certbot-dns-ispconfig-ddns 1.0.0

Obtain certificates using a DNS TXT record for ISPConfig domains with DDNS module tokens

certbot-dns-ispconfig-ddns

ISPConfig DNS Authenticator plugin for Certbot using tokens from the ISPConfig DDNS module

This plugin automates the process of completing a dns-01 challenge by creating, and subsequently removing, TXT records.

Configuration of ISPConfig

In the DNS -> Dynamic DNS -> Tokens you need to have a token with the following rights:

• Allowed zones: all DNS zones for which you want to create ssl certificates
• Allowed record types: TXT
• Limit records: _acme-challenge

If you want to create certificates for subdomains, they must be included in the Limit records: _acme-challenge,_acme-challenge.subdomain1,_acme-challenge.subdomain2

Installation

pip install certbot-dns-ispconfig-ddns

Usage

Credentials file or cli parameters

You can either use cli parameters to pass authentication information to certbot:

...
--dns-ispconfig-ddns-endpoint <your-ispconfig-url (e.g. https://server.example.com:8080>
--dns-ispconfig-ddns-token <your-ddns-token>

Or to prevent your credentials from showing up in your bash history, you can also create a credentials-file ispconfig-ddns.ini (the name does not matter) with the following content:

dns_ispconfig_ddns_endpoint=<your-ispconfig-url (e.g. https://server.example.com:8080>
dns_ispconfig_ddns_token=<your-ddns-token>

And then instead of using the --dns-ispconfig-ddns-* parameters above, you can use

...
--dns-ispconfig-ddns-credentials </path/to/your/ispconfig-ddns.ini>

You can also mix these usages, though the cli parameters always take precedence over the ini file.

Examples

To acquire a single certificate for both example.com and *.example.com:

certbot certonly \
    --non-interactive \
    --agree-tos \
    --email <your-email> \
    --preferred-challenges dns \
    --authenticator dns-ispconfig-ddns \
    --dns-ispconfig-ddns-endpoint <https://server.example.com:8080> \
    --dns-ispconfig-ddns-token <your-ddns-token> \
    --dns-ispconfig-ddns-propagation-seconds 60 \
    -d 'example.com' \
    -d '*.example.com'

Docker

In order to create a docker container with a certbot-dns-ispconfig installation, create an empty directory with the following Dockerfile:

    FROM certbot/certbot
    RUN pip install certbot-dns-ispconfig-ddns

Proceed to build the image::

    docker build -t certbot/dns-ispconfig-ddns .

Once that's finished, the application can be run as follows::

docker run --rm \
    -v /var/lib/letsencrypt:/var/lib/letsencrypt \
    -v /etc/letsencrypt:/etc/letsencrypt \
    --cap-drop=all \
    certbot/dns-ispconfig-ddns certonly \
    --non-interactive \
    --agree-tos \
    --authenticator dns-ispconfig-ddns \
    --dns-ispconfig-ddns-propagation-seconds 60 \
    --dns-ispconfig-ddns-credentials /etc/letsencrypt/.secrets/domain.tld.ini \
    -d example.com -d '*.example.com'