server:
  http_listen_port: 3200

distributor:
  receivers:
    otlp:
      protocols:
        grpc:
          endpoint: 0.0.0.0:4317
        http:
          endpoint: 0.0.0.0:4318

ingester:
  max_block_duration: 5m

compactor:
  compaction:
    block_retention: 336h

storage:
  trace:
    backend: local
    wal:
      path: /var/tempo/wal
    local:
      path: /var/tempo/blocks

metrics_generator:
  registry:
    external_labels:
      source: tempo
  storage:
    path: /var/tempo/generator/wal
    remote_write:
      - url: http://prometheus:9090/api/v1/write
        send_exemplars: true
  # Not in the Ansible template, which is broken without it: the
  # local-blocks processor needs a traces WAL, and when it can't initialise,
  # Tempo 2.8 starts *no* processors for the tenant ("local blocks processor
  # requires traces wal"), so service-graphs and span-metrics never emit.
  traces_storage:
    path: /var/tempo/generator/traces

overrides:
  defaults:
    metrics_generator:
      processors: [service-graphs, span-metrics, local-blocks]
      # Not in the Ansible template. Without it the generator labels exemplars
      # traceID (the code default; the docs wrongly say trace_id), which the
      # Prometheus datasource's exemplarTraceIdDestinations (trace_id) never
      # matches, so exemplars render but don't link to Tempo.
      trace_id_label_name: trace_id