📦 NEW: Add Loki service and configuration to Docker Compose setup

config/loki-config.yaml

@@ -0,0 +1,30 @@
+---
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+
+common:
+  instance_addr: 127.0.0.1
+  path_prefix: /loki
+  storage:
+    filesystem:
+      chunks_directory: /loki/chunks
+      rules_directory: /loki/rules
+  replication_factor: 1
+  ring:
+    kvstore:
+      store: inmemory
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: tsdb
+      object_store: filesystem
+      schema: v13
+      index:
+        prefix: index_
+        period: 24h
+
+ruler:
+  alertmanager_url: http://localhost:9093

docker-compose.yml

@@ -4,6 +4,8 @@ volumes:
     driver: local
   prometheus-data:
     driver: local
+  data_loki:
+    driver: local
 networks:
   grafana-prometheus:
     external: true
@@ -58,6 +60,26 @@ services:
     restart: unless-stopped
     networks:
       - grafana-prometheus
+  loki:
+    container_name: loki
+    image: docker.io/grafana/loki:3.5.0
+    command: "-config.file=/etc/loki/config.yaml" # Tells Grafana Loki to start with the config file.
+    ports:
+      # --> (Optional) Remove when using traefik...
+      - "3100:3100"
+      # <--
+    volumes:
+      - ./config/loki-config.yaml:/etc/loki/config.yaml:ro
+      - data_loki:/loki:rw
+    networks:
+      - grafana-prometheus
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "http://localhost:3100/ready"]
+      interval: 10s     # check every 10 seconds
+      timeout: 5s       # wait max 5 seconds per check
+      retries: 5        # mark as unhealthy after 5 failures
+      start_period: 20s # wait 20s after container starts before first check
   https_portal:
     container_name: https_portal
     image: "steveltn/https-portal:1.21"
@@ -81,4 +103,5 @@ services:
       - ./https_portal/log:/var/log/nginx # nginx logs
     depends_on:
       - prometheus
-      - grafana
+      - grafana
+      - loki