Can't connect to web admin panel after last update

Hi,

I'm using pihole installed in an proxmox lxc container. everything worked fine so far until the last update. went from:
Core 6.0.6 -> 6.1
Web 6.1 -> 6.2.1
FTL 6.1 -> 6.2

Expected Behaviour:

functionality works
Web should open

Actual Behaviour:

functionally, still works
Can't connect to the web admin panel

Debug Token:

https://tricorder.pi-hole.net/ne5nO0sq/

Thank you for the help

Looks like FTL has crashed:

   -----tail of FTL.log------
   2025-05-31 20:19:38.427 EEST [456M] INFO: FTL user: started as pihole, ended as pihole
   2025-05-31 20:19:38.427 EEST [456M] INFO: Compiled for linux/amd64 (compiled on CI) using cc (Alpine 14.2.0) 14.2.0
   2025-05-31 20:19:38.427 EEST [456M] INFO: Process details: MID: 456
   2025-05-31 20:19:38.427 EEST [456M] INFO:                  PID: 456
   2025-05-31 20:19:38.427 EEST [456M] INFO:                  TID: 456
   2025-05-31 20:19:38.427 EEST [456M] INFO:                  Name: pihole-FTL
   2025-05-31 20:19:38.427 EEST [456M] INFO: Received signal: Segmentation fault
   2025-05-31 20:19:38.427 EEST [456M] INFO:      at address: 0x7f7a979a61fb
   2025-05-31 20:19:38.427 EEST [456M] INFO:      with code:  SEGV_MAPERR (Address not mapped to object)
   2025-05-31 20:19:38.427 EEST [456M] INFO: !!! INFO: pihole-FTL has not been compiled with glibc/backtrace support, not generating one !!!
   2025-05-31 20:19:38.427 EEST [456M] INFO: ------ Listing content of directory /dev/shm ------
   2025-05-31 20:19:38.427 EEST [456M] INFO: File Mode User:Group      Size  Filename
   2025-05-31 20:19:38.427 EEST [456M] INFO: rwxrwxrwx root:root       360   .
   2025-05-31 20:19:38.428 EEST [456M] INFO: rwxr-xr-x root:root       480   ..
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole   786K  FTL-456-recycler
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole     4K  FTL-456-dns-cache-lookup
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole    20K  FTL-456-domains-lookup
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole     4K  FTL-456-clients-lookup
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole   569K  FTL-456-fifo-log
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole     4K  FTL-456-per-client-regex
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole    20K  FTL-456-dns-cache
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole     8K  FTL-456-overTime
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole     4M  FTL-456-queries
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole    29K  FTL-456-upstreams
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole   348K  FTL-456-clients
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole    70K  FTL-456-domains
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole   123K  FTL-456-strings
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole   144   FTL-456-settings
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole   328   FTL-456-counters
   2025-05-31 20:19:38.428 EEST [456M] INFO: rw------- pihole:pihole    88   FTL-456-lock
   2025-05-31 20:19:38.428 EEST [456M] INFO: ---------------------------------------------------
   2025-05-31 20:19:38.428 EEST [456M] INFO: Please also include some lines from above the !!!!!!!!! header.
   2025-05-31 20:19:38.428 EEST [456M] INFO: Thank you for helping us to improve our FTL engine!
   2025-05-31 20:19:38.428 EEST [456M] INFO: PID file emptied

We are investigating similar reports.

Had the same issue today. My pihole installation runs on Debian 12 (baremetal) and has a changed port (8080) in /etc/pihole/pihole.toml (also runs OMV on port 80). Worked just fine until today thow. I also verified that the port was still set to 8080 in pihole.toml, that was not the issue.

Long story short: I uninstalled pihole, rebooted the server and reinstalled pihole. After that, I changed the pihole webserver back to port 8080, rebooted the machine and pihole was back up and running, the web interface was accessible again with http://server-ip:8080/admin/ - was much faster than check dozends of forum posts, all in all may be 10 minutes or so. The server is a Ryzen 3 2200G based machine, so not that slow.

Of course I needed to reimport the Teleporter backup.

Ah almost forgot to mention, that the DNS resolution was not working while pihole was faulty. I had to set the DNS server back to the router temporarily.

Same problem here.

I've repeatedly tried installing Pi-Hole v6.1 on a Raspberry Pi 3B+ running a fresh installation of OS Bookworm with no luck. The Pi-Hole install seems to complete without obvious errors, but FTL fails to run and I can’t bring up the web console.

Previously I had Pi-Hole v6.0.6 running fine on the same Pi, but with RPi OS Bullseye.

I'm looking forward to a fix.

This is basically where I am at. In addition, the web monitor on my computer shows TWO data streams. My mental capacities are failing (I am over 80) and I am having difficulty putting together a description as a starting point.

Hi,
and me too...
After updating to the last version, no access to the admin page is possible. Id would be nice if anyone could tell me what to do now.
Thanks!
https://tricorder.pi-hole.net/YNIhXbyJ

I had the same problem after upgrading to FTL 6.2.1.. Resetting FTL using the following worked for me

sudo service pihole-FTL stop
sudo mv /etc/pihole/pihole-FTL.db /etc/pihole/pihole-FTL-old.db
sudo service pihole-FTL start

2 Likes

Thanks a lot, it's working again. This was the solution.

Thanks, will try that if I have the same issue in the future. However reinstalling did the trick, too - but that's expected since it removed the database, too :slight_smile:

Today there was an update and guess what: exactly the same issue! But stopping FTL, deleting the database and starting the service fixed it. All settings where still there. I think I add the database deletion to my update shell script (updates debian + OpenMediaVault and pihole) as a precautional maintenance.

service pihole-FTL stop
rm -f /etc/pihole/pihole-FTL.db
service pihole-FTL start

Today's update:

Core v6.1.1
FTL v6.2.1
Web interface v6.2.1