dns解析服务器程序：redis-dns

DNS server configured using redis. Based on iriscouche's dnsd.

Introduction

A Node.js DNS server that is configured using Redis. Optionally names not found in Redis are looked up in Google's DNS server (8.8.8.8).

Installation

Prerequisites:

• Node.js
• Redis server

Make sure to setup DNS correctly on the hosts where you want to use this DNS server. Check /etc/resolv.conf if you're running on unix. In Windows, check the network settings in the control panel.

Install: npm install --production

Copy config.json.template to config.json and update with your settings. Start the server: npm start or yarn start.

To use a different port, etc. either edit the config.json file or use and ENV. For example to set the dns port to 6000 and then start the server run the following.

export DNS_PORT=6000 && yarn start

Test the setup

Start with setting up some hosts with their IP's in Redis. Make sure Redis is installed and running.

redis-cli set redis-dns:dbserver.redis-dns.local 10.0.0.1
redis-cli set redis-dns:appserver.redis-dns.local 10.0.0.2

You can use dig for testing purposes. This does not require that you change the DNS of the machine you are using for the tests since you can use an alternate port in dig.

Should give 10.0.0.1: dig @localhost -p 5353 dbserver.redis-dns.local A

Should give empty answer: dig @localhost -p 5353 dbserverrrr.redis-dns.local A

Should give empty answer: dig @localhost -p 5353 dbserver.redis-dns.local MX

Docker setup

Build the image: docker build --rm -t redisdns .

Start the container:

docker run -d -p 5353 --name redisdns redisdns

Docker-compose setup

Build the image: docker-compose build dns

Start the container:

docker-compose up -d

from https://github.com/colmsjo/redis-dns