dockerdns

Setup docker container DNS resolution.

Run dnsdocker to resolve containers name with .docker TLD and setup local dnsmasq as docker default nameserver.

LAN      local dnsmasq     Docker Engine            dnsdock                   container
 |              |                |                     |                          |
 |              |                *----- set local dnsmasq as nameserver --------->*
 |              |                |                     |                          |
 |              *<--------------------- DNS queries ------------------------------*
 |              |                |                     |                          |
 |              *---------- delegate .docker --------->*                          |
 |              |                |                     |                          |
 *<- delegate --*                |                     |                          |
 |              |                |                     |                          |

Role Variables

# Name of the dummy network interface.
iface: dockerdns0
# IPv4 range in which DNS servers will bind an address.
network: 192.168.7.0/24
# Containers will be member of this domain:
domain: docker

Example Playbook

- hosts: localhost
  roles:
  - bersace.dockerdns

Copyright

Licensed under BSD by Étienne BERSAC <@bersace>.