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Observability & SRE
Metrics, logs, tracing, error budgets, and reliability engineering culture.
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Observabilidade - o que é, métricas vs logs vs traces e a stack Prometheus + Loki + Grafana
2+ hour, 6+ min ago (313+ words) Por muito tempo, "monitorar" um sistema significava basicamente uma coisa: configurar alguns alertas (CPU alta, disco cheio, processo caiu) e torcer para que eles cubram os problemas que realmente vão acontecer. Isso funciona enquanto o sistema é simples e as…...
Prometheus na prática - scraping, o endpoint /metrics e uma mini app Python expondo métricas
2+ hour, 6+ min ago (344+ words) No primeiro artigo desta série, subimos Prometheus, Loki e Grafana com Docker Compose, mas sem nenhuma aplicação real enviando dados — o Prometheus só monitorava a si mesmo. Este artigo resolve isso: vamos entender como o Prometheus efetivamente coleta métricas de…...
Security Telemetry on a Budget: Building a Practical Elastic Baseline for a Growing Product Team
7+ hour, 22+ min ago (989+ words) Security Telemetry on a Budget How a growing product team turned the Elastic stack it... Tagged with security, kubernetes, devsecops, elasticsearch....
How to Monitor Cron Jobs with a Simple HTTP Health Check
7+ hour, 48+ min ago (409+ words) Cron jobs are great for automating repetitive tasks, but there is one problem: What happens when the job stops running? A cron entry can exist for months without anyone noticing that the script has started failing. For example, you might…...
Why AI Observability Is Becoming a Core Enterprise Technology Capability
2+ day, 23+ hour ago (644+ words) Sunday, 20 September 2026 Enterprise artificial intelligence is moving into a different phase. The question is no longer only whether a model can produce a useful answer in a controlled test. Increasingly, the question is whether an AI-enabled system can be understood,…...
Port 6443 in the Wild: Measuring Public Kubernetes API Endpoint Exposure
8+ hour, 40+ min ago (526+ words) This article answers that question with a ZoomEye measurement and then separates what the number proves from what it does not. The measured result is an exposure count, not a vulnerability count. A host that answers on TCP port 6443 has…...
[Lab Notes] Kubernetes the Hard Way, For Real This Time (Step 07)
10+ hour, 8+ min ago (107+ words) Continuing my Kubernetes the Hard Way homelab build. Steps 01-06 are already done, this covers step 07. This step sets up the etcd cluster. From what I understand, etcd is basically Kubernetes' database, it's where the "state" of the whole cluster gets…...
EULYNX-Based Object Controller and CTC System in the Digirail Project
2+ day, 21+ hour ago (629+ words) The Digirail project introduces the first commercial ERTMS/ETCS Level 2 track section in Finland on the Tampere–Rauma/Pori line. The project is part of Finland’s national railway renewal programme, where signalling and train control are being modernised through a…...
"10 hours" and "around two weeks" are not the same kind of number
12+ hour, 34+ min ago (416+ words) In September 2026, Palo Alto Networks Unit 42 published a case involving an AI-assisted intrusion into an enterprise network. The article includes figures like "less than 10 hours," "more than 50 MITRE ATT&CK techniques," and "around two weeks" for what a human operator…...
Incident Context: tracing production failures without guessing
12+ hour, 24+ min ago (200+ words) This is a submission for the Sanity Challenge, Path One: Ship an Agent That Queries Real Content.... Tagged with devchallenge, sanitychallenge, sanity, ai....