Build a Web cluster using Haproxy

Load balancing common scheduling algorithm:

RR (Round Robin). The RR algorithm is the simplest and most commonly used algorithm, that is, polling scheduling.

LC (Least Connections). The LC algorithm, the minimum connection number algorithm, dynamically allocates the previous request based on the size of the node connections in the backend.

SH (Source Hashing). SH is based on the source access scheduling algorithm, this algorithm has some session sessions recorded on the server side of the scene, can be based on the source of Ip,cookie and other cluster scheduling

Case Environment:

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1. Compile and install nginx

1) Install software support , Nginx the configuration and operation needs Pcre , zlib and other packages to provide the appropriate library and header files.

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2) Create a run user, group

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3 ) Compile and install Nginx , enable Http_stub_status_module module to support status statistics , easy to view the server's link information

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4) Main program Nginx Create a linked file , for administrators to execute directly Nginx command, you can call Nginx the main program

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2.Nginx the Operation control

1) Check the configuration file

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2) Start, Stop Nginx , if the server is already installed http wait service, should be deactivated to avoid conflicts

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Restart Nginx , Web testing

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two . Use Haproxy Build Web Cluster

Nginx2 Configuration Ibid .

1. Compile and install Haproxy

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2.Haproxy Service Configuration

1) Establish Haproxy the configuration file

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3) Create a self-launching script

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4) Test Web Cluster

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This article from "Day Up" blog, please be sure to keep this source http://label.blog.51cto.com/10650689/1692333

Build a Web cluster using Haproxy