Personal DNS Docker Solution

Purpose

In order to further learn Docker (for the first time essentially) wanted to create a multi-tier solution to "optimizing" my home DNS solution.

Initially I am thinking

Router -> NXFilter -> PiHole -> OpenDNS

Since I am not interested in tracking what device queries which domain, I prefer to use my Ubiquiti Edgrouter as the prefered DNS server for my home network. This makes it easy to swap upstream servers without having to monkey with DHCP.

Process

Going to play with the packetworks version of nxfilter docker image first. If it doesn't work for me I will build my own. I would like to mount the existing database and logs into the container to keep setup as minimal as possible. After all, docker images are made to be disposable.

docker pull docker.io/packetworks/nxfilter-base
docker run -itd docker.io/packetworks/nxfilter-base
docker exec -it c675111bd776 bash
                                        ##        .
                                  ## ## ##       ==
                               ## ## ## ##      ===
                           /""""""""""""""""\___/ ===
                      ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ /  ===- ~~~
                           \______ o          __/
                             \    \        __/
                              \____\______/
   ___          _                         ____             __
  <  /_________(_)__  ____  ________     / __ \____  _____/ /_____  _____
  / / ___/ ___/ / _ \/ __ \/ ___/ _ \   / / / / __ \/ ___/ //_/ _ \/ ___/
 / (__  ) /__/ /  __/ / / / /__/  __/  / /_/ / /_/ / /__/ ,< /  __/ /
/_/____/\___/_/\___/_/ /_/\___/\___/  /_____/\____/\___/_/|_|\___/_/
Alpine Linux 3.1 image. (Linux 4.4.0-77-generic #98-Ubuntu SMP Wed Apr 26 08:34:02 UTC 2017)
- with Java(TM) SE Runtime Environment (build 1.7.0_80-b15)

oot@~ > cat /etc/os-release 
NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.1.4
PRETTY_NAME="Alpine Linux v3.1"
HOME_URL="http://alpinelinux.org"
BUG_REPORT_URL="http://bugs.alpinelinux.org"

root@~ > head /nxfilter/readme.txt 
*****************************************************************
NxFilter v4.3.2.7
  Author : Jinhee Lee
  Homepage : http://www.nxfilter.org
  Contact : support@nxfilter.org
*****************************************************************

NxFilter is a property of Jahastech.

So far so good. It was nice to see the latest version listed as my current instance was 4.2.3. Now I needed to shutdown everything, and re-run the container mounting the following

• /nxfilter/backup
• /nxfilter/db
• /nxfilter/log

to my primary storage backend.