Haproxy usage Summary

Http://blog.csdn.net/mahongming/article/details/6048947

Introduction

Haproxy is a proxy software that provides high availability, Server Load balancer, and TCP and HTTP applications, haproxy is a completely free proxy solution that provides TCP and HTTP applications quickly and reliably with haproxy. Haproxy is applicable to websites with large loads. These sites usually need session persistence or layer-7 processing. Haproxy supports tens of thousands of concurrent connections, and the haproxy running mode enables it to be easily and securely integrated into the architecture, while protecting Web servers from being exposed to the network.

 

 

 

Installation and Management

Installation Software selection instructions

 

Software	Version
Haproxy	1.4.9

 

1) The installation steps are as follows: Upload the software to the/OPT folder.

 

CD/OPT Tar zxvf haproxy-1.4.9.tar.gz CD haproxy-1.4.9 Make target = linux26 prefix =/OPT Make install prefix =/OPT

 

2) haproxy Management

If haproxy has been configured, start

 

CD/opt/haproxy/sbin ./Haproxy-F haproxy. cfg

 

Enter the user name and password, and monitor the status on the following page.

 

Http://x.x.x.x: 1080/haproxy-Stats

 

Add the haproxy startup command to the/etc/rc. Local file, as shown in figure

 

/Opt/haproxy/sbin/haproxy-F haproxy. cfg

 

 

 

Configuration Optimization

1) haproxy configuration optimization instructions

 

Parameter configuration example	Rule Description
Maxconn 32768	Max connections
Daemon	We recommend that you start the instance in daemon mode.
Nbproc 8	Number of concurrent processes of Server Load balancer
Retries 3	Number of Retries

 

 

 

2) haproxy configuration (haproxy. cfg) Example

Create a configuration file

 

CD/opt/haproxy Touch haproxy. cfg

 

Configuration example

 

Global Log 127.0.0.1 local0 Maxconn 4096 Chroot/opt/haproxy # Uid WWW # GID WWW UID 0 GID 0   Daemon Nbproc 2 Pidfile logs/haproxy. PID # Debug # Quiet Ults Log 127.0.0.1 local3 Mode HTTP Option httplog Option httpclose Option dontlognull Option forwardfor Option redispatch Retries 2 Maxconn 2000 Balance roundrobin Stats enable Stats uri/haproxy-Stats Contimeout 5000 Clitimeout 50000 Srvtimeout 50000   Listen web_proxy 0.0.0.0: 1080 Option httpchk get/ping. jsp Server S1 192.168.15.110: 8080 weight 3 check Server S3 192.168.15.111: 8080 weight 3 check Listen mysql_proxy 0.0.0.0: 3306 Server S1 192.168.15.110: 3306 weight 3 check Server S3 192.168.15.111: 3306 weight 3 check