Observability with Prometheus & Grafana: Metrics That Matter

June 13, 2024 Hari Prasad Monitoring (0) Observability (0) #prometheus (0) #grafana (0) #monitoring (0) #observability (0) #devops (0)

Observability is more than just monitoring. Prometheus and Grafana are the go-to stack for collecting, visualizing, and alerting on metrics.

Why Prometheus & Grafana?

Open source: No vendor lock-in.
Powerful queries: PromQL for custom metrics.
Beautiful dashboards: Grafana for visualization.

Example: Prometheus Alert Rule

groups:
- name: example
  rules:
  - alert: HighCPUUsage
    expr: avg(rate(container_cpu_usage_seconds_total[5m])) by (pod) > 0.8
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "High CPU usage detected"

Best Practices

Use labels for metric granularity.
Set up alerting for actionable events.
Use Grafana folders for dashboard organization.
Integrate with Slack, PagerDuty, or email for alerts.

Useful Dashboards

Kubernetes cluster overview
Node and pod resource usage
Application latency and error rates

Tags: prometheus, grafana, monitoring, observability, devops

Categories: Monitoring, Observability