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Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 3525 posts
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Istio Observability Internals: Metrics, Tracing, Logging
Analyzes the internal implementation of Istio observability. Covers Envoy stats generation, Istio standard metrics, Telemetry API v2, distributed tracing span propagation, access logging, and Kiali/Prometheus/Grafana/Jae
2026-03-20 · 8 min read #istio#service-mesh#open-source-internals[Golden Kubestronaut] CGOA Practice Exam 80 Questions - Certified GitOps Associate ♪ Listenable
80 practice questions for CGOA toward Golden Kubestronaut. Covers all domains including GitOps principles, ArgoCD, Flux, and Git workflows.
2026-03-20 · 33 min read #kubernetes#golden-kubestronaut#gitops#cgoa#argocd[Golden Kubestronaut] PCA Practice Exam 80 Questions - Prometheus Certified Associate ♪ Listenable
80 practice questions for PCA (Prometheus Certified Associate) certification toward Golden Kubestronaut. Covers all domains including Prometheus architecture, PromQL, alerting, service discovery, and storage.
2026-03-20 · 33 min read #kubernetes#golden-kubestronaut#prometheus#pca#certification[Golden Kubestronaut] ICA Practice Exam 80 Questions - Istio Certified Associate ♪ Listenable
80 practice questions for the ICA exam toward Golden Kubestronaut. Covers Istio architecture, traffic management, security, and observability across all domains.
2026-03-20 · 30 min read #kubernetes#golden-kubestronaut#istio#service-mesh#ica[Golden Kubestronaut] CKA Extra 30 Practice Questions - Advanced Scenarios
30 additional advanced scenario questions for CKA exam preparation. Covers etcd backup/restore, kubeadm upgrade edge cases, complex RBAC scenarios, NetworkPolicy troubleshooting, CSI drivers, kubelet configuration, API s
2026-03-20 · 15 min read #kubernetes#golden-kubestronaut#cka#certification[DevOps] Complete Guide to Stub and Mocking Servers: From Concepts to Practice
A comprehensive guide covering the differences between Stub and Mock, comparison of major mocking tools (WireMock, MockServer, json-server, Prism), practical setup, and CI/CD integration.
2026-03-20 · 14 min read #devops#testing#mocking#stub#wiremockHelm Template Engine Deep Dive: Go Templates, Sprig, Named Templates
Deep dive into Helm template engine internals. Covers Go template parsing and execution pipeline, Sprig library functions (string, math, date, crypto, list, dict), named templates with define/template/include, flow contr
2026-03-20 · 6 min read #helm#kubernetes#open-source-internalsHelm Chart Design Best Practices: Naming, Values Design, GitOps Integration
Comprehensive Helm chart design best practices. Covers naming conventions and label standards (app.kubernetes.io/), values design strategies, multi-environment management, subcharts vs umbrella charts, GitOps integration
2026-03-20 · 2 min read #helm#kubernetes#open-source-internalsetcd Watch and Lease Mechanism Analysis
Deep analysis of etcd Watch and Lease mechanisms. Covers watchable store internals, event history and generation, gRPC streaming, compacted revision handling, Lease grant/revoke/keepalive, TTL implementation, and Kuberne
2026-03-20 · 4 min read #etcd#distributed-systems#open-source-internalsetcd Cluster Operations: Disaster Recovery and Performance Tuning
Covers essential etcd cluster operations including member management (add, remove, learner promotion), snapshots and backup/restore, disaster recovery (quorum loss, data corruption), and performance tuning (disk latency,
2026-03-20 · 4 min read #etcd#distributed-systems#open-source-internalsetcd Storage Engine: BoltDB and MVCC
Deep analysis of etcd storage engine internals. Covers BoltDB B+ tree structure, page types, transaction model, MVCC revision, key index, generation concepts, compaction and defragmentation, and backend batch optimizatio
2026-03-20 · 5 min read #etcd#distributed-systems#open-source-internalsetcd Architecture Internals: Raft Consensus Algorithm
A deep dive into etcd core architecture. Covers the Raft consensus algorithm (leader election, log replication, safety guarantees), internal structures like EtcdServer, raftNode, and apply loop, BoltDB-backed MVCC key-va
2026-03-20 · 6 min read #etcd#distributed-systems#open-source-internalsetcd and Kubernetes: API Server Integration Analysis
Analyzes etcd and Kubernetes API Server integration. Covers how kube-apiserver uses etcd (storage backend, codec, transformer), key hierarchy (/registry/ prefix), API Server Watch Cache (cacher, watchCache, store), etcd
2026-03-20 · 3 min read #etcd#distributed-systems#open-source-internals[Virtualization] 09. Virtualization Platform Comparison: QEMU vs VirtualBox vs VMware vs KubeVirt
A comprehensive comparison of four major virtualization platforms across architecture, GPU support, performance, licensing, and use cases. A guide to choosing the optimal platform.
2026-03-20 · 8 min read #virtualization#kubernetes#gpu[Virtualization] 06. KubeVirt: Running VMs on Kubernetes
Learn how to run virtual machines natively on Kubernetes clusters with KubeVirt. A practical guide covering CRDs, architecture, CDI, networking, and live migration.
2026-03-20 · 8 min read #virtualization#kubernetes#gpu[Virtualization] 03. VirtualBox and VMware: From Desktop to Enterprise
VirtualBox architecture and limitations, VMware product lineup (ESXi, Workstation, Fusion), the vSphere ecosystem, and vGPU support compared.
2026-03-20 · 8 min read #virtualization#infrastructure#cloud[Prometheus] Service Discovery Mechanism: Complete Analysis
Complete analysis of Prometheus service discovery internals. Covers Discovery Manager architecture, Provider interface, kubernetessd watch mechanism, relabeling internals, filesd and HTTP SD, and the target lifecycle at
2026-03-20 · 9 min read #prometheus#observability#open-source-internals[Prometheus] Alerting Pipeline: From Rule Evaluation to Alertmanager Delivery
Deep dive into the Prometheus alerting pipeline internals. Covers Rule Manager evaluation mechanism, Alert state machine (inactive/pending/firing/resolved), for duration, Alertmanager internals (routing tree, inhibition,
2026-03-20 · 10 min read #prometheus#observability#open-source-internalsHelm Release Lifecycle: install, upgrade, rollback Internals
Analyze the complete Helm release lifecycle. Covers Secret-based release storage, install/upgrade/rollback flows, Hook system (pre-install, post-install, etc.), Three-way Strategic Merge Patch, atomic installs, and the -
2026-03-20 · 3 min read #helm#kubernetes#open-source-internalsHelm Architecture Internals: Design Philosophy and Structure of Helm 3
Deep dive into Helm 3 architecture internals. Covers the client-only architecture after Tiller removal, Secret/ConfigMap-based release storage, chart structure (Chart.yaml, values.yaml, templates/), Go template engine, a
2026-03-20 · 7 min read #helm#kubernetes#open-source-internals