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Kubernetes
Deep dives on the world's most-deployed orchestrator.
From kubelet internals to release deep-dives, scheduling, networking, and operators. Practitioner-led writing on Kubernetes from the Kubesimplify community.
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Kubernetes 1.23 + containerd
Setup Kubernetes 1.23 with containerd as the container runtime on Ubuntu 20.04 machines with single controlplane and three worker nodes.
What Actually Happens When kube-scheduler Picks a Node (13 Stages Inside Kubernetes)
How kube-scheduler picks a node: 13 framework stages, 14 Filter plugins, 9 Score plugins, live preemption demo.
How a Kubernetes Service Actually Works (and All 5 Types You Need)
A pod gets created. It gets an IP. Then it dies. A new pod replaces it. New IP. Now imagine you have ten pods of the same app, and they restart all the…
Understanding etcd in Kubernetes: A Beginner's Guide
Etcd is a key-value data store used to store and manage the critical information that distributed systems need. It provides a reliable way of storing the…
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Zero Trust in Practice: Migrating from Istio Sidecar to Ambient Mode
A hands-on comparison of Istio sidecar and ambient mode for zero-trust service mesh. Same app, same policy, two architectures proven step by step on a local cluster.
I Ran an AI SRE Copilot on My Own Hardware. Here Is What It Actually Does.
Running NudgeBee v1.4.0 end to end - a self-hosted AIOps platform behind AI-SRE, AI-FinOps, AI-K8sOps, and agentic automation - on a Mac, a kiac cluster, and a DGX Spark.
HAMi Dynamic MIG on RTX PRO 6000: A Live Kubernetes Test
Hands-on HAMi Dynamic MIG test on Kubernetes and RTX PRO 6000 Blackwell: setup commands, real allocations, mixed profiles, reclamation, and recovery.
Devin Outposts on Kubernetes: Why Your AI Agent Needs Your Cluster
Devin Outposts runs AI coding agent sessions as pods on your own Kubernetes cluster, with an open-source operator to manage the fleet.
How to Share GPUs in Kubernetes at Scale with HAMi (Software vGPU Slicing)
Share NVIDIA GPUs in Kubernetes with HAMi software vGPU slicing: memory and compute limits, Helm configuration, a verified PyTorch manifest, a real RTX PRO 6000 OOM test, and Prometheus monitoring.
Slicing GPUs in Kubernetes with NVIDIA Multi-Instance GPU (MIG)
GPU sharing in Kubernetes explained: time-slicing vs MPS vs MIG, every nvidia-smi command to enable and disable MIG on one GPU or eight, GPU Operator automation, pitfalls, and DCGM monitoring.
Introducing kiac: Real Kubernetes Nodes on Your Mac, Each Its Own Lightweight VM
kiac runs local Kubernetes on macOS where every node is its own lightweight VM via apple/container: kubeadm or k3s flavors, Cilium on a custom kernel, built-in LoadBalancer, Grafana, Gateway API, and clusters that survive reboots.
LLM Costs and Observability with agentgateway on Kubernetes (Part 2)
Part 2: scrape agentgateway with Prometheus, build a Grafana dashboard of token cost and per-tool usage, see blocked tool calls, and alert on spend.
Controlling MCP Tools with agentgateway on Kubernetes (Part 1)
Run AI agents behind agentgateway on Kubernetes: route their LLM and MCP tool calls through one proxy, keep secrets out of the agent, and block tools by policy.
How kube-proxy Actually Works: iptables, IPVS, and nftables Inside Out
How kube-proxy turns Kubernetes Services into kernel rules. iptables, IPVS, nftables packet paths and which to pick in 2026. Verified against k/k 1.36 source.
How Kubernetes EndpointSlices Actually Work (and Why Endpoints Had to Die)
A Service has no pod IPs in it. We covered that in the last post. So somewhere, something is keeping a list of every pod IP that matches the Service's…
NVCF Is Now Open Source: Inside NVIDIA's GPU Function Platform
NVIDIA just open-sourced the full NVCF platform under Apache 2.0. Not a thin SDK, not a client library. The actual control plane, invocation plane,…
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