Add influxdb server for metrics

ansible/roles/forrest/files/docker-compose-influxdb.yml

@@ -0,0 +1,24 @@
+version: "2.3"
+
+services:
+  influxdb:
+    image: influxdb:1.8-alpine
+    restart: unless-stopped
+    volumes:
+      - /mnt/tank/dbs/influx/forrest:/var/lib/influxdb
+    environment:
+      - INFLUXDB_HTTP_AUTH_ENABLED=true
+    ports:
+      - 8086:8086
+
+  chronograf:
+    image: chronograf:1.8-alpine
+    restart: unless-stopped
+    environment:
+      - INFLUXDB_URL=http://influxdb:8086
+      - INFLUXDB_USERNAME=influxadmin
+      - INFLUXDB_PASSWORD={{ influxdb_admin_password }}
+    volumes:
+      - ./chronograf:/var/lib/chronograf
+    ports:
+      - 8888:8888