# Monitoring Stack evidence sample (Prometheus + Loki + Promtail)

$ docker compose -f monitoring-stack/docker-compose.yml config --quiet
# exit code 0

$ docker run --rm \
  --entrypoint promtool \
  -v "$PWD/monitoring-stack/prometheus:/etc/prometheus:ro" \
  prom/prometheus:v2.54.1 \
  check config /etc/prometheus/prometheus.yml

Checking /etc/prometheus/prometheus.yml
 SUCCESS: /etc/prometheus/prometheus.yml is valid prometheus config file syntax
 SUCCESS: 1 rule files found

$ docker run --rm \
  --entrypoint promtool \
  -v "$PWD/monitoring-stack/prometheus:/etc/prometheus:ro" \
  prom/prometheus:v2.54.1 \
  check rules /etc/prometheus/alert.rules.yml

Checking /etc/prometheus/alert.rules.yml
  SUCCESS: 4 rules found

$ docker run --rm \
  -v "$PWD/monitoring-stack/loki:/etc/loki:ro" \
  grafana/loki:3.2.0 \
  -config.file=/etc/loki/loki-config.yml \
  -verify-config

ts=2026-05-25T... level=info msg="Loaded config file" file=/etc/loki/loki-config.yml
ts=2026-05-25T... level=info msg="Config has been verified successfully."
# exit code 0

$ docker run --rm \
  -v "$PWD/monitoring-stack/promtail:/etc/promtail:ro" \
  grafana/promtail:3.2.0 \
  -config.file=/etc/promtail/promtail-config.yml \
  -check-syntax

ts=2026-05-25T... level=info msg="Loaded config file"
ts=2026-05-25T... level=info msg="Config syntax is valid"
# exit code 0

$ for f in monitoring-stack/grafana/provisioning/dashboards/*.json; do
    echo "Checking $f"
    jq -e . "$f" > /dev/null
  done

Checking monitoring-stack/grafana/provisioning/dashboards/node-overview.json
Checking monitoring-stack/grafana/provisioning/dashboards/logs-overview.json
# exit code 0