Tutorial [Short Info] Pihole on unsupported OS

[guidol]

It seems that the actual install routine of Pihole doenst detect buster with kernel 5.8 correctly.

At "my" normal install command "curl -sSL https://install.pi-hole.net | bash" I did get

  [✗] Unsupported OS detected: Armbian 20.08.0-trunk Buster
      https://docs.pi-hole.net/main/prerequesites/#supported-operating-systems

      e.g: If you are seeing this message on a fresh install, you can run:
             'curl -sSL https://install.pi-hole.net | PIHOLE_SKIP_OS_CHECK=true sudo -E bash'

           If you are seeing this message after having run pihole -up:
             'PIHOLE_SKIP_OS_CHECK=true sudo -E pihole -r'
           (In this case, your previous run of pihole -up will have already updated the local repository)

but after giving (as written above) the install command with the option "to not check the OS"

curl -sSL https://install.pi-hole.net | PIHOLE_SKIP_OS_CHECK=true sudo -E bash

the installation went fine  

[guidol]

As Hirsute Hippo is at this time also a unsupported OS - there is another catch to get the lighthttpd of pihole working with the Hippo  

 

While using the PIHOLE_SKIP_OS_CHECK=true the install-routine cant restart the lighthttpd correctly, because the package 
lighttpd-mod-deflate

is missing
 

When the install routine does try to restart the lighthttpd it fails with:
 

journalctl -u lighttpd

configfile.c.461) Warning: "mod_compress" is DEPRECATED and has been replaced with "mod_deflate".
A future release of lighttpd 1.4.x will not contain mod_compresss and lighttpd may fail to start up

plugin.c.195) dlopen() failed for: /usr/lib/lighttpd/mod_deflate.so /usr/lib/lighttpd/mod_deflate.so: 
cannot open shared object file: No such file or directory

server.c.1238) loading plugins finally failed

 

The Hippo has no mod_compress in the lighthttpd  but its searching for the replacement mod_deflate

 

mod_deflate can be installed via 

apt install lighttpd-mod-deflate

 

While there were also other requirements missing on new installs of pihole I did use the following install-command:
 

apt install php-cgi php-common php php-sqlite3 dhcpcd5 lighttpd-mod-deflate -y && curl -sSL https://install.pi-hole.net | PIHOLE_SKIP_OS_CHECK=true sudo -E bash

 

As a "goodie" you can edit after the installation od pihole the /etc/lighttpd/lighttpd.conf and do the follwoing replacement:

change line

 "mod_compress",

against

 "mod_deflate",
 

then save/exit and restart lighthttpd with 

/etc/init.d/lighttpd restart

 

This way I got pihole running under Hirsute Hippo  

 

[Helmut]

I installed Pihole on Buster with kernel 5.10 (on Odroid N2) a while ago. I don't think I encountered issues with the installation command.

 

It is also an option to use Pihole with an installed apache web server. This has been working fine for me.

 

[guidol]

21 minutes ago, Helmut said:

I installed Pihole on Buster with kernel 5.10 (on Odroid N2) a while ago. I don't think I encountered issues with the installation command.

 

I had also some installations in the past with buster and no install problems...but with every new OS version there could be a problem.
We also woud see how it would work with bullseye (after buster)

[guidol]

23 hours ago, guidol said:

We also woud see how it would work with bullseye (after buster)

bullseye with kernel 5.13.10 also did need the packet lighttpd-mod-deflate for installing/running lighthttpd like the Hirsute Hippo

Got it running here on my BPI-M1 with bullseye and kernel 5.13.10:

Linux bpi-m1-120 5.13.10-sunxi #trunk.118 SMP Thu Aug 12 18:20:37 UTC 2021 armv7l GNU/Linux

root@bpi-m1-120(192.168.6.120):~# dpkg -l|grep deflate
ii  lighttpd-mod-deflate  1.4.59-1  armhf  HTTP response compression module for lighttpd