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Change README.md

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Thomas Oettli
2026-01-23 02:02:53 +01:00
parent 65760b1d96
commit ff48f7b016
1 changed files with 64 additions and 2 deletions
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README.md
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@@ -198,6 +198,7 @@ notify_change = []
| ipv6 (IPv6 address) | myip6, ipv6, ip6 |
| username | username, user |
| password | password, pass, token |
| notify_change | notify_change |
## CLI Usage
@@ -280,7 +281,7 @@ ddns-service --daemon --debug
### Request
```
GET /update?hostname=mypc.dyn.example.com[&myip=1.2.3.4][&myip6=2001:db8::1]
GET /update?hostname=mypc.dyn.example.com[&myip=1.2.3.4][&myip6=2001:db8::1][&notify_change=1]
Authorization: Basic base64(username:password)
```
@@ -289,6 +290,8 @@ Authentication can also be provided as query parameters:
GET /update?hostname=mypc.dyn.example.com&username=myuser&password=secret
```
Set `notify_change=1` to receive an email notification when the IP address changes. Requires email to be enabled and a change notification template configured.
### IP Detection
- If `myip` and/or `myip6` provided: use those values
@@ -324,6 +327,11 @@ With explicit IP:
curl -u "username:password" "https://ddns.example.com/update?hostname=mypc.dyn.example.com&myip=1.2.3.4"
```
With change notification:
```bash
curl -u "username:password" "https://ddns.example.com/update?hostname=mypc.dyn.example.com&notify_change=1"
```
### wget
```bash
@@ -352,9 +360,63 @@ Set `expiry_ttl = 0` to disable expiration entirely for a hostname.
When a hostname expires:
1. DNS records (A and/or AAAA) are deleted
2. Email notification is sent to the user
2. Email notification is sent to the user (if configured)
3. Records can be restored by sending a new update request
## Email Notifications
Two types of email notifications are supported:
- **Change notifications**: Sent when IP address changes, if client includes `notify_change=1` parameter
- **Expiry notifications**: Sent automatically when hostname expires due to inactivity
### Configuration
Enable email and configure templates in `[email]` section:
```toml
[email]
enabled = true
smtp_host = "localhost"
from_address = "ddns@example.com"
change_notification_template = "/etc/ddns-service/change_notification.j2"
expiry_notification_template = "/etc/ddns-service/expiry_notification.j2"
```
Example templates are provided in the `files/` directory.
### Template Variables
Templates use Jinja2 syntax. Available variables:
**Change notification:**
| Variable | Description |
|----------|-------------|
| hostname | Hostname (without zone) |
| zone | DNS zone |
| fqdn | FQDN (hostname.zone) |
| ipv4_changed | Boolean, IPv4 changed |
| ipv4 | Current IPv4 address |
| last_ipv4_update | Last IPv4 update time |
| ipv6_changed | Boolean, IPv6 changed |
| ipv6 | Current IPv6 address |
| last_ipv6_update | Last IPv6 update time |
| expiry_ttl | Expiry TTL in seconds |
**Expiry notification:**
| Variable | Description |
|----------|-------------|
| hostname | Hostname (without zone) |
| zone | DNS zone |
| fqdn | FQDN (hostname.zone) |
| ipv4_expired | Boolean, IPv4 expired |
| last_ipv4 | Last IPv4 address |
| last_ipv4_update | Last IPv4 update time |
| ipv6_expired | Boolean, IPv6 expired |
| last_ipv6 | Last IPv6 address |
| last_ipv6_update | Last IPv6 update time |
| expiry_ttl | Expiry TTL in seconds |
## Logging
The daemon supports stdout, syslog, and file logging targets.