# Tempo Helm Values
# Chart: https://github.com/grafana/helm-charts/tree/main/charts/tempo
#
# Architecture:
# - Single binary (monolithic) mode for small clusters
# - Local filesystem (emptyDir) for trace storage
# - OTLP receiver for OpenTelemetry data
# - Integrates with Grafana for trace visualization

# Medium priority for observability
priorityClassName: medium-priority

# Single replica
replicas: 1

# =============================================================================
# Tempo Configuration
# =============================================================================
tempo:
  # Resource settings (no CPU limit for stability)
  resources:
    requests:
      cpu: 15m
      memory: 100Mi
    limits:
      memory: 109Mi
  # Receivers - protocols Tempo accepts
  receivers:
    otlp:
      protocols:
        grpc:
          endpoint: 0.0.0.0:4317
        http:
          endpoint: 0.0.0.0:4318

  # Retention settings
  retention: 24h  # Keep traces for 1 day (reduced for local storage)

  # Backend storage (local filesystem)
  storage:
    trace:
      backend: local
      local:
        path: /var/tempo/traces
      wal:
        path: /var/tempo/wal

  # Query settings
  querier:
    frontend_worker:
      frontend_address: ""

  # Metrics generator for trace-derived metrics
  metricsGenerator:
    enabled: true
    remoteWriteUrl: http://prometheus-kube-prometheus-prometheus.prometheus.svc:9090/api/v1/write

  # Additional volume mounts
  extraVolumeMounts:
    - name: tempo-data
      mountPath: /var/tempo

# =============================================================================
# Persistence - Disabled (use emptyDir)
# =============================================================================
persistence:
  enabled: false

# emptyDir volume for all data
extraVolumes:
  - name: tempo-data
    emptyDir:
      sizeLimit: 5Gi

# =============================================================================
# Service
# =============================================================================
service:
  type: ClusterIP

# =============================================================================
# ServiceMonitor for Prometheus
# =============================================================================
serviceMonitor:
  enabled: true
  additionalLabels:
    release: prometheus