[root@node2 ~]# yum -y install haproxy 安裝haproxy
[root@node2 ~]# vim /etc/haproxy/haproxy.cfg
#
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
mode http 指定haproxy工作模式為http
log global
option httplog
option dontlognull
option http-server-close 當客戶端超時時，允許服務端斷開連接
option forwardfor except 127.0.0.0/8 在http的響應頭部加入forwardfor
option redispatch #在使用了基于cookie的會話保持的時候，通常加這么一項，一旦后端某一server宕機時，能夠將其會話重新派發(fā)到其它的upstream servers
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
frontend main *:80 前端代理
acl url_static path_beg -i /static /images /javascript /stylesheets
acl url_static path_end -i .jpg .gif .png .css .js
acl url_dynamic path_end -i .php
use_backend static if url_static
default_backend dynamic
#---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such
#---------------------------------------------------------------------
backend static 后端的靜態(tài)請求響應
balance roundrobin
server static 192.168.1.100:80 inter 3000 rise 2 fall 3 check maxconn 5000
#---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend dynamic 后端的動態(tài)請求響應
balance roundrobin
server dynamic1 192.168.1.101:80 inter 3000 rise 2 fall 3 check maxconn 5000
server dynamic2 192.168.1.102:80 inter 3000 rise 2 fall 3 check maxconn 5000
listen statistics
mode http
bind *:8080
~ stats enable
stats auth admin:admin
stats uri /admin?stats 指定URI的訪問路徑
stats admin if TRUE
stats hide-version
stats refresh 5s
acl allow src 192.168.0.0/24 定義訪問控制列表
tcp-request content accept if allow
tcp-request content reject
