Hi Vivek,
You can do this I think with the first scheduler so the option "balance
first" :
This is what haproxy doc says:
first The first server with available connection slots receives
the
connection. The servers are chosen from the lowest numeric
identifier to the highest (see server parameter "id"),
which
defaults to the server's position in the farm. Once a
server
reaches its maxconn value, the next server is used. It
does
not make sense to use this algorithm without setting
maxconn.
The purpose of this algorithm is to always use the
smallest
number of servers so that extra servers can be powered off
during non-intensive hours. This algorithm ignores the
server
weight, and brings more benefit to long session such as
RDP
or IMAP than HTTP, though it can be useful there too. In
order to use this algorithm efficiently, it is recommended
that a cloud controller regularly checks server usage to
turn
them off when unused, and regularly checks backend queue
to
turn new servers on when the queue inflates.
Alternatively,
using "http-check send-state" may inform servers on the
load.
Otherwise you may be able to do something based on session rate with ACL's,
I used this config once previously :
frontend TestVIP 192.168.0.236:80 <http://192.168.0.236/> transparent
mode http
maxconn 40000
option accept-invalid-http-request
acl max_conn_reached srv_sess_rate(prod/ProdRIP) gt 10
acl prod_dead nbsrv(prod) lt 1
acl whitelist hdr_sub(Cookie) -i SERVERID
default_backend prod
use_backend prod if whitelist
use_backend fallback if max_conn_reached OR prod_dead
backend prod
mode http
balance leastconn
option abortonclose
option forwardfor
option accept-invalid-http-response
option http-keep-alive
cookie SERVERID insert nocache indirect
server ProdRIP 192.168.0.245 weight 100 cookie ProdRIP check port 80
inter 4000 rise 2 fall 2 minconn 0 maxconn 0
backend fallback
mode http
balance leastconn
option abortonclose
option forwardfor
option accept-invalid-http-response
option http-keep-alive
server FallbackRIP 192.168.0.246 weight 100 minconn 0 maxconn 0
Regards
Aaron West
Loadbalancer.org Limited
+44 (0)330 380 1064
www.loadbalancer.org
On 18 August 2015 at 13:06, vivek pal <mr.vivek...@gmail.com> wrote:
>
> Hi,
>
> We have configured haproxy with balance roundrobin, added 2 web server
> web1,web2 and map website.domain.com with haproxy ip when we hit
> website.domain.com into browser it's working, request is transferring
> both server. We want to set first 100 hit sent to web1 and rest web2. is it
> possible?
>
> Regards,
>
> Vivek Pal.
>
>
