Pi-hole Password Doesn't Work

Help Synology
1

I am running Pi-hole in Synology Docker container. It appears up and running, but I cannot log onto the web UI. I do have a password set in the YAML config:

  pihole:
    image: pihole/pihole:latest
    container_name: pihole-host
    cap_add:
      - CAP_NET_RAW
      - CAP_NET_BIND_SERVICE
      - CAP_CHOWN
      - CAP_SYS_NICE
      - CAP_SYS_TIME
    environment:
      - PIHOLE_UID=1027
      - PIHOLE_GID=100
      - TZ=US/Pacific
      - FTLCONF_webserver_api_password=notmyrealpassword
      - FTLCONF_webserver_port=8000
      - DNSMASQ_USER=pihole
    volumes:
      - /volume1/docker/pihole/dnsmasq.d:/etc/dnsmasq.d
      - /volume1/docker/pihole:/etc/pihole
    network_mode: host
    labels:
      - com.centurylinklabs.watchtower.enable=false
    restart: unless-stopped

I wanted to try the sudo pihole setpassword option - but here it comes: I don't know how to ssh into the container

I thought the api_password setting in the config would override, no?

2

Are you using "special" characters ($, #, \, spaces, etc.) in your password?

Try using single quotes around the password:
- FTLCONF_webserver_api_password='notmyrealpassword'

You don't ssh directly into the container.

You access the host machine and then you use docker exec to access the container:

docker exec -it <container_name> pihole setpassword

NOTE: This won't work if you already set the password via environment variable. Pi-hole container makes all options set by env vars as read only.

3

Thanks for the quick response. I did not have the pw in single quotes - tried that, no luck.

I then tried running the setpassword command and got this error:
[✗] webserver.api.password set by environment variable. Please unset it to use this function

I then commented out the FTLCONF_webserver_api_password line - no luck.

I was then able to run the setpassword command - tried blank and tried a manual password - neither one worked.

This is so weird - it worked a week ago, but then after shutting docker down and back up it doesn't work.

Should the URL be http://192.168.1.101:8000/admin/login - based on my config above?

4

Hmmm... I missed that.

I remember I saw many recent issues with password and Synology.

You can take a look here:

Maybe it is related to your issue.

5

@MortalGeek - What model of Synology are you using?

Are you able to share the docker startup logs?

6

I am in the same boat too.
running pi-hole on truenas scale. recently updated to version 6.0.

login with password is not working, i tried setting up password again through shell

login only works when i set blank password and any changes to the pihole settings in the UI would require me to run the command again to set blank password.

/ # pihole -v
Core version is v6.0.4 (Latest: v6.0.4)
Web version is v6.0.1 (Latest: v6.0.1)
FTL version is v6.0.2 (Latest: v6.0.2)

pihole setpassword

Thanks
Jag

7

DS1520+ running DSM 7.2.2u3

8

I found a workaround for this. I CAN set the password with FTLCONF_webserver_api_password. And I can log on - BUT only after i clear all my cookies - not just the pi-hole cookies - not sure exactly which one does it, but after clear all i can log on one time. after that, if i close browser and open again - back to enter password loop.

9

OK, thanks - a quick look at the web suggests that you're not on a model affected by the issue we've been seeing.

The FTLCONF_webserver_api_password=notmyrealpassword variable should be enough here - and it shouldn't be changing at all.

Can you provide two things please?

  • A debug token (docker exec -it <container_name> pihole -d - choose yes to upload it and share the token here)
  • The log output when you start your container. (docker logs -f <container_name> should do it)

Edit: Side-note, you've no idea how happy it makes me to see this: