MicroDNS
A tiny dockerized DNS server in Go that (almost) always returns the same IP for any query sent to it.
Quick Start (TL;DR)
docker run -it --rm -p 53:53 -p 53:53/udp fffaraz/microdns:latest -log \
-ipv4 $(dig +short myip.opendns.com @resolver1.opendns.com) \
-ipv6 $(dig +short myip.opendns.com @2620:0:ccc::2 aaaa)
Arguments & Options
-ipv4 Default IPv4 to return (default: 127.0.0.1)
-ipv6 Default IPv6 to return (default: ::1)
-ttl Time to live value (default: 86400)
-log Log requests to stdout (default: false)
-conf Config file (default: /home/dns.conf)
Config file format
domain1.com. 127.0.0.1 ::1
domain2.com. 127.0.0.1 ::1
www.domain1.com. 127.0.0.1 ::1
ftp.domain2.com. 127.0.0.1 ::1
How to Run
docker run -d --restart=always -p 53:53 -p 53:53/udp --name microdns \
-v /home/microdns:/home \
fffaraz/microdns:latest \
-ipv4 127.0.0.1 \
-ipv6 ::1 \
-ttl 86400 \
-log \
-conf /home/dns.conf
Request Stats
IP Adresses: cat log.out | cut -f2 | sort | uniq -cd | sort -nr
Domains: cat log.out | cut -f3 | sort | uniq -cd | sort -nr
Metadata API
curl http://169.254.169.254/metadata/v1/interfaces/public/0/ipv4/address
curl http://169.254.169.254/metadata/v1/interfaces/public/0/ipv6/address