Cannot save connected WIFI information into wpa_supplicant.conf

[DJNoblesse]

• I'm submitting a ...

  • [X] bug report
  • [ ] feature request
  • [ ] support request

• Do you want to request a feature or report a bug? Report a Bug

• What is the current behavior? Cannot save connected WIFI information into wpa_supplicant.conf

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem

1. run docker container on boot

   # Add below command to ~/.config/lxsession/LXDE-pi/autostart
   docker run --rm --privileged --net host \
   -v /path/to/wificfg.json:/cfg/wificfg.json \
   -v /path/to/wpa_supplicant.conf:/etc/wpa_supplicant/wpa_supplicant.conf \
   cjimti/iotwifi

2. Try to connect WIFI network

   $ curl -w "\n" -d '{"ssid":"MYSSID","psk":"mypassword"}' \
   -H "Content-Type: application/json" \
   -X POST localhost:8080/connect

3. check wpa_supplicant.conf (or just reboot and check network status)

   $ sudo docker exec CONTAINER_ID ls -al /etc/wpa_supplicant/

• What is the expected behavior? Save WIFI information into wpa_supplicant.conf and can reconnect to the network after reboot.

• What is the motivation / use case for changing the behavior? N/A

• Please tell us about your environment:

  • Device: Raspberry Pi 3 Model B+
  • OS: Raspbian Stretch 9.4 (NO NOOBS)

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, gitter, etc)

Here is my result of step 3.

[cjimti]

It does not write the wpa_supplicant.conf, it stores the network in the wpa_supplicant network interface. Network configurations should survive a reboot. This is technically not a bug and the intended design.