ddns-rs

ddns-rs is an easy to used program that help you update your dns record.

Features

• Both support IPV4 and IPV6
• Support many DNS providers
• Support auto create dns record to provider
• Support many ways to obtain IP
• Multitasking support

Quick start

Crate your config file config.toml like this:

[base]
task_startup_interval = 5
task_retry_timeout = 10

[tasks]
t1 = {provider = "p1", family = "ipv4", interval = 10, interface = "i1", notifiers = ["n1"]}

[providers]
p1 = {kind = "cloudflare", force = false, ttl = 600, token = "your_cloudflare_token", dns = "www.example.com"}

[interfaces]
i1 = {kind = "stock", name = "eth0"}

[notifiers]
n1 = {kind = "empty"}

Run in background:

.\ddns-rs -vvv -d

Run as systemd service:

Create account for ddns-rs running

sudo adduser --system --gecos "DDNS-RS Service" --disabled-password --group --no-create-home ddns

Move the ddns-rs to /usr/bin and then chown

sudo chown ddns:ddns /usr/bin/ddns-rs

Create the directory that is required by ddns-rs

sudo mkdir /var/log/ddns-rs
sudo chown -R ddns:ddns /var/log/ddns-rs

Move your config.toml to /etc/ddns-rs

sudo mkdir /etc/ddns-rs
sudo chown -R ddns:ddns /etc/ddns-rs

Create systemd service:

sudo tee /etc/systemd/system/ddns-rs.service > /dev/null <<EOF
[Unit]
Description=ddns-rs service
Wants=network-online.target
After=local-fs.target network-online.target nss-lookup.target

[Service]
Type=exec
User=ddns
Group=ddns
UMask=007
PrivateTmp=false
ExecStart=/usr/bin/ddns-rs -vvv -C /etc/ddns-rs -L /var/log/ddns-rs
TimeoutStopSec=60
Restart=on-failure
SyslogIdentifier=ddns-rs

[Install]
WantedBy=multi-user.target
EOF

Start ddns-rs

sudo systemctl daemon-reload
sudo systemctl start ddns-rs.service

Enable ddns-rs

sudo systemctl enable ddns-rs.service

Document

Base

[base]
task_startup_interval = 10
task_retry_timeout = 10

The task_startup_interval field specific task start interval.

The task_retry_timeout field specific task retry timeout when task failed.

Provider

The ttl field is supported by all interfaces, used when auto create dns record.

The force field is supported by all interfaces, meaning that the record is forced to be updated even if the target IP address is already the value we want to update.

The kind field indicates which provider will be used.

Currently, we support the following providers

• Cloudflare
• Godaddy
• Fake

Cloudflare

kind = "cloudflare"
force = false
ttl = 600
token = "your_cloudflare_token"

Godaddy

kind = "godaddy"
force = false
ttl = 600
api_key = "your_cloudflare_api_key"
secret = "your_cloudflare_secret"

Fake

force = false
ttl = 600
kind = "fake"

A placeholder provider, usually used with a notifier. So the meaning of the force field has a little difference, when force is true, notification are sent even if the current value is the same as the previous value that cached by the fake provider.

The ttl here has a different meaning, it indicates how long it will take for the record that stored in the Fake Provider to be deleted

Interface

Currently, we support the following interfaces

• Stock, meaning get the IP from interface self
• Peer, meaning get the IP from the server you specify

Stock

kind = "stock"
name = "you_interface_name"

Peer

kind = "peer"
url_v4 = "url_of_return_ipv4_address"
url_v6 = "url_of_return_ipv6_address"
ipv4_field_path = "regex:<capture_group_number:expression>"
ipv6_field_path = "json:</path_of_ip_field>"

Notifier

Currently, we support the following notifiers

• Empty
• Email
• Webhook

Empty

A placeholder notifier, nothing to do.

kind = "empty"

Email

Send an email when ip address has been changed.

kind = "email"
smtp_host = ""
smtp_port = ""
smtp_starttls = true
smtp_username = ""
smtp_password = ""
subject = ""
from = ""
to = ""

The from is optional, default is same as smtp_username.

The subject is optional, default is DDNS-RS Notification。

Webhook

Call your webhook when ip address has been changed.

kind = "webhook"
url = ""
authorization_header = ""
local_address = ""

The local_address can be 0.0.0.0 or :: to force the ip family to be used。

Task

provider = "name_of_provider_in_the_config_file"
family = "ipv4" # ipv4, ipv6, all
interval = 10 # in second
autostart = true # default true
interface = "name_of_interface_in_the_config_file"
notifiers = ["name_of_notifier_in_the_config_file"]

License

MIT