网站集群部署解决方案 一、???????方案目标 实现互动留言系统、后台发布系统的高可用性，有效解决高并发量对单台应用服务器的冲击，确保应用服务器单点故障不影响系统正常运行。 二、???????部署架构 采取Tomcat集群的部署方式，Apache通过proxy_module代理
网站集群部署解决方案
一、???????方案目标
实现互动留言系统、后台发布系统的高可用性，有效解决高并发量对单台应用服务器的冲击，确保应用服务器单点故障不影响系统正常运行。
二、???????部署架构
采取Tomcat集群的部署方式，Apache通过proxy_module代理方式对用户的请求进行负载均衡，转发至tomcat集群中的某一实例进行处理，tomcat集群之间通过Memcached高性能缓存集群共享持久Session。具体结构如下图：
三、???????完整解决方案
1、????????各服务器所需安装软件列表：
|
序号 |
角色 |
IP地址 |
所需软件 |
|
1 |
Apache生产服务器 |
10.10.19.1 |
Apache HTTP Server2.2*（ proxy_module、proxy_http_module\proxy_balancer_module\ proxy_ajp_module模块） |
|
2 |
Tomcat互动留言服务器NO.1 |
10.10.19.2 |
Tomcat 7.0.*，TOMCAT_HOMT/lib下的jar包： memcached-session-manager-x.y.z.jar， 下载地址 memcached-session-manager-tc7-x.y.z.jar， （或memcached-session-manager-tc6-x.y.z.jar） spymemcached-x.y.z.jar， 下载地址 kryo-1.04.jar、kryo-serializers-0.10.jar、asm-3.2.jar、minlog-1.2.jar、msm-kryo-serializer-1.6.3.jar、reflectasm-1.01.jar （kryo-serializer:? msm-kryo-serializer,? kryo-serializers-0.10?(0.10 is needed, as 0.20+ is for kryo2),? kryo,? minlog,? reflectasm,? asm-3.2） |
|
3 |
Tomcat互动留言服务器NO.1 |
10.10.19.3 |
同上 |
|
4 |
生产服务器NO.1 |
10.10.19.4 |
Apache HTTP Server 2.2*（预览站点时使用） 其他同上 |
|
5 |
生产服务器NO.2 |
10.10.19.5 |
除Apache HTTP Server 2.2*外，其他同上 |
|
6 |
Memcached缓存服务器NO.1 |
10.10.19.6 |
libevent-2.0.21-stable（安装memcached时需要）和memcached1.4.15 |
|
7 |
Memcached缓存服务器NO.2 |
10.10.19.7 |
同上 |
|
8 |
数据库服务器 |
10.10.18.3 |
SQL Server 2008 R2 |
2、????????安装步骤：
1）编译安装Apache2.2*，除网站必须使用的模块外，加入proxy_module、proxy_http_module\proxy_balancer_module\
proxy_ajp_module模块。按如下方式配置Apache对jsp页面的请求进行负载均衡：
l? 发布服务器：
LoadModule proxy_module modules/mod_proxy.so
?
LoadModule proxy_http_modulemodules/mod_proxy_http.so
?
LoadModule proxy_balancer_modulemodules/mod_proxy_balancer.so
?
LoadModuleproxy_ajp_module??modules/mod_proxy_ajp.so
???BalancerMember ajp://10.10.19.2:8009 route=jvm1
???BalancerMember ajp://10.10.19.3:8009 route=jvm2
ProxyPass/ balancer://cluster/ stickysession=JSESSIONID|jsessionid
l? 生产服务器NO.1：
LoadModule proxy_module modules/mod_proxy.so
?
LoadModule proxy_http_module modules/mod_proxy_http.so
?
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
?
LoadModule proxy_ajp_module??modules/mod_proxy_ajp.so
??? BalancerMember ajp://10.10.19.4:8009route=jvm3
??? BalancerMember ajp://10.10.19.5:8009route=jvm4
ProxyPass / balancer://cluster/ stickysession=JSESSIONID|jsessionid
2）编译安装Memcached
注意，安装Memcached需要首先安装libevent-2.0.21-stable
启动Memcached：
memcached -d -m 4096 -l localhost -p 11211-u root
给出memcached启动命令参数详解.
-d选项是启动一个守护进程，
-m是分配给Memcache使用的内存数量，单位是MB，我这里是10MB，
-u是运行Memcache的用户，我这里是root，
-l是监听的服务器IP地址，如果有多个地址的话，我这里指定了服务器的IP地址192.168.0.200，
-p是设置Memcache监听的端口，我这里设置了12000，最好是1024以上的端口，
-c选项是最大运行的并发连接数，默认是1024，我这里设置了256，按照你服务器的负载量来设定，
-P是设置保存Memcache的pid文件，我这里是保存在 /tmp/memcached.pid，
-p 使用的TCP端口。默认为11211
-m 最大内存大小。默认为64M
-vv 用very vrebose模式启动，调试信息和错误输出到控制台
-d 作为daemon在后台启动
3）安装Java环境和Tomcat7.*。
将下载完成的9个jar包放入 TOMCAT_HOME/lib文件夹下，并按如下修改Tomcat的配置文件TOMCAT_HOME/conf/context.xml：
l? Tomcat互动留言服务器NO.1：
???memcachedNodes="n1:10.10.19.6:11211,n2:10.10.19.7:11211" /*此前安装的两个Memcached服务器的IP地址，Memcached默认端口号为11211*/ ???failoverNodes="n1" ???requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" ???transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" ???/> l? Tomcat互动留言服务器NO.2： ???memcachedNodes="n1:10.10.19.6:11211,n2:19.7:11211" /*此前安装的两个Memcached服务器的IP地址，Memcached默认端口号为11211*/ ???failoverNodes="n2" ???requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" ???transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" ???/> l? 生产服务器NO.1： ???memcachedNodes="n1:10.10.19.6:11211,n2:19.7:11211" /*此前安装的两个Memcached服务器的IP地址，Memcached默认端口号为11211*/ ???failoverNodes="n1" ???requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" ???transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" ???/> l? 生产服务器NO.2： ???memcachedNodes="n1:10.10.19.6:11211,n2:19.7:11211" /*此前安装的两个Memcached服务器的IP地址，Memcached默认端口号为11211*/ ???failoverNodes="n2" ???requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" ???transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" ???/> ? 参考文章 1、???????? https://code.google.com/p/memcached-session-manager/wiki/SetupAndConfiguration 2、???????? http://www.bradchen.com/blog/2012/12/tomcat-auto-failover-using-apache-memcached 3、???????? http://blog.csdn.net/ichsonx/article/details/6911358 4、???????? http://www.linuxidc.com/Linux/2012-08/69312.htm ? ?
作者：xxfigo 发表于2013-5-21 17:01:06 原文链接
阅读：122 评论：0 查看评论
原文地址：Apache+Tomcat+Memcached共享Session的构架设计, 感谢原作者分享。
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