feat: add loki

.gitignore

@@ -0,0 +1,2 @@
+loki-data
+loki-wal

compose.yml

@@ -116,6 +116,30 @@ services:
     networks:
       - teacinema
 
+  loki:
+    container_name: loki
+    image: grafana/loki:2.9.1
+    volumes:
+      - ./loki-config.yml:/etc/loki/config.yaml
+      - ./loki-data:/loki
+      - ./loki-wal:/wal
+    command:
+      - -config.file=/etc/loki/config.yaml
+    ports:
+      - "3100:3100"
+    networks:
+      - teacinema
+
+  promatail:
+    container_name: promtail
+    image: grafana/promtail:2.9.1
+    volumes:
+      - ./promtail-config.yml:/etc/promtail/config.yml
+      - ../logs:/var/log/services
+    command: -config.file=/etc/promtail/config.yml
+    networks:
+      - teacinema
+
 volumes:
   postgres_data:
   redis_data:

loki-config.yml

@@ -0,0 +1,41 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+
+ingester:
+  lifecycler:
+    address: 127.0.0.1
+    ring:
+      kvstore:
+        store: inmemory
+      replication_factor: 1
+  chunk_idle_period: 5m
+  max_chunk_age: 1h
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: tsdb
+      object_store: filesystem
+      schema: v12
+      index:
+        prefix: index_
+        period: 24h
+
+storage_config:
+  tsdb_shipper:
+    active_index_directory: /loki/index
+    cache_location: /loki/cache
+    shared_store: filesystem
+  filesystem:
+    directory: /loki/chunks
+
+limits_config:
+  ingestion_rate_mb: 10
+  ingestion_burst_size_mb: 20
+  max_cache_freshness_per_query: 10m
+
+compactor:
+  working_directory: /loki/compactor
+  shared_store: filesystem

promtail-config.yml

@@ -0,0 +1,18 @@
+server:
+    http_listen_port: 9080
+    grpc_listen_port: 0
+
+positions:
+    filename: /tmp/positions.yaml
+
+clients:
+    - url: http://loki:3100/loki/api/v1/push
+
+scrape_configs:
+    - job_name: auth-logs
+      static_configs:
+      - targets: [localhost]
+        labels:
+          job: auth
+          service: auth-service
+          __path__: /var/log/services/auth/*.log