I want to create a configuration such that the heartbeat between haproxy and the backend is based on HTTP POST.
Does anyone have any idea about this? I have tried the below configuration, but it only sent the http HEAD to the backend server (I want HTTP POST):
backend mlp
mode http
balance roundrobin
server mlp1 192.168.12.165:9210 check
server mlp2 192.168.12.166:9210 check
Thanks for your help.
@Mohsin, Thank you so much. I indeed work. But I want to specify the request message, seems my configure doesn't work. I appreciate that if you can help too.
[root@LB_vAPP_1 tmp]# more /var/www/index.txt
POST / HTTP/1.1\r\nHost: 176.16.0.8:2234\r\nContent-Length: 653\r\n\r\n<?xml version=\"1.0\" encoding=\"gb2312\"?>\r\n<svc_init ver=\"3.2.0\">\r\n<hdr ver=\"3.2.0\">\r\n<client>\r\n<id>915948</id>\r\n<pwd>915948</pwd>\r\n<serviceid></serviceid>\r\n</client>\r\n<requestor><id>13969041845</id></requestor>\r\n</hdr>\r\n<slir ver=\"3.2.0\" res_type=\"SYNC\">\r\n<msids><msid enc=\"ASC\" type=\"MSISDN\">00000000000</msid></msids>\r\n<eqop>\r\n<resp_req type=\"LOW_DELAY\"/>\r\n<hor_acc>200</hor_acc>\r\n</eqop>\r\n<geo_info>\r\n<CoordinateReferenceSystem>\r\n<Identifier
>\r\n<code>4326</code>\r\n<codeSpace>EPSG</codeSpace>\r\n<edition>6.1</edition>\r\n</Identifier\r\n</CoordinateReferenceSystem>\r\n</geo_info>\r\n<loc_type type=\"CURRENT_OR_LAST\"/>\r\n<prio type=\"HIGH\"/>\r\n</slir>\r\n</svc_init>\r\n\r\n\r\n\r\nmy haproxy.conf file is as bellowing:
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
#
# 1) configure syslog to accept network log events. This is done
# by adding the '-r' option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
#
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
#
log 127.0.0.1 local7
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
ulimit-n 65536
daemon
nbproc 1
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
defaults
mode tcp
retries 3
log global
option redispatch
# option abortonclose
retries 3
timeout queue 28s
timeout connect 28s
timeout client 28s
timeout server 28s
timeout check 1s
maxconn 32000
#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
frontend mlp
mode tcp
option persist
# bind 10.68.97.42:9211 ssl crt /etc/ssl/server.pem
#bind 10.68.97.42:9211
bind 10.68.97.42:9210
default_backend mlp
frontend supl
mode tcp
option persist
bind 10.68.97.42:7275
default_backend supl
#-------------
# option1 http check
#------------
backend mlp
mode http
balance roundrobin
option httpchk POST / HTTP/1.1\r\nHost: 176.16.0.8:2234\r\nContent-Length: 653\r\n\r\n{<?xml version=\"1.0\" encoding=\"gb2312\"?>\r\n<svc_init ver=\"3.2.0\">\r\n<hdr ver=\"3.2.0\">\r\n<client>\r\n<id>915948</id>\r\n<pwd>915948</pwd>\r\n<serviceid></serviceid>\r\n</client>\r\n<requestor><id>13969041845</id></requestor>\r\n</hdr>\r\n<slir ver=\"3.2.0\" res_type=\"SYNC\">\r\n<msids><msid enc=\"ASC\" type=\"MSISDN\">00000000000</msid></msids>\r\n<eqop>\r\n<resp_req type=\"LOW_DELAY\"/>\r\n<hor_acc>200</hor_acc>\r\n</eqop>\r\n<geo_info>\r\n<CoordinateReferenceSystem>\r\n<Identifier>\r\n<code>4326</code>\r\n<codeSpace>EPSG</codeSpace>\r\n<edition>6.1</edition>\r\n</Identifier>\r\n</CoordinateReferenceSystem>\r\n</geo_info>\r\n<loc_type type=\"CURRENT_OR_LAST\"/>\r\n<prio type=\"HIGH\"/>\r\n</slir>\r\n</svc_init>\r\n\r\n\r\n\r\n}
http-check expect rstring <result resid=\"4\">UNKNOWN SUBSCRIBER</result>
server mlp1 192.168.12.165:9210 check
server mlp2 192.168.12.166:9210 check
#server mlp2 192.168.12.166:9210 check
backend supl
mode tcp
source 0.0.0.0 usesrc clientip
balance roundrobin
server supl1 192.168.12.165:7275 check
server supl2 192.168.12.166:7275 check
#server supl2 192.168.12.166:7275 checkOpen haproxy/conf/haproxy.conf file. Goto end of the page, you will see that there is a line 'option httpchk GET /', change GET to POST and you are done.
Let me know if you face any problem.