负载均衡工具haproxy安装，配置，使用

一，什么是haproxy

HAProxy提供高可用性、负载均衡以及基于TCP和HTTP应用的代 理，支持虚拟主机

，它是免费、快速并且可靠的一种解决方案。HAProxy特别适用于那些负载特大的web站点，这些站点通常又需要会话保持或七层处理。 HAProxy运行在当前的硬件上，完全可以支持数以万计的并发连接。并且它的运行模式使得它可以很简单安全的整合进您当前的架构中， 同时可以保护你的web服务器不被暴露到网络上。

二，安装haproxy

下载列表地址http://haproxy.1wt.eu

wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.8.tar.gz

tar zxvf haproxy-1.4.8.tar.gz
cd haproxy-1.4.8
uname -a           //查看linux内核版本
make TARGET=linux26 PREFIX=/usr/local/haproxy
make install PREFIX=/usr/local/haproxy

三，配置haproxy

vi /usr/local/haproxy/haproxy.cfg

global                                                                                                                                                                 
  log 127.0.0.1 daemon debug
  maxconn 5120
  chroot /home/denghaiping/document/search/solr/haproxy-1.3.14.2

uid 99
#  user haproxy
gid 99
#  group ha-group
  daemon
#  quiet
#  nbproc   2   # number of processes
  pidfile /home/sgcc/demo/haproxy-1.3.14.2/haproxy.pid


defaults
#  log     global
  log 127.0.0.1 local3
  mode http
  option   httplog
  option   dontlognull
  option redispatch
  log 127.0.0.1 local3
  retries 3 

  maxconn 2000
  contimeout    5000
  clitimeout    50000
  srvtimeout    50000


listen yoyoseg_proxy 
  bind :10001
  mode tcp 

# status monitor
#stats uri /haproxy-stats
#  stats realm Haproxy\ statistics
#  stats auth yoyo:yoyocc8ha
   
  balance roundrobin

# insert: to create a new cookie and assign the server identifier to it
# indirect: remove the cookie for direct accesses
# nocache: ensure that no upstream cache will store it
#  cookie SERVERID insert indirect nocache

#  cookie PHPSESSID prefix
#  appsession PHPSESSID len 32 timeout 86400000
  
# force connection:close, thus disabling HTTP keep-alive  
#  option httpclose
  
# if the application needs to log the original client’s IP, 
# use the 'forwardfor' option which will add an 'X-Forwarded-For'
# header with the original client's IP address.
#  option forwardfor  
# health checking
#option httpchk HEAD /check.txt HTTP/1.0

  # inter:    interval between health checking in milliseconds
  # fall:     the number of failures supported before declaring that the server has fallen down
  # rise:     the number of valid checks needed for the server to fully get up

  server seg_server_1 localhost:10002
  server seg_server_1 localhost:10003 
  server seg_server_1 localhost:10004 
  server seg_server_1 localhost:10005
  server seg_server_1 localhost:10006

#  server app_server_2 59.57.14.176:8008 cookie yoyo_app_2 check inter 2000 rise 2 fall 5
#server app_bbs2 192.168.169.118:80 cookie app1inst2 check inter 2000 rise 2 fall 5                                                                                 
                                                                                        

 

三，启动haproxy

#启动haproxy
/usr/local/haproxy/haproxy -f /usr/local/haproxy/haproxy.cfg

#查看是否启动
[zhangy@BlackGhost haproxy]$ ps -e|grep haproxy
4859 ?        00:00:00 haproxy
4860 ?        00:00:00 haproxy

四，压力测试

[root@BlackGhost haproxy]# /usr/local/bin/webbench -c 100 -t 30 http://localhost:1080/phpinfo.php
Webbench – Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://localhost:1080/phpinfo.php
100 clients, running 30 sec.

Speed=26508 pages/min, 20929384 bytes/sec.
Requests: 13254 susceed, 0 failed.

说明：haproxy监听的端口是1080，代理192.168.18.2:10000，127.0.0.1:10000

统计监听的是8888端口 http://localhost:8888/haproxy-stats

haproxy负载均衡

配置说明：

1.4系列参考配置文件

http://haproxy.1wt.eu/download/1.4/doc/configuration.txt

1.3系列参考配置文件

http://haproxy.1wt.eu/download/1.3/doc/configuration.txt