This shell script implements dynamic DNS using the DomRobot XML-RPC API by INWX.
This script can update nameserver entries with your current WAN IPv4 and IPv6 addresses.
It uses the nameserver.updateRecord
method of the API.
advantage: You don't need payed dynDNS-accounts for multiple domains.
disadvantage: The minimum TTL is 300 (5 minutes). The dynDNS-Service allowes 60 (1 minute).
There exists the dyndns.updateRecord
method in the DomRobot API. Therefore you need a DynDNS-account by INWX. If you need this option, feel free to change the script to your needs.
In order to run the script you need to have installed the following command line tools:
- curl
- awk
- nslookup or drill
Simply clone this project or download the master.zip
and extract it, e.g., using wget
and 7z x master.zip
.
Place your config files in the nsupdate.d
folder. A dist.config.sample
is provided. At least one config file needs to exist, ending with `.config.
All .config files (one for each dns-record) will be processed by looping them.
Simply copy the provided dist.config.sample and adjust your config to your needs.
For home.example.com you may create:
home.example.com-ipv4.config and/or
home.example.com-ipv6.config
With crontab -e
you can add the following line for running the script every 5 minutes:
*/5 * * * * bash /home/$USER/nsupdate/nsupdate.sh
2020-05-11
- Updated Readme with some hints
- Updated config.sample with a hint for TTL
2020-03-31
- Made time to live configurable
2019-12-20
- Fixed DomRobot XML-RPC API syntax
- Added some more documentation
2015-07-22
- Changed the way how the existence of config files is checked
- Updated the sample config file to reflect new options from the last updates
- The script is reported to work in csh and sh too
2015-06-30
- Fixed the check for config files. Can now handle more than one file
- Changed warning for missing config files
2015-01-12
- Added checks for needed commands
- Added checks for existing config file
- Added requirements to README.md
2014-02-21
- Added support for IPv6
- Added support for config files
2014-01-02
- Changed default IP check site to ip.dblx.io
- Added a switch to use drill instead of nslookup because FreeBSD 10 switched from bind to unbound
- Renamed $HOSTNAME to $DOMAIN to work around potential conflicts with $HOSTNAME that's set by the host itself
2014-01-06
- Config files are sourced relative to the script folder now
2013-07-12
- First commit
nsupdate is distributed under the MIT license, which is similar in effect to the BSD license.
Copyright 2013 Christian Busch (http:https://github.com/chrisb86)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.