add loki + promtail

docker/grafana/docker-compose.yml

@@ -22,6 +22,25 @@ services:
     volumes:
       - /docker/appdata/grafana:/etc/grafana/provisioning/datasources
 
+  loki:
+    image: grafana/loki:2.4.0
+    container_name: loki
+    volumes:
+      - /docker/appdata/loki:/etc/loki
+    ports:
+      - "3100:3100"
+    restart: unless-stopped
+    command: -config.file=/etc/loki/loki-config.yml
+
+  promtail:
+    image: grafana/promtail:2.4.0
+    container_name: promtail
+    volumes:
+      - /var/log:/var/log
+      - /docker/appdata/promtail:/etc/promtail
+    restart: unless-stopped
+    command: -config.file=/etc/promtail/promtail-config.yml
+
   snmp-exporter:
     image: prom/snmp-exporter:v0.26.0
     volumes: