环境：
haproxy 10.1.6.31
backend 10.1.6.13、10.1.6.16、10.1.6.159、10.1.6.228 (每个web都设置不同内容)
1 下载源码包
wget ‘http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.22.tar.gz’
tar zxvf haproxy-1.4.22.tar.gz
cd haproxy-1.4.22/
make TARGET=linux26
make install默认没有生成配置文件，在源码包的examples目录下有配置文件示例haproxy.cfg
3 设置运行环境
mkdir /etc/haproxy
cp examples/haproxy.cfg /etc/haproxy/
cp /usr/local/sbin/haproxy /sbin/4 设置init启动脚本
先修改/etc/default/haproxy
#/etc/default/haproxy
# Set ENABLED to 1 if you want the init script to start haproxy.
ENABLED=1
# Add extra flags here.
EXTRAOPTS="-de -m 16"PATH=/sbin:/usr/sbin:/bin:/usr/bin
PIDFILE=/var/run/haproxy.pid
CONFIG=/etc/haproxy/haproxy.cfg
HAPROXY=/sbin/haproxy
EXTRAOPTS=
ENABLED=0
test -x $HAPROXY || exit 0
test -f "$CONFIG" || exit 0
if [ -e /etc/default/haproxy ]; then
. /etc/default/haproxy
fi
test "$ENABLED" != "0" || exit 0
[ -f /etc/default/rcS ] && . /etc/default/rcS
. /lib/lsb/init-functions
haproxy_start()
{
start-stop-daemon --start --pidfile "$PIDFILE" \
--exec $HAPROXY -- -f "$CONFIG" -D -p "$PIDFILE" \
$EXTRAOPTS || return 2
return 0
}
haproxy_stop()
{
if [ ! -f $PIDFILE ] ; then
# This is a success according to LSB
return 0
fi
for pid in $(cat $PIDFILE) ; do
/bin/kill $pid || return 4
done
rm -f $PIDFILE
return 0
}
haproxy_reload()
{
$HAPROXY -f "$CONFIG" -p $PIDFILE -D $EXTRAOPTS -sf $(cat $PIDFILE) \
|| return 2
return 0
}
haproxy_status()
{
if [ ! -f $PIDFILE ] ; then
# program not running
return 3
fi
for pid in $(cat $PIDFILE) ; do
if ! ps --no-headers p "$pid" | grep haproxy > /dev/null ; then
# program running, bogus pidfile
return 1
fi
done
return 0
}
case "$1" in
start)
log_daemon_msg "Starting haproxy" "haproxy"
haproxy_start
ret=$?
case "$ret" in
0)
log_end_msg 0
;;
1)
log_end_msg 1
echo "pid file '$PIDFILE' found, haproxy not started."
;;
2)
log_end_msg 1
;;
esac
exit $ret
;;
stop)
log_daemon_msg "Stopping haproxy" "haproxy"
haproxy_stop
ret=$?
case "$ret" in
0|1)
log_end_msg 0
;;
2)
log_end_msg 1
;;
esac
exit $ret
;;
reload|force-reload)
log_daemon_msg "Reloading haproxy" "haproxy"
haproxy_reload
case "$?" in
0|1)
log_end_msg 0
;;
2)
log_end_msg 1
;;
esac
;;
restart)
log_daemon_msg "Restarting haproxy" "haproxy"
haproxy_stop
haproxy_start
case "$?" in
0)
log_end_msg 0
;;
1)
log_end_msg 1
;;
2)
log_end_msg 1
;;
esac
;;
status)
haproxy_status
ret=$?
case "$ret" in
0)
echo "haproxy is running."
;;
1)
echo "haproxy dead, but $PIDFILE exists."
;;
*)
echo "haproxy not running."
;;
esac
exit $ret
;;
*)
echo "Usage: /etc/init.d/haproxy {start|stop|reload|restart|status}"
exit 2
;;
esac
:
global
log 127.0.0.1 local0
maxconn 4096
uid 99
gid 99
daemon
nbproc 1
defaults
log global
mode http
option httplog
option dontlognull
option forwardfor
retries 3
option redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen web_test 0.0.0.0:80
option httpchk
balance roundrobin
server s_1 10.1.6.13:80 check inter 20000 rise 2 fall 5
server s_2 10.1.6.159:80 check inter 20000 rise 2 fall 5
server s_3 10.1.6.16:80 check inter 20000 rise 2 fall 5
server s_4 10.1.6.228:80 check inter 20000 rise 2 fall 5
/etc/init.d/haproxy start
http://cbonte.github.com/haproxy-dconv/configuration-1.4.html#option%20http-pretend-keepalive
