Prometheus
Exporters
Provides metrics on the /metrics http endpoint. We use exporters for Redis, Postgres, Rails…
Prometheus
Prometheus is the brains of the system providing the following functions:
- Scrap metrics from the exporters
- Store metrics in a database
- Manage threshold based alerts
- Provides a web interface to query the data, return metrics and graph them
Influxdb
Is a time series database to store metrics reliably and query them.
Alertmanager
Receives alerts from prometheus and notifies users on various channels.
Grafana
Reads the metrics from various datasources including influxdb to create advanced graphs and dashboards.