HAproxy负载均衡WEB
26.211和26.212安装apache web服务这里省略
yum install -y httpd
分部26.211和26.212上创建两个web页面
在192.16.26.210上安装HAproxy:1.5.4
Yum install –y haproxy
编辑HAproxy配置文件：
vim /etc/haproxy/haproxy.cfg
配置文件内容如下：
#---------------------------------------------------------------------
# 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 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
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
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 *:5000
# acl url_static path_beg -i /static /images /javascript /stylesheets
# acl url_static path_end -i .jpg .gif .png .css .js
#
# use_backend static if url_static
# default_backend app
#
##---------------------------------------------------------------------
## static backend for serving up images, stylesheets and such
##---------------------------------------------------------------------
#backend static
# balance roundrobin
# server static 127.0.0.1:4331 check
#
##---------------------------------------------------------------------
## round robin balancing between the various backends
##---------------------------------------------------------------------
#backend app
# balance roundrobin
# server app1 127.0.0.1:5001 check
# server app2 127.0.0.1:5002 check
# server app3 127.0.0.1:5003 check
# server app4 127.0.0.1:5004 check
frontend websrv *:80
default_backend webservers
backend webservers
balance roundrobin
server node2 192.168.26.211:80 check
server node3 192.168.26.212:80 check
保存退出：
启动HAproxy服务。
service haproxy start
在192.168.26.210上执行：ss –tnlp #查看HAproxy是否监听80端口
打开浏览器：不断刷新访问192.168.26.210观察结果
本文出自 “在路上” 博客，请务必保留此出处http://jdonghong.blog.51cto.com/3473478/1883368
原文地址：http://jdonghong.blog.51cto.com/3473478/1883368
