In this sandbox, three Prometheus instances are run as a single Prometheus federation. All three instances scrape metrics from a single Node Exporter.
To start the sandbox:
# In the foreground
make run # docker-compose up --build
# In detached mode
make run-detached # docker-compose up --build --detachThis will start up three Prometheus services (prometheus1, prometheus2, and prometheus3) and a node_exporter service.
| Service | Description |
|---|---|
prometheus1, prometheus2, prometheus3 |
Standard Prometheus instances configured to run as a single federation |
node_exporter |
A Node Exporter instance that gathers and exposes Linux host metrics to be scraped by the Prometheus federation |
To kill the sandbox, run
make kill(alias fordocker-compose kill).
Open up http://localhost:9090/graph to access the Prometheus expression browser. The expression browser is actually available via all three Prometheus instances (ports 9090, 9091, and 9092).