unexisting mount device

Author: janvda

docker-compose.yml

@@ -9,6 +9,8 @@ services:
     # privileged added so usb drive can be mounted.
     privileged: true
     volumes:
+        # take care that the mount location "/mnt/influxdb" becomes overwritten
+        # by the mount location specified in the influxdb Dockerfile.
         - 'influxdb-data:/mnt/influxdb'   
     ports:
       # The API for InfluxDB is served on port 8086

influxdb/Dockerfile

@@ -1,7 +1,11 @@
 FROM arm32v7/influxdb:latest
 
 # The following instruction defines the mount location where the influxdb data should be stored.
-RUN echo "LABEL=influxdb /mnt/influxdb ext4 rw,relatime,discard,data=ordered 0 2"  >> /etc/fstab
+# In this case it is referring to an USB memory stick with label "influxdb" that is formatted in "ext4" format.
+# If there is no such USB drive connected to the device then the named volume specified in the
+# docker compose will be used.
+#
+RUN echo "LABEL=influxdb2 /mnt/influxdb ext4 rw,relatime,discard,data=ordered 0 2"  >> /etc/fstab
 
 # 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