Practical articles on AI, DevOps, Cloud, Linux, and infrastructure engineering.
A condensed checklist of the systemd unit-file patterns we now use everywhere, with the production reasons each one matters.
A systematic approach to debugging Linux network issues. The tools that earn their place and the order I use them in.
A practical Linux performance tuning playbook for production servers. The kernel parameters, disk and network tweaks that earn their place, and the ones that turned out to be folklore.
A practical guide to writing and managing systemd services for production. The unit file features that earn their place, plus the operational workflows.
Run services reliably with systemd: units, dependencies, and resource limits.
Container performance problems usually live in the node kernel, not your app. Here is what we tune, why, and how we measure before touching anything.
We had four different patch cadences across our fleet and routinely missed CVEs by weeks. The unified workflow that finally caught up.
Concrete systemd unit patterns that reduced flakiness: restart policies, resource limits, and structured logs.
Set up comprehensive Linux system monitoring using Prometheus and Grafana. Monitor CPU, memory, disk, network, and application metrics with beautiful dashboards.
When everything seems "slow," a baseline gives you something to measure against. The capture-and-compare workflow we use on every Linux host.
We replaced three kernel-level monitoring tools with a small set of eBPF programs. What it bought us, what it cost, and where we still use the old stuff.
Bash patterns beyond the basics: arrays, traps, process substitution, parameter expansion. The features that earn their place when scripts grow.
