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Lab 05 — Dashboard Creation

Objective​

Build a four golden signals service dashboard with PromQL and LogQL panels.

Prerequisites​

  • Lab 04 completed (all datasources verified)
  • Grafana accessible at https://<slug>.g.xscalerlabs.com

Steps​

Step 1 — Create a New Dashboard​

  1. In Grafana: Dashboards → New → New Dashboard
  2. Click Add panel

Step 2 — Add Request Rate Panel​

  • Datasource: xMetrics
  • Query:
sum by (job) (rate(up[$__rate_interval]))
  • Visualization: Time series
  • Title: Request Rate
  • Unit: requests/sec

Step 3 — Add Error Rate Panel​

  • Query:
sum(rate(cortex_request_duration_seconds_count{status_code=~"5.."}[$__rate_interval]))
/ sum(rate(cortex_request_duration_seconds_count[$__rate_interval])) * 100
  • Visualization: Time series
  • Title: Error Rate
  • Unit: percent (0-100)
  • Threshold: yellow at 0.5, red at 1.0

Step 4 — Add Latency Panel​

  • Query:
histogram_quantile(0.99, sum by (le) (
  rate(cortex_request_duration_seconds_bucket[$__rate_interval])
))
  • Visualization: Time series
  • Title: p99 Latency
  • Unit: seconds

Step 5 — Add Log Volume Panel​

  • Datasource: xLogs
  • Query:
sum by (level) (count_over_time({service=~".+"}[$__interval]))
  • Visualization: Time series
  • Title: Log Volume by Level

Step 6 — Save the Dashboard​

  • Click Save → Name: Lab05: Golden Signals

[Screenshot: Completed Lab05 dashboard showing four panels: request rate, error rate, p99 latency, and log volume]

Validation​

  • Dashboard saved as Lab05: Golden Signals
  • All four panels display data
  • Error rate panel has thresholds (yellow/red)
  • Log volume panel shows level breakdown

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Next: Lab 06 — Alerting →