Các bước cài đặt haproxy

1 - Get latest (stable) HAProxy:
$ curl -O http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.21.tar.gz
$ tar xzpvf haproxy-1.4.21.tar.gz
$ cd haproxy-1.4.21 2 - Compile:
$ make TARGET=generic ARCH=x86_64 USE_PCRE=1 3 - Install:
$ make install DESTDIR='/usr/local/haproxy' PREFIX=''
After installing HAProxy get the following sample configuration and save it to a file named haproxy.cfg .

Run HAProxy with:
$ ~/opt/haproxy/sbin/haproxy -f haproxy.conf


Nguồn: http://blog.pedrocarrico.net/post/25226892944/setting-up-haproxy-in-your-development-environment 



Tạo file init.d để start|stop:


#!/bin/sh
#
# custom haproxy init.d script, by Mattias Geniar
#
# haproxy starting and stopping the haproxy load balancer
#
# chkconfig: 345 55 45
# description: haproxy is a TCP loadbalancer
# probe: true

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

[ -f /usr/local/sbin/haproxy ] || exit 0

[ -f /usr/local/haproxy/haproxy.cfg ] || exit 0

# Define our actions
checkconfig() {
# Check the config file for errors
/usr/local/sbin/haproxy -c -q -f /usr/local/haproxy/haproxy.cfg
if [ $? -ne 0 ]; then
echo "Errors found in configuration file."
return 1
fi

# We're OK!
return 0
}

start() {
# Check config
/usr/local/sbin/haproxy -c -q -f /usr/local/haproxy/haproxy.cfg
if [ $? -ne 0 ]; then
echo "Errors found in configuration file."
return 1
fi

echo -n "Starting HAProxy: "
daemon /usr/local/sbin/haproxy -D -f /usr/local/haproxy/haproxy.cfg -p /var/run/haproxy.pid

RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/haproxy
return $RETVAL
}

stop() {
echo -n "Shutting down HAProxy: "
killproc haproxy -USR1

RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/haproxy
[ $RETVAL -eq 0 ] && rm -f /var/run/haproxy.pid
return $RETVAL
}

restart() {
/usr/local/sbin/haproxy -c -q -f /usr/local/haproxy/haproxy.cfg
if [ $? -ne 0 ]; then
echo "Errors found in configuration file."
return 1
fi

stop
start
}

check() {
/usr/local/sbin/haproxy -c -q -V -f /usr/local/haproxy/haproxy.cfg
}

rhstatus() {
status haproxy
}

reload() {
/usr/local/sbin/haproxy -c -q -f /usr/local/haproxy/haproxy.cfg
if [ $? -ne 0 ]; then
echo "Errors found in configuration file."
return 1
fi

echo -n "Reloading HAProxy config: "
/usr/local/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf $(cat /var/run/haproxy.pid)

success $"Reloading HAProxy config: "
echo
}

# Possible parameters
case "$1" in
start)
start
;;
stop)
stop
;;
status)
rhstatus
;;
restart)
restart
;;
reload)
reload
;;
checkconfig)
check
;;
*)
echo "Usage: haproxy {start|stop|status|restart|reload|checkconfig}"
exit 1
esac

exit 0