glibc 2.28 requirement breaks compatibility with Ubuntu 18.04 LTS

[amadeuspzs]

Versions

• Pi-hole: 5.12
• AdminLTE: 5.14.1
• FTL: 5.17

Platform

• OS and version: Ubuntu 18.04.6 LTS (GNU/Linux 4.15.0-122-generic x86_64)

• Platform: Intel NUC

Expected behavior

FTL loads.

Actual behavior / bug

FTL crashes on load:

pihole-FTL: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by pihole-FTL)

Steps to reproduce

Steps to reproduce the behavior:

1. Attempt to start: sudo service pihole-FTL start
2. Check systemctl status pihole-FTL.service:

   Loaded: loaded (/etc/init.d/pihole-FTL; generated)
   Active: failed (Result: exit-code) since Sat 2022-09-03 08:42:31 UTC; 19s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 3601 ExecStart=/etc/init.d/pihole-FTL start (code=exited, status=1/FAILURE)

Sep 03 08:42:31 nuc systemd[1]: Starting LSB: pihole-FTL daemon...
Sep 03 08:42:31 nuc pihole-FTL[3601]: Not running
Sep 03 08:42:31 nuc su[3637]: Successful su for pihole by root
Sep 03 08:42:31 nuc su[3637]: + ??? root:pihole
Sep 03 08:42:31 nuc su[3637]: pam_unix(su:session): session opened for user pihole by (uid=0)
Sep 03 08:42:31 nuc pihole-FTL[3601]: /usr/bin/pihole-FTL: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (r
Sep 03 08:42:31 nuc su[3637]: pam_unix(su:session): session closed for user pihole
Sep 03 08:42:31 nuc systemd[1]: pihole-FTL.service: Control process exited, code=exited status=1
Sep 03 08:42:31 nuc systemd[1]: pihole-FTL.service: Failed with result 'exit-code'.
Sep 03 08:42:31 nuc systemd[1]: Failed to start LSB: pihole-FTL daemon.

Debug Token

• URL: https://tricorder.pi-hole.net/75lSJdql/

Additional context

It looks like the update to glibc 2.28 breaks compatibility with Ubuntu 18.04 LTS (EOL 2028).

ldd --version:

ldd (Ubuntu GLIBC 2.27-3ubuntu1.6) 2.27
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.

I have read that I need to do a full upgrade to fix this, but this may cause breaking changes with other services on this server.

[yubiuser]

Cross link https://discourse.pi-hole.net/t/lib-x86-64-linux-gnu-libc-so-6-version-glibc-2-28-not-found/57506/8

[pralor-bot]

This issue has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/lib-x86-64-linux-gnu-libc-so-6-version-glibc-2-28-not-found/57506/8

[DL6ER]

Please run

pihole checkout ftl v5.16.3

until we have found a permanent solution.

edit Updated the version, sorry for the typo.

[folti]

Please run

pihole checkout ftl 5.16.3

until we have found a permanent solution.

Hi,

at least for me, that command gives the following output:

 # pihole checkout ftl  5.16.3                                                                                                                                           
 Please note that changing branches severely alters your Pi-hole subsystems                                                                                                                   
 Features that work on the master branch, may not on a development branch
 This feature is NOT supported unless a Pi-hole developer explicitly asks!                                                                                                                  
 Have you read and understood this? [y/N] y                                                                                                                                                 
                                                                                                                                                                                             
pihole-FTL: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28' not found (required by pihole-FTL)             

The problem is in the /opt/pihole/piholeCheckOut.sh at line 171: oldbranch="$(pihole-FTL -b)"

If I replace it with: oldbranch="$(pihole-FTL -b || echo master)"

the response will change to this:

 pihole checkout ftl 5.16.3       
  Please note that changing branches severely alters your Pi-hole subsystems
  Features that work on the master branch, may not on a development branch
  This feature is NOT supported unless a Pi-hole developer explicitly asks!
  Have you read and understood this? [y/N] y

/opt/pihole/piholeCheckout.sh: line 171: pihole-FTL: command not found
  [✗] Requested branch "5.16.3" is not available
  [i] Available branches for FTL are:
      - adlist_message_table
      - development
      - fix/dhcp_netid_free
      - fix/dnssec-retry
      - fix/mysterious_crash
      - master
      - new/GeoIP
      - new/devcontainers-tweakbuildscript
      - new/dnsmasq_server_hostnames
      - new/god
      - new/http
      - revert-1395-newbuildcontainers
      - special/CI_development
      - surely_not
      - test/e2e
      - tweak/adam-pass-smoke
      - tweak/debug_for_refused
      - tweak/dot_empty_domain_database
      - tweak/gravity
      - tweak/round-robin
      - tweak/sqlite3_optimize
      - tweak/white_regex_id
      - update/dnsmasq

[DL6ER]

@folti Sorry, I edited a missing v into my post above but I have been too slow for you. Could you try again with the v and your modification to the update script?

[folti]

@DL6ER Yes, now it works, thank you.

[pralor-bot]

This issue has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/psa-dropping-support-for-ubuntu-18-04/57523/1

[rar0ch]

I had the same problem, the steps I had to take were:

Temporarily change system's DNS resolver in /etc/resolv.conf from nameserver 127.0.0.1 to nameserver 1.1.1.1

Change line 171 in /opt/pihole/piholeCheckOut.sh from oldbranch="$(pihole-FTL -b)" to oldbranch="$(pihole-FTL -b || echo master)" like @folti described.

Downgrade FTL with the command pihole checkout ftl v5.16.3

Change system's DNS resolver back to nameserver 127.0.0.1

[MrHappy]

Please run

pihole checkout ftl v5.16.3

until we have found a permanent solution.

edit Updated the version, sorry for the typo.

I first did this and later updated my machine to ubuntu 20. After that I ran pihole -up and after it is nagging Warning: You are using FTL from a custom branch (v5.16.3) and might be missing future releases. How do I undo the setting?

--- nvm... found it.. pihole checkout ftl master

[yubiuser]

pihole checkout master

[amadeuspzs]

Can confirm running:

pihole checkout ftl v5.16.3 yields the following error:

pihole-FTL: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by pihole-FTL)

The fix mentioned above by @rar0ch works:

Change line 171 in /opt/pihole/piholeCheckOut.sh from oldbranch="$(pihole-FTL -b)" to oldbranch="$(pihole-FTL -b || echo master)" like @folti described.

and re-running

pihole checkout ftl v5.16.3

works.

I will disable automatic updates as I imagine that will pull back to master/latest update each time?

[yubiuser]

I will disable automatic updates

This is a wise decision, as it is not recommended in any way to auto-update an essential network service without reading the release notes first.

[helmar74]

Same error here, running on raspberry pi. Fallback to ftl v 5.16.3 worked, but webinterface isn't working at the moment....

get the following errors:

2022-09-05 22:55:15: (server.c.1295) WARNING: unknown config-key: alias.url (ignored)
2022-09-05 22:55:26: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:55:28: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:55:28: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:55:34: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:58:16: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:58:19: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:58:19: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:58:24: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:59:37: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:59:43: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:59:43: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:59:49: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:59:53: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:59:55: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 22:59:59: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:02: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:04: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:04: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:09: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:55: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:55: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:58: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:58: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:00:58: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:01:01: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:01:01: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:01:03: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:03:09: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:03:09: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:03:15: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:20:25: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:20:46: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:20:50: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:20:50: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:20:55: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:22:15: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:22:20: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:26:57: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:28:17: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:28:19: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:28:21: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:28:21: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:28:23: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:28:23: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:28:28: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:29:00: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:36:33: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:40:29: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:40:30: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:40:30: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285
2022-09-05 23:40:36: (mod_fastcgi.c.2543) FastCGI-stderr: PHP Parse error:  syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /var/www/html/admin/scripts/pi-hole/php/database.php on line 285

Does anyone know, how to get webinterface working again?

Thanks in advance

[emilioramirez]

Same problem here with the web interface :( . I created an issue on pi-hole/AdminLTE

[rdwebdesign]

NOTE: The PHP issue is probably unrelated to this one and should be discussed in pi-hole/AdminLTE.

[github-actions[bot]]

This issue is stale because it has been open 30 days with no activity. Please comment or update this issue or it will be closed in 5 days.

[hennyhoeven]

The advise doesn't work.

pihole checkout ftl v5.16.3 Please note that changing branches severely alters your Pi-hole subsystems Features that work on the master branch, may not on a development branch This feature is NOT supported unless a Pi-hole developer explicitly asks! Have you read and understood this? [y/N] y

pihole-FTL: /lib/arm-linux-gnueabihf/libc.so.6: version `GLIBC_2.28' not found (required by pihole-FTL)

Which makes sense.. pihole-FTL can't start due to missing GLIB ..

And piholeCheckout.sh tries to run pihole-FTL to get some old-branch version.

oldbranch="$(pihole-FTL -b)" actually needs to run the binary :)

Just comment it out then it works.

oldbranch="$(pihole-FTL -b) || echo master)"

[ZizzyZizzy]

This is now completely broken and extremely difficult to fix with the given work around.

The reason is because the files for all old versions previously hosted at ftl.pi-hole.net are now missing: https://ftl.pi-hole.net/v5.16.3/

I had to hack my way around it by downloading the files from https://github.com/pi-hole/FTL/releases/tag/v5.16.3 into my local web server, setup an SSL VirtualHost to spoof that domain locally, and then modify basic-install.sh so every curl to the hard-coded ftl.pi-hole-net site used the -k option to ignore the invalid certificate.

In hindsight, I should have probably just changed basic-install.sh to look for the requested version in the github releases instead, but I didn't realize that until after I got it working this way.

Don't forget to create /var/log/pihole and chown it to pihole:pihole. For some reason after installing the older version, that folder was gone and pihole-FTP was silently failing because it couldn't write to its log file.

[mrdc]

@ZizzyZizzy I've played with basic-install.sh and ended up with a semi working pi-hole: ftl is 5.16.3, --gravity command stopped working etc. That's quite annoying as I've already spent 2 hours fixing. And there is no official way to install older version in case something goes wrong.

  Current Pi-hole version is v5.17.1
  Current AdminLTE version is v5.20.1
  Current FTL version is v5.16.3

[DL6ER]

As long as your are on x86, you could use the musl binary that is fully-static and completely independent of the installed glibc version. In the currently ongoing v6 development, we are looking at compiling the binaries for all of the major supported architectures batteries-included so glibc incompatibility should not happen again.

[theY4Kman]

I was able to swap out the download site from ftl.pihole.net to github by changing two lines in /etc/.pihole/automated install/basic-install.sh — one line in check_download_exists() to verify the artifact is available, and one in FTLinstall() performing the actual download of the artifact (and its checksum file).

Full patch file

diff --git a/automated install/basic-install.sh b/automated install/basic-install.sh
index 1f3002e..010661c 100755
--- a/automated install/basic-install.sh        
+++ b/automated install/basic-install.sh        
@@ -2090,7 +2090,7 @@ update_dialogs() {
 }
 
 check_download_exists() {
-    status=$(curl --head --silent "https://ftl.pi-hole.net/${1}" | head -n 1)
+    status=$(curl --head --silent "https://github.com/pi-hole/FTL/releases/download/${1}" | head -n 1)
     if grep -q "404" <<< "$status"; then
         return 1
     else
@@ -2230,7 +2230,7 @@ FTLinstall() {
     if [[ "${ftlBranch}" == "master" ]];then
         url="https://github.com/pi-hole/ftl/releases/latest/download"
     else
-        url="https://ftl.pi-hole.net/${ftlBranch}"
+        url="https://github.com/pi-hole/FTL/releases/download/${ftlBranch}"
     fi
 
     if curl -sSL --fail "${url}/${binary}" -o "${binary}"; then

check_download_exists

Around line 2090, change this line

status=$(curl --head --silent "https://ftl.pi-hole.net/${1}" | head -n 1)

To reference github releases:

status=$(curl --head --silent "https://github.com/pi-hole/FTL/releases/download/${1}" | head -n 1)

FTLinstall

Around line 2230, change this line

url="https://ftl.pi-hole.net/${ftlBranch}"

To reference github releases:

url="https://github.com/pi-hole/FTL/releases/download/${ftlBranch}"

---

After making these changes, I was able to run pihole checkout ftl v5.16.3 successfully.

[gtsboys]

Beginner question... How to I edit the piholeCheckout.sh? I prefer to open it in a text editor rather than in terminal.

All things linux are new to me...