-by-step configs and lessons from real systems.

• Why Your Grafana is Slow on Kubernetes (and 3 Replicas Won’t Fix It)

  Aslanov Javid

  This article shows why Grafana becomes slow on Kubernetes when multiple replicas share SQLite over EFS, and explains why a single replica on block storage or a real external database is the correct fix.

• Running Claude Code as a Kubernetes Job

  Daniel Hnyk

  This article shows how to run Claude Code as a CronJob using a custom Dockerfile, non-interactive mode flags, jq log filtering, and a timeout-based fallback that spawns a second Claude instance to recover partial results.

Even more articles →