负载均衡基于Cookie OpenRest+tomcat+php+memcache+Jsp

一.OpenResty简介

OpenResty是一个基于 Nginx 与 Lua 的高性能 Web 平台，其内部集成了大量精良的 Lua 库、第三方模块以及大多数的依赖项。用于方便地搭建能够处理超高并发、扩展性极高的动态 Web 应用、Web 服务和动态网关。

OpenResty通过汇聚各种设计精良的 Nginx 模块（主要由 OpenResty 团队自主开发），从而将 Nginx 有效地变成一个强大的通用 Web 应用平台。这样，Web 开发人员和系统工程师可以使用 Lua 脚本语言调动 Nginx 支持的各种 C 以及 Lua 模块，快速构造出足以胜任 10K 乃至 1000K 以上单机并发连接的高性能 Web 应用系统。

OpenResty的目标是让你的Web服务直接跑在 Nginx 服务内部，充分利用 Nginx 的非阻塞 I/O 模型，不仅仅对 HTTP 客户端请求,甚至于对远程后端诸如 MySQL、PostgreSQL、Memcached 以及 Redis 等都进行一致的高性能响应。

二.OpenResty的安装配置

1.配置 编译 安装

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2.配置openresty

启动memcache服务

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检查语法，启动nginx

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启动fastcgi服务

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配置openresty的nginx

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添加内核最大链接数

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配置php默认发布文件

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显示正常

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3.在nginx上添加memcache

vim nginx.conf

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4.测试example.php缓存文件memcache

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每秒处理量为6787次

5.将memcache缓存读取取消测试

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访问index.php页面，此页面不能进行mencache缓存

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每秒处理量为3360次

三.Tomcat的安装配置，jsp页面的访问

1.添加系统环境变量

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2.安装Java

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3.安装tomcat

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4.写一段java的测试代码

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5.启动tomcat服务

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6.客户机测试8080端口的tomcat

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7.修改jsp测试访问页面

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四.设置Tomcat居于cookie的负载均衡

1.将server2与server3配置相同的tomcat服务

   将server2的jdk传给server3

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2.在server3配置环境变量，两边服务开通

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3.配置测试jsp访问页面

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将页面传给server3

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4.重新安装支持sticky的nginx版本，由于openresty不支持sticky

停止原先的nginx服务

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安装nginx1.1版本，安装到/opt目录下

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配置主配置文件，注意sticky

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5.客户机测试，输入172.25.29.1/test.jsp

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取消sticky，server3  上的tomcat出现问题，server2 上的tomcat接管，但当前会话结束

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五.处理Tomcat负载均衡sticky会话结束

1.在server2和server3上安装memcache-session包

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2.sevrer2上安装memcache，设置n1，并启动服务

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3.sevrer3上安装memcache，设置n2，并启动服务

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4.客户机测试

650) this.width=650;" src="https://s3.51cto.com/wyfs02/M01/07/92/wKiom1nLpR2zFlY7AAB7iBHqg08359.png" style="float:none;" title="Screenshot from 2017-09-27 16-11-06.png" alt="wKiom1nLpR2zFlY7AAB7iBHqg08359.png" />

当会话正在进行时，server3 tomcat停掉

650) this.width=650;" src="https://s3.51cto.com/wyfs02/M01/07/92/wKiom1nLpR2gvNviAABZuqRTTTE528.png" style="float:none;" title="Screenshot from 2017-09-27 16-11-14.png" alt="wKiom1nLpR2gvNviAABZuqRTTTE528.png" />

server2 tomcat接管，但读取的memcache还是在原先的n1上，会话没有中断

650) this.width=650;" src="https://s3.51cto.com/wyfs02/M01/A6/44/wKioL1nLpN6DZSeNAAB-uJWTNOU170.png" style="float:none;" title="Screenshot from 2017-09-27 16-11-24.png" alt="wKioL1nLpN6DZSeNAAB-uJWTNOU170.png" />

负载均衡基于Cookie OpenRest+tomcat+php+memcache+Jsp

原文地址：http://anfishr.blog.51cto.com/8534000/1969266