dockerdns

This tool sets up DNS resolution for Docker containers.

Use dnsdocker to resolve container names with the .docker TLD and configure the local dnsmasq as the default DNS server for Docker.

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

Role Variables

• iface: Name of the dummy network interface. (e.g., dockerdns0)
• network: IPv4 range for DNS servers (e.g., 192.168.7.0/24)
• domain: Domain for the containers (e.g., docker)

Example Playbook

- hosts: localhost
  roles:
  - bersace.dockerdns

Copyright

Licensed under BSD by Étienne BERSAC.