Spotlight

How an Admin Cluster Keeps Application Clusters in Sync with GitOps

De.Code – Deloitte Germany Engineering Blog

This case study shows how Deloitte built a multi-cluster Kubernetes platform on STACKIT with an admin cluster, Argo CD ApplicationSets, GitLab pipelines, and shared platform tooling.

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Tools and utilities

  • LFK: lightning-fast Kubernetes terminal navigator

    LFK is a keyboard-first terminal UI for navigating Kubernetes clusters with a Miller-column layout, owner-based resource hierarchy, logs, Helm, ArgoCD, Trivy, RBAC, and crash investigation views.

  • SloK: Kubernetes-native SLO operator

    SloK lets teams define SLOs as Kubernetes custom resources, generate Prometheus rules, track error budgets, backtest SLO YAML, and view reliability trends in a dashboard.

  • Radar: Kubernetes visibility

    Radar provides Kubernetes cluster visibility through topology graphs, event timelines, and service traffic visualization running as a single binary that connects directly to the Kubernetes API without cluster-side installation.

  • Copy Fail Destroyer: DaemonSet mitigation for kernel page-cache exploits

    Copy Fail Destroyer runs on Kubernetes nodes to detect and remediate Copy Fail and Dirty Frag by probing vulnerable kernel modules, unloading them, exposing metrics, and supporting Helm or ArgoCD deployment.

  • k8s-d2: Kubernetes visualization

    k8s-d2 generates D2 diagram files from Kubernetes cluster topology, visualizing namespaces, workloads, services, and their relationships with customizable grid layouts and filtering options.

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The Hidden Cost of Slow Autoscaling
The Hidden Cost of Slow Autoscaling

Forced platform migrations are usually treated as something to survive. At Scout24, a mandatory OS migration became an opportunity to rethink Kubernetes autoscaling, node provisioning, and infrastructure efficiency.

John Ford explains how Scout24 moved its EKS-based Infinity platform from a polling autoscaler and over-provisioned capacity to Karpenter and Bottlerocket. The result was faster node startup, a safer migration path, and about a 30% infrastructure reduction without major downtime.

In this interview:

  • Why two-minute node provisioning forced a 25% capacity buffer
  • How Karpenter made the Bottlerocket migration safer
  • What broke around EC2 metadata, AWS SDKs, and cgroups
  • How the new foundation enables Spot, ARM, and GPU workloads

Learn from production

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Matching jobs

    • Data Engineer with K2 Space

    • Salary: $160K to $200K a year

    • Location: based in the office in Los Angeles, CA, USA

    • Tech stack: Kubernetes, AWS, Docker, SQL, PostgreSQL, Snowflake

    • DevOps Engineer with Caseware

    • Salary: $125K to $140K a year

    • Location: based in the office (and remote from home) in Toronto, ON, CA

    • Tech stack: Kubernetes, AWS, Helm, Flux, Docker, Java, Python, Typescript, GitHub Actions

    • DevOps Engineer with K2 Space

    • Salary: $165K to $215K a year

    • Location: based in the office in Los Angeles, CA, USA

    • Tech stack: Kubernetes, AWS, Azure, GCP, Helm, ArgoCD, Flux, Docker, Powershell, Python

    • DevOps Engineer with Neros Technologies

    • Salary: $165K to $231K a year

    • Location: based in the office in Torrance, CA, USA

    • Tech stack: Kubernetes, Azure, Docker, C++, Python, Cloudformation, Terraform

    • DevOps Engineer with Serval

    • Salary: $49.5K to $539K a year

    • Location: based in the office in San Francisco, CA, USA

    • Tech stack: Kubernetes, AWS, Azure, GCP, On-premise, Docker, Go, Python, Terraform, Datadog

Discover more Kubernetes jobs on Kube Careers →

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    The Call For Paper is open until 16 July 2026 at GMT-4. More info →
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    • The conference starts on the 20 November 2026.

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    Subsurface 2026 — The Open Data and AI Conference

    The Call For Paper is open until 17 July 2026 at GMT-4. More info →
    • This is a virtual event

    • Online conference organized by Dremio.

    • The conference starts on the 2 October 2026.

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    Devopsdays Cairo

    The Call For Paper is open until 17 July 2026 at GMT-4. More info →
    • Location: Cairo, EG

    • In-person conference organized by Devopsdays.

    • The conference starts on the 26 September 2026.

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    Kubernetes Community Days Sofia 2026

    The Call For Paper is open until 18 July 2026 at GMT-4. More info →
    • Location: Sofia, BG

    • In-person conference organized by KCD Sofia.

    • The conference starts on the 29 September 2026.

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    WeAreDevelopers Conference India

    The Call For Paper is open until 24 July 2026 at GMT-4. More info →
    • Location: Bengaluru, IN

    • In-person conference organized by WeAreDevelopers.

    • The conference starts on the 26 November 2026.

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    ContainerDays & AI Context Singapore

    The Call For Paper is open until 31 July 2026 at GMT-4. More info →
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    • In-person conference organized by ContainerDays.

    • The conference starts on the 28 October 2026.

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    Cloud Native Summit APAC 2026

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