CentOS 6.3 The Haproxy and Apache configuration process

A. What is Haproxy

Haproxy provides high availability, load balancing, and proxies based on TCP and HTTP applications to support virtual hosts, a free, fast, and reliable solution. Haproxy is especially useful for Web sites that are heavily loaded, which typically require session maintenance or seven-tier processing. Haproxy is running on the current hardware and can support tens of thousands of concurrent connections altogether. and its operating mode makes it easy and secure to integrate into your current architecture while protecting your Web server from being exposed to the network.

Two. Install Haproxy

System Environment: centos6.3

apache:httpd-2.4.4

haproxy:haproxy-1.4.8

Haproxy server:192.168.7.198

Apache client1:192.168.7.196

Apache client2:192.168.7.197

Close Iptables and SELinux

# Service Iptables Stop

# Setenforce 0

# Vi/etc/sysconfig/selinux

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Selinux=disabled

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# 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//view Linux kernel version

# Make Target=linux26 Prefix=/usr/local/haproxy

# Make Install Prefix=/usr/local/haproxy

# useradd-s/sbin/nologin Haproxy

# passwd Haproxy

# Chown-r Haproxy.haproxy/usr/local/haproxy

Three. Configure Haproxy

# vi/usr/local/haproxy/haproxy.cfg

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Global

Maxconn 5120

Chroot/usr/local/haproxy

User Haproxy

Group Haproxy

Daemon

Quiet

Nbproc 2

Pidfile/usr/local/haproxy/haproxy.pid

Defaults

Log Global

Mode http

Option Httplog

Option Dontlognull

Log 127.0.0.1 Local3

Retries 3

Option Redispatch

Maxconn 2000

Contimeout 5000

Clitimeout 50000

Srvtimeout 50000

Listen web:80

Mode http

Balance Roundrobin

Option Httpclose

Option Forwardfor

Server client1 192.168.7.196:80 Check weight 1 minconn 1 Maxconn 3 check Inter 40000

Server Client2 192.168.7.197:80 Check weight 1 minconn 1 Maxconn 3 check Inter 40000

Listen stats:8888

Mode http

Transparent

Stats Uri/haproxy-stats

Stats Realm haproxy \ Statistic

#认证

Stats Auth Haproxy:password

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