Systems knowledge you can put to work.

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• Kubernetes Cluster operations, workloads, policy, and day-two troubleshooting.
• Rancher & RKE2 Install, upgrade, and run Rancher-managed RKE2 clusters.
• Linux & Systems Administration, kernel behavior, and the host layer under your workloads.
• Networking Load balancing, DNS, segmentation, and tracing packets end to end.
• Storage & Databases Persistent volumes, replication, backup, and recovery that holds up.
• Observability & SRE Metrics, logs, alerting, and reliability practice for production.

Reference designs

• Rancher on Small RKE2 Cluster Deploy Rancher on a highly available three-node RKE2 cluster on your own servers, with Traefik ingress, …
• Provisioning an RKE2 Cluster on Custom VMs Create a Rancher-managed RKE2 custom cluster on VMs or servers you provision yourself, using the node …
• Ingress NGINX Controller on RKE2: Retirement and the Traefik Default How ingress works on RKE2 now that Ingress NGINX is retired: Traefik is the default from v1.36, how to …

Latest writing

• Demystifying Kubelet Configuration: The New /flagz Endpoint in Kubernetes v1.33

  Nov 6, 2026 · 6 min read

  If you’ve ever spent hours trying to figure out why a Kubernetes node is behaving differently than expected, you know the frustration of digging through logs, SSH sessions, and …

  • Kubernetes
  • Operations

• Kubernetes v1.37 DRA: Extended Resources GA, Device Taints

  Nov 5, 2026 · 6 min read

  Kubernetes v1.37 (released 2026-08-26) is the release where Dynamic Resource Allocation (DRA) can replace a device plugin without touching existing workloads: a Pod that asks for …

  • Kubernetes

• Live Pod Resizing in Kubernetes: A Practical Guide to InPlacePodVerticalScaling

  Nov 4, 2026 · 9 min read

  One of Kubernetes’ longstanding limitations has been the inability to change a running pod’s resource allocations without completely restarting it. For stateless applications …

  • Kubernetes
  • Performance

• Go 1.27: Generic Methods, encoding/json/v2 and uuid

  Nov 3, 2026 · 7 min read

  Go 1.27 shipped on 2026-08-19 (the current patch release is 1.27.3). It is the release where methods can finally have their own type parameters, encoding/json moves onto the v2 …

  • Go
  • Programming

• Reddit Kubernetes Cluster Upgrade Failure: When Updates Take Down Production

  Nov 2, 2026 · 19 min read

  On March 14, 2023, Reddit experienced a multi-hour production outage affecting their entire platform during what should have been a routine Kubernetes cluster upgrade. The incident …

  • Kubernetes
  • Operations

• docker system prune -a --volumes: What It Deletes and How to Run It Safely

  Oct 27, 2026 · 10 min read

  docker system prune -a --volumes is the biggest single cleanup command in the Docker CLI, and it is also the one most often run without knowing what it will take. This guide covers …

  • Docker
  • Containers

• Plex Media Server CVE-2026-96656 (CISA KEV): Check, Investigate and Patch

  Oct 27, 2026 · 14 min read

  On 2026-10-20, CISA added four Plex Media Server vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: CVE-2026-96656, CVE-2026-96654, CVE-2026-96655 and …

  • Security
  • Network Security

• Setting Up the Linode (Akamai) Cloud Provider for RKE2

  Oct 26, 2026 · 7 min read

  Introduction RKE2 runs fine on plain Linode instances, but without a cloud provider the cluster knows nothing about the platform underneath it. Service type=LoadBalancer stays …

  • RKE2 Training

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