Questions on Loki and GCS retention period

[rayanebel]

Hi everyone,

We have a kubernetes cluster on GKE, we have deploy Grafana Loki + Promtail to collect all the logs of our containers. We have also configured grafana loki to store the logs (chunks) into a GCS bucket.

Now my question is about the retention period. If I did not make a mistake, with the configuration below we have configured a retention period of 24h

auth_enabled: false
chunk_store_config:
  max_look_back_period: 0s
compactor:
  shared_store: filesystem
  working_directory: /data/loki/boltdb-shipper-compactor
ingester:
  chunk_block_size: 262144
  chunk_idle_period: 3m
  chunk_retain_period: 1m
  lifecycler:
    ring:
      kvstore:
        store: inmemory
      replication_factor: 1
  max_transfer_retries: 0
limits_config:
  enforce_metric_name: false
  reject_old_samples: true
  reject_old_samples_max_age: 168h
schema_config:
  configs:
    - from: 2020-07-01
      store: boltdb-shipper
      object_store: gcs
      schema: v11
      index:
        prefix: index_
        period: 24h
server:
  http_listen_port: 3100
storage_config:
  boltdb_shipper:
    active_index_directory: /data/loki/boltdb-shipper-active
    cache_location: /data/loki/boltdb-shipper-cache
    cache_ttl: 24h
    shared_store: gcs
  gcs:
    bucket_name: k8s-monitoring-loki
table_manager:
  retention_deletes_enabled: true
  retention_period: 24h

But when I check now the content of my GCS bucket nothing is delete. Is this normal?

Thanks you for your help.