dns

Using Consul DNS in a simple setup

This setup will start consul as DNS server which will forward all DNS requests that can't be answered to the Google DNS Server 8.8.8.8

Starting Consul

There is a config file located in this Directory and a script that starts consul with the correct parameters. So simple type:

./start_consul.sh

You will be asked for your password. This is because consul is started using sudo. This is necessary to start DNS on port 53.

Query DNS

You can test this setup using dig:

dig @127.0.0.1 $(hostname).node.consul

Lookup of the consul service itself:

dig @127.0.0.1 consul.service.consul

Lookup including SRV Record (for Port information)

dig @127.0.0.1 consul.service.consul SRV

Set as DNS Server

WARNING: Please change your DNS Server only if you know how to revert this :)

Simply set your DNS Server to 127.0.0.1

Know every program should be able to resolve addresses within the consul Top Level Domain.