README
¶
oneaddr
Name
oneaddr - filters response and retains only one (first) address
Description
oneaddr will remove all addresses from response except first one. It is intended to be used with loadbalance plugin.
Syntax
oneaddr
Examples
Let's consider following configuration for example.org zone. We aim to enable round-robin loadbalancing, but ensure fair distribution and reveal just one worker server in the DNS response.
Zone file db.example.org:
$ORIGIN example.org.
@ 3600 IN SOA sns.dns.icann.org. noc.dns.icann.org. 2017042745 7200 3600 1209600 3600
3600 IN NS a.iana-servers.net.
3600 IN NS b.iana-servers.net.
www IN A 127.0.0.1
www IN A 127.0.0.2
www IN A 127.0.0.3
www IN A 127.0.0.4
www IN A 127.0.0.5
www IN A 127.0.0.6
www IN A 127.0.0.7
www IN A 127.0.0.8
www IN A 127.0.0.9
www IN A 127.0.0.10
CoreDNS configuration:
example.org {
file db.example.org
loadbalance
oneaddr
}
With such configuration only one A-record will be present in the DNS response. Since loadbalance module randomizes order and oneaddr picks first address, IP address in the responses will vary and distribute load across worker servers.
Documentation
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Overview ¶
Package oneaddr is a plugin for rewriting responses to retain only single address
Package oneaddr is a plugin for rewriting responses to retain only single address
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type OneAddr ¶
OneAddr is a plugin to rewrite responses to retain only first address in the response.
type OneAddrResponseWriter ¶
type OneAddrResponseWriter struct {
dns.ResponseWriter
}
OneAddrResponseWriter is a response writer that shuffles A, AAAA and MX records.
Source Files