Bind9 weighted load balancing

[Alperen Yılmaz]

Hello everyone,

There is a round robin resolving mechanism in bind9 where the server
chooses different records to resolve for each request, but is there a way
to assign weights so that the server resolves with different probabilities?

All I could find about the topic was this old mail from the archive:
https://lists.isc.org/pipermail/bind-users/2007-April/066194.html
It says you can put duplicate records for increasing the weight, however it
also says that bind9 does not seem to support this.

host IN A 1.2.3.4
IN A 1.2.3.4
IN A 1.2.3.4
IN A 1.2.3.5


Thank you,
Alperen Yılmaz

[Kevin Darcy via bind-users]

[ Classification Level: GENERAL BUSINESS ]

Duplicate RRs are suppressed, as per the standards.

RFC 2181, Section 5:

Each DNS Resource Record (RR) has a label, class, type, and data. It
is meaningless for two records to ever have label, class, type and
data all equal - servers should suppress such duplicates if
encountered


That being said, a DNS-based load-balancer can probably do what you're
looking for.

- Kevin

Post by Alperen Yılmaz
Hello everyone,
There is a round robin resolving mechanism in bind9 where the server
chooses different records to resolve for each request, but is there a way
to assign weights so that the server resolves with different probabilities?
https://lists.isc.org/pipermail/bind-users/2007-April/066194.html
It says you can put duplicate records for increasing the weight, however
it also says that bind9 does not seem to support this.
host IN A 1.2.3.4
IN A 1.2.3.4
IN A 1.2.3.4
IN A 1.2.3.5
Thank you,
Alperen Yılmaz
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