Update
Update domain name via DDNS services¶
In order to update a domain name with a DynDNS client you should register to a DDNS service first, configure the desired FQDN there and retrieve the authentication token or the update key required to authenticate to the service.
Tip
Some DynDNS providers do not provide authentication tokens or update keys: in that case
the authentication token can be generated using the user and password of the service account
concatenated by a colon: user:password.
To update a domain name (FQDN, type A record) to the current public IP address of the host run:
where<DDNS_URL> is the http endpoint of the DDNS service,
<FQDN> is the domain to be updated and <AUTH_TOKEN> is the Update Key or the API authentication token.
Example
| Required data | Sample value |
|---|---|
| DDNS provider | No-IP |
| FQDN to update | myhost.ddns.net |
| user | 68816xj |
| password | v4UMHzugodpE |
Update domain name via Cloudflare¶
Note
To update a FQDN via Cloudflare you need to buy a domain at Cloudflare (or transfer it to).
You also need to create a Cloudflare API token with Zone.DNS Edit permission following the
Cloudflare docs.
ddflare can update existing type A DNS records but cannot create new ones yet, so the
record should be created in advance.
To create a type A record see Cloudflare's
Manage DNS Records
docs.
Tip
When creating a type A DNS record pay attention to the value of the TTL field:
it tracks the number of seconds DNS clients and DNS resolvers are allowed to
cache the resolved IP address.
You may want to keep the TTL low (the allowed minimum is 60 secs) if you plan to use the record
to track the (dynamic) IP address of a host in a DDNS scenario.
<FQDN> is the domain to be updated and <CLOUDFLARE_TOKEN> is the Cloudflare API token.