If you use ReadyNAS OS 6 you can install Pi-hole in Docker container:
docker run --name my-new-pi-hole \ -e ServerIP=22.214.171.124 \ -e DNS1=192.168.1.4 \ -e WEBPASSWORD=secret \ -d \ -p 8080:80 -p 53:53 -p 53:53/udp \ diginc/pi-hole
you don’t have to run
docker pull diginc/pi-hole
it will be done automatic (or rather automagic).
As You can see I’ve set up several parameters:
- run is command to docker to run container
- –name my-new-pi-hole is name of container (optional)
- -e means Environment Variable – it is to pass some options to container
- ServerIP – it is IP that Pi-hole should use (mandatory)
- DNS1 – IP of your DNS server (optional) – if you not provide it will use google’s DNS
- WEBPASSWORD (useful) – you will need it to login to administration portal
- -d – tells to docker that this container should work in background
- -p – is port redirection from your docker machine to port in container
- 8080:80 (useful) – is redirection of 8080 port of your docker machine to port 80 in container
- 53:53 (optional)- is redirection of 53 port of your docker machine to port 53 in container (not necessary in my case)
- 53:53/udp (very useful) – is the same for UDP port – this is what we need to work
- diginc/pi-hole – is of course name of image to run
Now you can use command
to get some information about your container
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 891aeb2c127b diginc/pi-hole "/s6-init" 7 seconds ago Up 2 seconds (health: starting) 0.0.0.0:53->53/tcp, 0.0.0.0:53->53/udp, 0.0.0.0:8080->80/tcp my-new-pi-hole
as you can see status is health: starting, after some time it will change to healthy.
Now you can login to (192.168.1.28 is address of may docker machine) http://192.168.1.28:8080/admin/ to check that no one has used your server (Total queries 0).
Let’s check if it works:
root@mynas:~# host jaqb.gda.pl 192.168.1.28 Using domain server: Name: 192.168.1.28 Address: 192.168.1.28#53 Aliases: jaqb.gda.pl has address 126.96.36.199 jaqb.gda.pl mail is handled by 0 mail.jaqb.gda.pl.
Now it’s enough to change default DNS in your LAN to your docker machine (in my case 192.168.1.28).