mirror of
https://github.com/coredns/coredns.git
synced 2025-11-03 18:53:13 -05:00
59 lines
1.8 KiB
Markdown
59 lines
1.8 KiB
Markdown
# transfer
|
|
|
|
## Name
|
|
|
|
*transfer* - perform (outgoing) zone transfers for other plugins.
|
|
|
|
## Description
|
|
|
|
This plugin answers zone transfers for authoritative plugins that implement `transfer.Transferer`.
|
|
|
|
*transfer* answers full zone transfer (AXFR) requests and incremental zone transfer (IXFR) requests
|
|
with AXFR fallback if the zone has changed.
|
|
|
|
When a plugin wants to notify it's secondaries it will call back into the *transfer* plugin.
|
|
|
|
The following plugins implement zone transfers using this plugin: *file*, *auto*, *secondary*, and
|
|
*kubernetes*. See `transfer.go` for implementation details if you are a plugin author that wants to
|
|
use this plugin.
|
|
|
|
## Syntax
|
|
|
|
~~~
|
|
transfer [ZONE...] {
|
|
to ADDRESS...
|
|
}
|
|
~~~
|
|
|
|
* **ZONE** The zones *transfer* will answer zone transfer requests for. If left blank, the zones
|
|
are inherited from the enclosing server block. To answer zone transfers for a given zone,
|
|
there must be another plugin in the same server block that serves the same zone, and implements
|
|
`transfer.Transferer`.
|
|
|
|
* `to` **ADDRESS...** The hosts *transfer* will transfer to. Use `*` to permit transfers to all
|
|
addresses. Zone change notifications are sent to all **ADDRESS** that are an IP address or
|
|
an IP address and port e.g. `1.2.3.4`, `12:34::56`, `1.2.3.4:5300`, `[12:34::56]:5300`.
|
|
`to` may be specified multiple times.
|
|
|
|
You can use the _acl_ plugin to further restrict hosts permitted to receive a zone transfer.
|
|
See example below.
|
|
|
|
## Examples
|
|
|
|
Use in conjunction with the _acl_ plugin to restrict access to subnet 10.1.0.0/16.
|
|
|
|
```
|
|
...
|
|
acl {
|
|
allow type AXFR net 10.1.0.0/16
|
|
allow type IXFR net 10.1.0.0/16
|
|
block type AXFR net *
|
|
block type IXFR net *
|
|
}
|
|
transfer {
|
|
to *
|
|
}
|
|
...
|
|
```
|
|
|
|
Each plugin that can use _transfer_ includes an example of use in their respective documentation. |