82 lines
1.7 KiB
Groff
82 lines
1.7 KiB
Groff
.\" Generated by Mmark Markdown Processer - mmark.miek.nl
|
|
.TH "COREDNS-WHOAMI" 7 "March 2021" "CoreDNS" "CoreDNS Plugins"
|
|
|
|
.SH "NAME"
|
|
.PP
|
|
\fIwhoami\fP - returns your resolver's local IP address, port and transport.
|
|
|
|
.SH "DESCRIPTION"
|
|
.PP
|
|
The \fIwhoami\fP plugin is not really that useful, but can be used for having a simple (fast) endpoint
|
|
to test clients against. When \fIwhoami\fP returns a response it will have your client's IP address in
|
|
the additional section as either an A or AAAA record.
|
|
|
|
.PP
|
|
The reply always has an empty answer section. The port and transport are included in the additional
|
|
section as a SRV record, transport can be "tcp" or "udp".
|
|
|
|
.PP
|
|
.RS
|
|
|
|
.nf
|
|
\&.\_<transport>.qname. 0 IN SRV 0 0 <port> .
|
|
|
|
.fi
|
|
.RE
|
|
|
|
.PP
|
|
The \fIwhoami\fP plugin will respond to every A or AAAA query, regardless of the query name.
|
|
|
|
.PP
|
|
If CoreDNS can't find a Corefile on startup this is the \fIdefault\fP plugin that gets loaded. As such
|
|
it can be used to check that CoreDNS is responding to queries. Other than that this plugin is of
|
|
limited use in production.
|
|
|
|
.SH "SYNTAX"
|
|
.PP
|
|
.RS
|
|
|
|
.nf
|
|
whoami
|
|
|
|
.fi
|
|
.RE
|
|
|
|
.SH "EXAMPLES"
|
|
.PP
|
|
Start a server on the default port and load the \fIwhoami\fP plugin.
|
|
|
|
.PP
|
|
.RS
|
|
|
|
.nf
|
|
example.org {
|
|
whoami
|
|
}
|
|
|
|
.fi
|
|
.RE
|
|
|
|
.PP
|
|
When queried for "example.org A", CoreDNS will respond with:
|
|
|
|
.PP
|
|
.RS
|
|
|
|
.nf
|
|
;; QUESTION SECTION:
|
|
;example.org. IN A
|
|
|
|
;; ADDITIONAL SECTION:
|
|
example.org. 0 IN A 10.240.0.1
|
|
\_udp.example.org. 0 IN SRV 0 0 40212
|
|
|
|
.fi
|
|
.RE
|
|
|
|
.SH "SEE ALSO"
|
|
.PP
|
|
Read the blog post
|
|
\[la]https://coredns.io/2017/03/01/how-to-add-plugins-to-coredns/\[ra] on how this plugin is built, or explore the source code
|
|
\[la]https://github.com/coredns/coredns/blob/master/plugin/whoami/\[ra].
|
|
|