loki/docs/sources/configuration/examples/2-S3-Cluster-Example.yaml

# This is a complete configuration to deploy Loki backed by a s3-Comaptible API
# like MinIO for storage. Loki components will use memberlist ring to shard and
# the index will be shipped to storage via boltdb-shipper.

auth_enabled: false

server:
  http_listen_port: 3100

common:
  ring:
    instance_addr: 127.0.0.1
    kvstore:
      store: memberlist
  replication_factor: 1
  path_prefix: /loki # Update this accordingly, data will be stored here.

memberlist:
  join_members:
  # You can use a headless k8s service for all distributor, ingester and querier components.
  - loki-gossip-ring.loki.svc.cluster.local:7946 # :7946 is the default memberlist port.

schema_config:
  configs:
  - from: 2020-05-15
    store: boltdb-shipper
    object_store: s3
    schema: v11
    index:
      prefix: index_
      period: 24h

storage_config:
 boltdb_shipper:
   active_index_directory: /loki/index
   cache_location: /loki/index_cache
   shared_store: s3
 aws:
   s3: s3://access_key:secret_access_key@custom_endpoint/bucket_name
   s3forcepathstyle: true

compactor:
  working_directory: /loki/compactor
  shared_store: s3
  compaction_interval: 5m