About

Simple playground to try together combination of awesome tools: Grafana 6 + Loki + Prometheus.

Start & Stop

# Start
git clone https://github.com/shadinua/demo-grafana-loki-prometheus
cd demo-grafana-loki-prometheus
docker-compose up

# Stop
^C
docker-compose down

Components

This playground contains:

• loki - storage for logs
• promtail that scrapes logs from your /var/log directory and puts to loki
• cadvisor - exports metrics of running docker containers
• prometheus - storage for metrics, get metrics from cadvisor, interface: http://localhost:9090
• grafana with pre-configured both datasources — loki and prometheus, interface: http://localhost:3000, admin/test

What to play?

• new explore panel: fast search for data, debug, easily play without creating complex dashboards
• split screen: nice mode, where you can simultaneously see, for example, prometheus metrics at the left panel and loki logs on the right
• queries to prometheus:
  • irate(container_cpu_system_seconds_total[20s])
  • container_memory_rss
  • ...
• queries to loki
  • {job="varlogs"}
  • {__filename__="/var/log/syslog"}
  • ...
• create dashboards
• ... many many more ...