AWS Monitoring & Observability — Comprehensive Reference

CloudWatch Metrics

# Get metric statistics
aws cloudwatch get-metric-statistics \
  --namespace AWS/EC2 \
  --metric-name CPUUtilization \
  --dimensions Name=InstanceId,Value=i-0abc123 \
  --start-time $(date -u -d '1 hour ago' +%Y-%m-%dT%H:%M:%SZ) \
  --end-time $(date -u +%Y-%m-%dT%H:%M:%SZ) \
  --period 300 \
  --statistics Average Maximum \
  --query 'Datapoints | sort_by(@, &Timestamp)[].[Timestamp,Average,Maximum]' \
  --output table