# Grafana Tempo, distributed mode on S3 object storage (MinIO).
# Mounted read-only by the root docker-compose.yml.
# Development defaults: no auth, no TLS, replication factor 1.
#
# One config, five containers - each sets its own `-target=`, so the components
# scale independently and find each other over memberlist. Blocks live in the
# object store, so no container owns the trace data; only the ingester WAL is
# node-local, and it drains to S3 on flush.
#
#   collector -> tempo-distributor:4317 -> ingester -> S3
#   Grafana   -> tempo-query-frontend:3200 -> querier -> S3

server:
  http_listen_port: 3200
  # Inter-component gRPC. Must differ from the OTLP ports below, or startup
  # fails with a duplicate-listener error.
  grpc_listen_port: 9095

memberlist:
  abort_if_cluster_join_fails: false
  bind_port: 7946
  join_members:
    - tempo-distributor:7946
    - tempo-ingester:7946
    - tempo-querier:7946
    - tempo-query-frontend:7946
    - tempo-compactor:7946

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

ingester:
  lifecycler:
    ring:
      replication_factor: 1
  # Small blocks keep a trace queryable seconds after the request. Production
  # wants larger ones.
  max_block_duration: 5m
  complete_block_timeout: 1m

querier:
  frontend_worker:
    frontend_address: tempo-query-frontend:9095

compactor:
  compaction:
    block_retention: ${TEMPO_BLOCK_RETENTION}

storage:
  trace:
    backend: s3
    s3:
      endpoint: minio:9000
      bucket: ${TEMPO_S3_BUCKET}
      access_key: ${TEMPO_S3_ACCESS_KEY}
      secret_key: ${TEMPO_S3_SECRET_KEY}
      # MinIO serves path-style addressing; virtual-host style needs per-bucket DNS.
      insecure: true
      forcepathstyle: true
    wal:
      path: /var/tempo/wal
    pool:
      max_workers: 100
      queue_depth: 10000

# The collector owns metrics; generating span metrics here too would double-count.
overrides:
  defaults:
    metrics_generator:
      processors: []