writing influxdb data to usb drive

Author: janvda

docker-compose.yml

@@ -11,7 +11,7 @@ services:
       # Mount for influxdb data directory
       - 'influx-data:/var/lib/influxdb'
       # Mount for influxdb configuration
-      - 'influx-config:/etc/influxdb/'
+      # 'influx-config:/etc/influxdb/'
     ports:
       # The API for InfluxDB is served on port 8086
       - "8086:8086"

influxdb/Dockerfile

@@ -4,4 +4,6 @@ RUN echo "LABEL=influxdb /mnt/usbdrive ext4 rw,relatime,discard,data=ordered 0 2
 
 # The script "my_entrypoint.sh" is an extension of the existing script with extra instructions to mount the usb memory stick.
 COPY my_entrypoint.sh /entrypoint.sh
-RUN chmod +x /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+COPY influxdb.conf /etc/influxdb

influxdb/influxdb.conf

@@ -0,0 +1,7 @@
+[meta]
+  dir = "/mnt/usbdrive/influxdb/meta"
+
+[data]
+  dir = "/mnt/usbdrive/influxdb/data"
+  engine = "tsm1"
+  wal-dir = "/mnt/usbdrive/influxdb/wal"

influxdb/my_entrypoint.sh

@@ -1,8 +1,10 @@
 #!/bin/bash
-# JVA 2018-11-15 I have added following instructions to mount usbdrive
+# JVA 2018-11-15 I have added following instructions to mount usbdrive and create subfolder influxdb
 mkdir -p /mnt/usbdrive
 mount /mnt/usbdrive
 
+mkdir -p /mnt/usbdrive/influxdb
+
 # here below copy paste of original entrypoint.sh. see : 
 #  https://github.com/influxdata/influxdata-docker/tree/35d89882b57f333d9518b4556e7b872ce970e620/influxdb/1.7
 set -e