Dynamic DNS Server for Docker with Web UI written in Go

With docker-ddns-server you can set up your own dynamic DNS server. This project is inspired by https://github.com/dprandzioch/docker-ddns . In addition to the original version, you can setup and maintain your dyndns entries via simple web ui.

Installation

You can either take the docker image or build it on your own.

Using the docker image

Just customize this to your needs and run:

docker run -it -d \
    -p 8080:8080 \
    -p 53:53 \
    -p 53:53/udp \
    -v /somefolder:/var/cache/bind \
    -v /someotherfolder:/root/database \
    -e DDNS_ADMIN_LOGIN=admin:123455546. \
    -e DDNS_DOMAINS=dyndns.example.com \
    -e DDNS_PARENT_NS=ns.example.com \
    -e DDNS_DEFAULT_TTL=3600 \
    --name=dyndns \
    bbaerthlein/docker-ddns-server:latest

Using docker-compose

You can also use Docker Compose to set up this project. For an example docker-compose.yml, please refer to this file: https://github.com/benjaminbear/docker-ddns-server/blob/master/deployment/docker-compose.yml

Configuration

DDNS_ADMIN_LOGIN is a htpasswd username password combination used for the web ui. You can create one by using htpasswd:

htpasswd -nb user password

If you want to embed this into a docker-compose.yml you have to double the dollar signs for escaping:

echo $(htpasswd -nb user password) | sed -e s/\\$/\\$\\$/g

If DDNS_ADMIN_LOGIN is not set, all /admin routes are without protection. (use case: auth proxy)

DDNS_DOMAINS are the domains of the webservice and the domain zones of your dyndns server (see DNS Setup) i.e. dyndns.example.com,dyndns.example.org (comma separated list)

DDNS_PARENT_NS is the parent name server of your domain i.e. ns.example.com

DDNS_DEFAULT_TTL is the default TTL of your dyndns server.

DDNS_CLEAR_LOG_INTERVAL optional: clear log entries automatically in days (integer) e.g. DDNS_CLEAR_LOG_INTERVAL:30

DDNS_ALLOW_WILDCARD optional: allows all *.subdomain.dyndns.example.com to point to your ip (boolean) e.g. true

DDNS_LOGOUT_URL optional: allows a logout redirect to certain url by clicking the logout button (string) e.g. https://example.com

DNS setup

If your parent domain is example.com and you want your dyndns domain to be dyndns.example.com, an example domain of your dyndns server would be blog.dyndns.example.com.

You have to add these entries to your parent dns server:

dyndns                   IN NS      ns
ns                       IN A       <put ipv4 of dns server here>
ns                       IN AAAA    <optional, put ipv6 of dns server here>

Updating entry

After you have added a host via the web ui you can setup your router. Example update URL:

http://dyndns.example.com:8080/update?hostname=blog.dyndns.example.com&myip=1.2.3.4
or
http://username:[email protected]:8080/update?hostname=blog.dyndns.example.com&myip=1.2.3.4

this updates the host blog.dyndns.example.com with the IP 1.2.3.4. You have to setup basic authentication with the username and password from the web ui.

If your router doensn't support sending the ip address (OpenWRT) you don't have to set myip field:

http://dyndns.example.com:8080/update?hostname=blog.dyndns.example.com
or
http://username:[email protected]:8080/update?hostname=blog.dyndns.example.com

The handler will also listen on:

• /nic/update
• /v2/update
• /v3/update