Warning and Critical Are Different Response Contracts
A production-engineering deep dive into warning and critical are different response contracts, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
alerting
Grouping and Inhibition Stop One Failure Becoming Twenty Pages
A production-engineering deep dive into grouping and inhibition stop one failure becoming twenty pages, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
Multi-Window Burn-Rate Alerts on a Tiny Self-Hosted Stack
A production-engineering deep dive into multi-window burn-rate alerts on a tiny self-hosted stack, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
Who Does What When an Alert Fires
The value of an alert is not limited to detecting failure. It also includes what someone is expected to do after the signal arrives. If ownership is vague, even an accurate alert becomes just another piece of noise.
SSH Failure Alerts Need Warning and Critical Bursts
A few failed SSH logins are normal on an administered server, while a rapid burst can indicate brute-force activity or a broken automation credential.
What Prometheus `for:` Really Buys You—and What It Cannot
A production-engineering deep dive into what prometheus `for:` really buys you—and what it cannot, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
Fast Burn and Slow Burn Are Different Incidents
A production-engineering deep dive into fast burn and slow burn are different incidents, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
Alert Fatigue Is an Architecture Bug
A production-engineering deep dive into alert fatigue is an architecture bug, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
Every Alert Should Suggest the Next Investigation
A production-engineering deep dive into every alert should suggest the next investigation, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
Threshold Alerts vs Symptom Alerts
A production-engineering deep dive into threshold alerts vs symptom alerts, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
The `for` Clause Is an Anti-Flap Tool, Not Decoration
CPU, packet loss and endpoint probes can cross thresholds for a few seconds during harmless transitions or deployment activity.
Why 99.9% Uptime Does Not Tell Me When to Wake Someone Up
A production-engineering deep dive into why 99.9% uptime does not tell me when to wake someone up, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.
Resolved Notifications Are Part of the Incident Lifecycle
A production-engineering deep dive into resolved notifications are part of the incident lifecycle, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.