109 lines
3.5 KiB
Markdown
109 lines
3.5 KiB
Markdown
ddns
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====
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A self-hosted Dynamic DNS solution similar to DynDNS or NO-IP.
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You can use a hosted version at [ddns.pboehm.org](http://ddns.pboehm.org/) where you can register a host under the `d.pboehm.de` domain (e.g `test.d.pboehm.de`).
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## How can I update my IP if it changes?
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`ddns` is built around a small webservice, so that you can update your IP address, simply by calling an URL periodically through `curl` (using `cron`). Hosts that haven't been updated for 10 days will be automatically removed. This can be configured in your own instance.
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An API similar to DynDNS/NO-IP hasn't been implemented yet.
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## Self-Hosting
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### Requirements
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* A custom domain where the registrar allows NS-Records for subdomains
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* A global accessible Server running an OS which is supported by the tools listed below
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* A running [Redis](http://redis.io) instance for data storage
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* An installation of [PowerDNS](https://www.powerdns.com/) with the Pipe-Backend included
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* [Go](http://golang.org/) 1.3
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### Installation
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The following instructions are valid for Ubuntu/Debian. Some files/packages
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could have other names/locations, please search for it.
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You should have a working Go environment (correct `$GOPATH`).
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$ go version # check that you have go 1.3 installed
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go version go1.3 linux/amd64
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Then install `ddns` via:
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$ go get github.com/pboehm/ddns
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$ ls $GOPATH/bin/ddns # the displayed path will be used later
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/home/user/gocode/bin/ddns
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#### Backend
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Install `pdns` and `redis-server`:
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$ sudo apt-get install redis-server pdns-server pdns-backend-pipe
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Both services should start at boot automatically. You should open `udp/53` and
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`tcp/53` on your Firewall so that `pdns` can be be used from outside of your
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host.
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$ sudo vim /etc/powerdns/pdns.d/pipe.conf
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`pipe.conf` should have the following content. Please adjust the path of `ddns`
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and the values supplied to `--domain` and `--soa_fqdn`:
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launch=pipe
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pipebackend-abi-version=1
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pipe-command=/home/user/gocode/bin/ddns --soa_fqdn=dns.example.com --domain=sub.example.com backend
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Then restart `pdns`:
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$ sudo service pdns restart
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#### Frontend
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`ddns` includes a webservice which is used for creating new hosts and updating
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ip addresses. I prefer using `nginx` as a reverse proxy and not running `ddns`
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on port 80. As a process manager, I prefer using `supervisord` so it is
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described here.
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$ sudo apt-get install nginx supervisor
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Create a supervisor config file for ddns:
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$ sudo vim /etc/supervisor/conf.d/ddns.conf
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$ cat /etc/supervisor/conf.d/ddns.conf
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[program:ddns]
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directory = /tmp/
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user = user
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command = /home/user/gocode/bin/ddns --domain=sub.example.com web
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autostart = True
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autorestart = True
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redirect_stderr = True
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Restart the `supervisor` daemon and `ddns` listens on Port 8080 (can be
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changed by adding `--listen=:1234`).
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$ sudo service supervisor restart
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Now you have to add a nginx virtual host for `ddns`:
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$ sudo vim /etc/nginx/sites-enabled/default
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$ cat /etc/nginx/sites-enabled/default
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server {
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listen 80;
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server_name ddns.example.com;
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location / {
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proxy_pass http://127.0.0.1:8080;
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-for $proxy_add_x_forwarded_for;
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proxy_connect_timeout 300;
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}
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}
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Please adjust the `server_name` with a valid FQDN. Now we only have to restart
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`nginx`:
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$ sudo service nginx restart
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