enterprise observability

Build AI-style, budget-friendly Linux monitoring: deploy Prometheus, Grafana and Node Exporter in containers, then add a Bash anomaly detector that learns CPU/memory/load/I/O baselines with Welford’s algorithm and z-scores, alerts via syslog/webhooks, and runs under systemd; includes step-by-step installs, Grafana tips, tuning/hardening, SLO burn-rate guidance, and optional Python extensions.