A practical guide to installing Prometheus, Node Exporter, and Grafana on Ubuntu 22.04 for real-time server monitoring. Covers scrape target configuration, importing a pre-built dashboard (ID 1860), and setting up CPU/RAM threshold alerts.
A step-by-step guide to installing Graylog with Docker Compose to centralize logs from multiple Linux servers into one place. Covers rsyslog configuration, the Docker GELF logging driver, and setting up stream alerts — based on 6 months of real production experience.