Tag: #2026-03
Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 765 posts
Live Migration 2: The Real Meaning of Pre-copy, Post-copy, Dirty Pages, and Auto-converge
Explains the meaning of pre-copy, post-copy, dirty pages, auto-converge, and pause transitions in the actual data transfer stage of KubeVirt live migration, based on source code.
2026-03-20 · 6 min read #architecture#kubevirt#live-migration#libvirt#qemuHow KubeVirt Runs VMs on Pods
A source-code-level dissection of how KubeVirt runs VMs by reusing Pod scheduling, Pod networking, and Pod storage without modifying Kubernetes itself.
2026-03-20 · 6 min read #architecture#kubevirt#kubernetes#virtualization#qemuCPU, Memory, NUMA, HugePages: How KubeVirt Aligns the Resource Model
Explains how KubeVirt translates VMI CPU and memory requests into launcher Pod resource requests, memory overhead, CPU pinning, NUMA, and hugepages models.
2026-03-20 · 5 min read #architecture#kubevirt#kubernetes#numa#hugepagesHow VMI Spec Gets Converted to libvirt Domain XML
Explains how KubeVirt's converter transforms VMI spec into libvirt domain spec and XML, and how disks, NICs, CPU, and security options are reinterpreted in the process.
2026-03-20 · 5 min read #architecture#kubevirt#libvirt#qemu#domain-xmlvirt-controller Deep Dive: Creating VM Pods with Informers, Queues, and Reconcile
Dissects how virt-controller watches VMIs, Pods, PVCs, and migrations, creates launcher Pods, and propagates state through informers and reconcile loops.
2026-03-20 · 6 min read #architecture#kubevirt#kubernetes#controller#reconciliationVMI Status, Metrics, Guest Agent, Debugging: How KubeVirt Exposes Internal State
Describes how KubeVirt collects and exposes VM internal state through VMI status, guest agent, domain stats, Prometheus metrics, and virt-handler API, based on code analysis.
2026-03-20 · 6 min read #architecture#kubevirt#observability#metrics#guest-agentKubeVirt Network 1: How Pod Networks Become VM Networks
Explains how KubeVirt connects CNI networks attached to Pods to guest NICs through bridge, TAP, DHCP, and NAT layers, and the IP assignment model.
2026-03-20 · 6 min read #architecture#kubevirt#kubernetes#cni#networkingLive Migration 3: Why Migration Proxy, Ports, TLS, and Sockets Are Needed
Explains why KubeVirt places a migration proxy between source and target launchers in live migration, and how it combines ports, Unix sockets, and TLS paths.
2026-03-20 · 5 min read #architecture#kubevirt#live-migration#networking#tlsKVM, cgroup, namespace, tap, netlink: The Kernel Technologies Behind KubeVirt
Describes the roles of Linux kernel technologies -- KVM, cgroup, namespace, TAP, netlink, and VFIO -- that enable KubeVirt to implement VMs on top of Pods.
2026-03-20 · 5 min read #architecture#kubevirt#linux#kvm#cgroupsWhat Do the VM, VMI, and Migration CRDs Represent?
Explains what responsibilities each of KubeVirt's core API types -- VirtualMachine, VirtualMachineInstance, and VirtualMachineInstanceMigration -- has, and why they are separated, based on the source schema.
2026-03-20 · 6 min read #architecture#kubevirt#kubernetes#virtualization#crdUnited Kingdom Complete Guide: Food, Tourism, Culture, History, Economy, IT, Business Travel
A comprehensive guide to the United Kingdom covering food, tourism, culture, history, famous figures, economy, IT ecosystem, and business travel tips.
2026-03-19 · 8 min read #united-kingdom#travel#food#culture#historySweden Complete Guide: Food, Tourism, Culture, History, Economy, IT, Business Travel
A comprehensive guide to Sweden covering food, tourist attractions, culture, history, notable figures, economy, IT ecosystem, and business travel tips.
2026-03-19 · 6 min read #sweden#europe#travel#food#cultureSouth Africa Complete Guide: Food, Tourism, Culture, History, Economy, IT & Business Travel
A comprehensive guide to South Africa covering braai culture, safari tourism, Rainbow Nation heritage, post-apartheid history, economy, IT ecosystem, and essential business travel information.
2026-03-19 · 8 min read #south-africa#travel#food#culture#historySingapore Complete Guide: Food, Tourism, Culture, History, Economy, IT, Business Travel
A comprehensive guide to Singapore covering hawker food to Marina Bay — food, tourism, culture, history, economy, IT ecosystem, and business travel information.
2026-03-19 · 8 min read #singapore#travel#food#culture#historyPortugal Complete Guide: Food, Tourism, Culture, History, Economy, IT, Business Travel
A comprehensive guide to Portugal covering food, tourism, culture, history, famous figures, economy, IT ecosystem, and business travel tips.
2026-03-19 · 7 min read #portugal#travel#food#culture#historyNigeria Complete Guide: Food, Tourism, Culture, History, Economy, IT, and Business Travel
A practical guide to Nigeria covering Jollof rice and Suya, Lagos and Abuja, Nollywood culture, history, economic structure, the IT ecosystem, and essential business travel advice.
2026-03-19 · 3 min read #nigeria#africa#travel#food#cultureNepal Complete Guide: Food, Tourism, Culture, History, Economy, IT & Business Travel
A comprehensive guide to Nepal covering must-try food, top tourist spots, culture and people, history, famous figures, economy, IT ecosystem, and business travel tips.
2026-03-19 · 7 min read #nepal#travel#food#culture#historyMexico Complete Guide: Food, Tourism, Culture, History, Economy, IT & Business Travel
A comprehensive guide to Mexico covering food, tourist attractions, culture and people, history, famous figures, economy, IT/programming ecosystem, and business travel preparation.
2026-03-19 · 9 min read #mexico#travel#food#culture#historyKenya Complete Guide: Food, Tourism, Culture, History, Economy, IT & Business Travel
A comprehensive guide to Kenya covering traditional cuisine (nyama choma, ugali), Masai Mara safari tourism, Swahili culture, Silicon Savannah tech ecosystem, and essential business travel information.
2026-03-19 · 7 min read #kenya#travel#food#culture#historyJapan IT Industry Subcontracting Structure: SIer, SES, and the Pyramid System Explained
A deep dive into Japan unique multi-layered subcontracting (tajuu-shitauke) pyramid structure, the reality of SIer and SES business models, market size, and why Japan remains SI-centric.
2026-03-19 · 10 min read #japan#it#sier#ses#subcontracting