Prometheus setup with docker-compose.

Full monitoring stack — part 1.

Please read the updated version here:

Prometheus Monitoring Stack — Efficient and Complete Set-Up with Docker-Compose

In short: What is Prometheus?

Prometheus is an open-source monitoring application. It scrapes HTTP endpoints to collect metrics exposed in a simple text format.

For example, your web app might expose a metric like

http_server_requests_seconds_count{exception="None", method="GET",outcome="SUCCESS",status="200",uri="/actuator/health"} 435

which means that the endpoint /actuator/health was successfully queried 435 times via a GET request.

Prometheus can also create alerts if a metric exceeds a threshold, e.g. if your endpoint returned more than one-hundred times the status code 500 in the last 5 minutes.

Configuration

To set up Prometheus, we create three files:

• prometheus/prometheus.yml — the actual Prometheus configuration
• prometheus/alert.yml —…