LibreELEC + docker-pi-hole

[Anuskuss]

I'm fairly new to docker and pi-hole and didn't even know that this project had a github repo, so I can finally share my problems I've encounterd in the hope to receive some support.

Current Configuration

• Intel NUC7i5BNK
• LibreELEC 8.2
• Kodi Docker addon 17.10.0 (based of docker-ce)
• diginc/pi-hole:latest

Config

docker run -d \
	--name pihole \
	-p 53:53/tcp \
	-p 53:53/udp \
	-p 80:80 \
	-v /sys/devices/platform/coretemp.0/hwmon/hwmon1/temp1_input:/sys/class/thermal/thermal_zone0/temp \
	-v /etc/localtime:/etc/localtime \
	-v /storage/pihole/:/etc/pihole \
	-v /storage/pihole/dnsmasq.d/:/etc/dnsmasq.d \
	-v /storage/html/:/var/www/html/html/ \
	-h $(cat /etc/hostname) \
	-e ServerIP=$(ip route get 8.8.8.8 | awk '{ print $NF; exit }') \
#	-e ServerIPv6=$(ip -6 route get 2001:4860:4860::8888 | awk '{ print $7; exit }') \
	-e WEBPASSWORD=123456 \
	--restart=always \
	diginc/pi-hole:latest

Problems

• Hostname
  I think the hostname should automatically be the hostname of my machine, but your project always creates a random one. Shouldn't this be the default behaviour?
  Solved it with -h $(cat /etc/hostname)
• Timezone
  When creating the project with -e TZ=Europe/Berlin the clock would always be one hour too early.
  Solved it with -v /etc/localtime:/etc/localtime
• Temperature
  Could actually be a device-specific problem but /sys/class/thermal/thermal_zone0/temp outputs -263200 (absolute zero).
  Solved it with -v /sys/devices/platform/coretemp.0/hwmon/hwmon1/temp1_input:/sys/class/thermal/thermal_zone0/temp

IPv6

This actually makes no sense to me. The default IPv6 function print $10 doesn't output anything, the thing I'm looking for is print $7.
Here is the output of ip -6 route get 2001:4860:4860::8888

2001:4860:4860::8888 via fe80::925c:44ff:fexx:xx7a
dev eth0
src 2a02:xxxx:xxx:b500:f64d:30ff:fexx:xxd0
metric 1024

But if I do that it fails here
https://github.com/diginc/docker-pi-hole/blob/00a87646895daee3800ad5652ef13ce41478f0f9/bash_functions.sh#L37-L41

Now when I don't specify an IPv6 address at all, it obviously doesn't block IPv6. But if I instead pass the link-local adress with print $3 it somehow (?) works.

Cheers

[diginc]

The ip route commands are just meant to be helpers for the majority of users. If the automatic lookup of your IPv6 is failing I'd recommend just looking up your IP manually and setting

…

-e ServerIPv6='2a02:xxxx:xxx:b500:f64d:30ff:fexx:xxd0'

On Thu, Dec 14, 2017 at 3:10 PM Anuskuss ***@***.***> wrote: I'm fairly new to docker and pi-hole and didn't even know that this project had a github repo, so I can finally share my problems I've encounterd in the hope to receive some support. Current Configuration - Intel NUC7i5BNK <https://www.intel.de/content/www/de/de/products/boards-kits/nuc/kits/nuc7i5bnk.html> - LibreELEC 8.2 <https://github.com/LibreELEC/LibreELEC.tv/tree/libreelec-8.2> - Kodi Docker addon 17.10.0 <https://github.com/LibreELEC/LibreELEC.tv/blob/master/packages/addons/service/docker/package.mk> (based of docker-ce <https://github.com/docker/docker-ce/>) - diginc/pi-hole:latest Config docker run -d \ --name pihole \ -p 53:53/tcp \ -p 53:53/udp \ -p 80:80 \ -v /sys/devices/platform/coretemp.0/hwmon/hwmon1/temp1_input:/sys/class/thermal/thermal_zone0/temp \ -v /etc/localtime:/etc/localtime \ -v /storage/pihole/:/etc/pihole \ -v /storage/pihole/dnsmasq.d/:/etc/dnsmasq.d \ -v /storage/html/:/var/www/html/html/ \ -h $(cat /etc/hostname) \ -e ServerIP=$(ip route get 8.8.8.8 | awk '{ print $NF; exit }') \# -e ServerIPv6=$(ip -6 route get 2001:4860:4860::8888 | awk '{ print $7; exit }') \ -e WEBPASSWORD=123456 \ --restart=always \ diginc/pi-hole:latest Problems - *Hostname* I think the hostname should automatically be the hostname of my machine, but your project always creates a random one. Shouldn't this be the default behaviour? Solved it with -h $(cat /etc/hostname) - *Timezone* When creating the project with -e TZ=Europe/Berlin the clock would always be one hour too early. Solved it with -v /etc/localtime:/etc/localtime - *Temperature* Could actually be a device-specific problem but /sys/class/thermal/thermal_zone0/temp outputs -263200 (absolute zero). Solved it with -v /sys/devices/platform/coretemp.0/hwmon/hwmon1/temp1_input:/sys/class/thermal/thermal_zone0/temp IPv6 This actually makes no sense to me. The default IPv6 function print $10 doesn't output anything, the thing I'm looking for is print $7. Here is the output of ip -6 route get 2001:4860:4860::8888 2001:4860:4860::8888 via fe80::925c:44ff:fexx:xx7a dev eth0 src 2a02:xxxx:xxx:b500:f64d:30ff:fexx:xxd0 metric 1024 But if I do that it fails here https://github.com/diginc/docker-pi-hole/blob/00a87646895daee3800ad5652ef13ce41478f0f9/bash_functions.sh#L37-L41 Now when I don't specify an IPv6 address at all, it obviously doesn't block IPv6. But if I instead pass the link-local adress with print $3 it somehow (?) works. Cheers — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#199>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA0-ok3a9umnDLWv4hXztFCgK6b78mRbks5tAY7VgaJpZM4RCqwR> .

[Anuskuss]

That doesn't work, apparently my IPv6 address is not valid.

[diginc]

Resolved? Feel free to re-open or add any new info that may help others.

[01010101001]

I confirm that IPv6 does not work out of the box and for some reason Anuskuss's solution is correct - you need the "via" field of that route get command (for me it was $5 however).

[diginc]

Are you also running LibreELEC or another OS? I'm pretty sure this is just a difference in ip route command output that varies between OSs. Please lookup your IP address manually and pass it into the container environment variables.

The example docker run in the readme is exactly that - as it says: This is just an example and might need changing.

[01010101001]

I am running a freshly installed debian stretch server image. here's how the ip command output looks like:

# ip -6 route get 2001:4860:4860::8888
2001:4860:4860::8888 from :: via fe80::a:b:c:d dev enp0s25 proto ra src $myip metric 100  mtu 1492 pref medium

selecting $5 with awk got IPv6 blocking working for me (I would have expected $11 (src) to be needed but that generates the "does not appear to be a valid address" error)

[diginc]

This should work better

echo '2001:4860:4860::8888 from :: via fe80::a:b:c:d dev enp0s25 proto ra src $myip metric 100  mtu 1492 pref medium' | awk '{for(i=1;i<=NF;i++) if ($i=="src") print $(i+1)}'
$myip

[nxadm]

Hostname
I think the hostname should automatically be the hostname of my machine, but your project always creates a random one. Shouldn't this be the default behaviour?
Solved it with -h $(cat /etc/hostname)

No, Docker's default hostname are random because most of the time you don't care about them. The -h is there in case it matters (e.g. when sending to a syslog server configured that way). In the case of pihole, it does not matter.