On 2010-09-28 14:47, Guillaume Bourque wrote:
Hi Krzysztof
Hi Guillaume,
Can you tell us which product you are using to answer dns request to
achieve a 1000 req / sec.
1k rps is rather small load so I use isc-bind.
Like I said - I have 4 servers, so each needs to handle only ~250 or
~340 requests/sec max. ~340 in a situation when one server is down due
to mainanatce or malfunction. Most of the queries are recursive.
This is not very much comparing to ISC benchmark (93k rps [1]) but my
servers are noticeably slower (older) and also need to handle additional
load (NTP, WINS, etc). Hopefully simple benchmarks (queryperf for
example) show that with 1kqps I'm still far enough from the limit. ;)
[1] ftp://ftp.isc.org/isc/dns_perf/ISC-TN-2008-1.pdf
Krzysztof Olędzki a écrit :
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
