http://Prometheus.io

• Monitoring with Prometheus Grafana Tutorial (with Mysql exported)
• Monitoring Exim (Exim4) with grok_exporter. The grok_exporter aims at porting Grok from the ELK stack to Prometheus monitoring. The goal is to use Grok patterns for extracting Prometheus metrics from arbitrary log files.
• blackbox_exporter The blackbox exporter allows blackbox probing of endpoints over HTTP, HTTPS, DNS, TCP and ICMP.
• Articles du lead developper

Prometheus differs from Grafana Loki by focusing on metrics instead of logs, and delivering logs via pull, instead of push.