On 2010-09-28 10:51, Hamnedalen, Mikael wrote:
Hi.

Anyone used HAProxy to load balance DNS requests ?

It can't work. HAProxy is a http load balancer with tcp support, DNS is mainly UDP based with TCP fallback.

I tried

# DNS

frontend dns_front

bind 10.216.208.20:53

default_backend dns_serv

backend dns_serv

server dns1 192.176.113.155:53 check

server dns2 192.176.113.156:53 check

# DNS END

But it didn’t work. Any ideas, or any hints for any other product ?

LVS + Keepalived. Works like a charm. I have two 2 (active/backup) and 4 realservers handling up to 1000 DNS req/sec.

Best regards,

                        Krzysztof Olędzki

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