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docs: more on imports and snippets (#2423)

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Add some docs in the manual page. Problem here is that it is only in the
manual page and we don't publish this particular one on coredns.io.

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben 2019-01-03 20:47:28 +01:00 • committed by Yong Tang
parent 7642995558
commit 5e4faf9bb5
1 changed files with 22 additions and 4 deletions
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26
corefile.5.md
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@ -23,7 +23,7 @@ The optional **SCHEME** defaults to `dns://`, but can also be `tls://` (DNS over
The optional **PORT** controls on which port the server will bind, this default to 53. If you use
a port number here, you *can't* override it with `-dns.port` (coredns(1)).
Specifying a **ZONE** *and* **PORT** combination multiple time for *different* servers will lead to
Specifying a **ZONE** *and* **PORT** combination multiple times for *different* servers will lead to
an error on startup.
When a query comes in, it is matched again all zones for all servers, the server with the longest
@ -39,16 +39,34 @@ Comments may be started anywhere on a line.
Environment variables are supported and either the Unix or Windows form may be used: `{$ENV_VAR_1}`
or `{%ENV_VAR_2%}`.
You can use the `import` "plugin" to include parts of other files, see <https://coredns.io/explugins/import>.
If CoreDNS can’t find a Corefile to load it loads the following builtin one:
~~~ Corefile
~~~ corefile
. {
whoami
}
~~~
## Import
You can use the `import` "plugin" to include parts of other files, see <https://coredns.io/explugins/import>.
This is enabled by default.
## Snippets
If you want to reuse a snippet you can define one with and then use it with *import*.
~~~ corefile {
(mysnippet) {
log
whoami
}
. {
import mysnippet
}
~~~
## Examples
The **ZONE** is root zone `.`, the **PLUGIN** is chaos. The chaos plugin takes an argument: