whoami
Deep technical notes on operating systems, virtualization, cloud infrastructure, kernels, filesystems, emulation, and the history behind essential tools.
Choose Azure Pipelines expression phases correctly, build conditional YAML, diagnose stale values, and keep template inputs within clear trust boundaries.
Review Docker Buildx Bake inheritance, matrix expansion, merged files, and --print output before parallel builds alter a release plan.
Diagnose Cloud Native Buildpacks cache misses by tracing lifecycle phases, layer metadata, cache-image wiring, and builder trust boundaries.
Route builds through Cloud Build private pools while keeping worker selection, caller IAM, build identity, VPC peering, and public egress separate.
Operate Kubernetes CSI inline ephemeral volumes safely by tracing node-side lifecycle calls, scheduling limits, driver attributes, and cleanup failures.
Use the Kubernetes Kubelet Pods API for node-local Pod state while respecting its socket permissions, startup readiness, rate limits, and watch gaps.
Understand how Prometheus instant selectors, stale series, lookback, and absence functions affect dashboards and alerts without mistaking missing data for zero.
Build reliable W3C trace propagation with validated headers, bounded tracestate, explicit OpenTelemetry configuration, and deliberate ingress resets.
Compare IBM and Phoenix descriptions of BIOS INT 15h/AH=4Fh, detect documented support, and avoid assuming one carry-flag contract across machines.
Allocate a bounded real-mode-visible buffer with DPMI 0100h, keep its segment and selector distinct, and release the block through 0101h.
Posts revised with new sources, corrected facts, or fixed links - not just new posts.