apache2.2.x+tomcat7.0.x集群+session复制

apache http server下载地址

http://httpd.apache.org/download.cgi#apache22

这里下载的是httpd-2.2.21-win32-x86-openssl-0.9.8r.msi

tomcat下载地址

http://tomcat.apache.org/download-70.cgi

这里下载的是http://apache.etoak.com/tomcat/tomcat-7/v7.0.23/bin/apache-tomcat-7.0.23.zip

jk下载地址

http://labs.renren.com/apache-mirror//tomcat/tomcat-connectors/jk/binaries/windows/

这里下载的是tomcat-connectors-1.2.32-windows-i386-httpd-2.2.x.zip

首先安装apache

然后解压缩tomcat，并将tomcat复制出两份

解压缩jk

将mod_jk.so文件复制到apache/modules文件夹

修改apache/conf/httpd.conf文件

在当前文件最后写入

include conf/mod_jk.conf

在apache/conf目录中，建立mod_jk.conf文件，文件内容如下

#加载mod_jk Module

LoadModule jk_module modules/mod_jk.so

#指定 workers.properties文件路径

JkWorkersFile conf/workers.properties

#指定那些请求交给tomcat处理,"controller"为在workers.propertise里指定的负载分配控制器

JkMount /**.do controller

JkMount /**.html controller

JkMount /* controller

在apache/conf目录中，建立workers.properties文件，内容如下

worker.list = controller,tomcat1,tomcat2 #server 列表

#========tomcat1========

worker.tomcat1.port=18009 #ajp13 端口号，在tomcat下server.xml配置,默认8009

worker.tomcat1.host=localhost #tomcat的主机地址，如果不是本机，请填写ip地址

worker.tomcat1.type=ajp13

worker.tomcat1.lbfactor = 1 #server的加权比重，值越高，分得的请求越多

#========tomcat2========

worker.tomcat2.port=28009 #ajp13 端口号，在tomcat下server.xml配置,默认8009

worker.tomcat2.host=localhost #tomcat的主机地址，如果不是本机，请填写ip地址

worker.tomcat2.type=ajp13

worker.tomcat2.lbfactor = 1 #server的加权比重，值越高，分得的请求越多

#========controller,负载均衡控制器========

worker.controller.type=lb

worker.controller.balanced_workers=tomcat1,tomcat2 #指定分担请求的tomcat

worker.controller.sticky_session=1

修改第一个tomcat/conf/server.xml

将

<Server port="8005" shutdown

改为

<Server port="18005"

将

<Connector port="8080" protocol="HTTP/1.1"

改为

<Connector port="18080"

将

<Connector port="8009" protocol="AJP/1.3"

改为

<Connector port="18009"

将

<Engine name="Catalina" defaultHost="localhost"

增加jvmRoute

<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1"

在<Engine name="Catalina"这个标签的下面添加

<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"

channelSendOptions="8">

<Manager className="org.apache.catalina.ha.session.DeltaManager"

expireSessionsOnShutdown="false"

notifyListenersOnReplication="true"/>

<Channel className="org.apache.catalina.tribes.group.GroupChannel">

<Membership className="org.apache.catalina.tribes.membership.McastService"

address="228.0.0.4"

port="45564"

frequency="500"

dropTime="3000"/>

<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"

address="auto"

port="14000"

selectorTimeout="5000"

maxThreads="6"/>

<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">

<Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>

</Sender>

<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>

<Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>

</Channel>

<Valve className="org.apache.catalina.ha.tcp.ReplicationValve"

filter=""/>

<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>

<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>

</Cluster>

第一个tomcat配置完毕

修改第二个tomcat/conf/server.xml

将

<Server port="8005" shutdown

改为

<Server port="28005"

将

<Connector port="8080" protocol="HTTP/1.1"

改为

<Connector port="28080"

将

<Connector port="8009" protocol="AJP/1.3"

改为

<Connector port="28009"

将

<Engine name="Catalina" defaultHost="localhost"

增加jvmRoute

<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2"

在<Engine name="Catalina"这个标签的下面添加

<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"

channelSendOptions="8">

<Manager className="org.apache.catalina.ha.session.DeltaManager"

expireSessionsOnShutdown="false"

notifyListenersOnReplication="true"/>

<Channel className="org.apache.catalina.tribes.group.GroupChannel">

<Membership className="org.apache.catalina.tribes.membership.McastService"

address="228.0.0.4"

port="45564"

frequency="500"

dropTime="3000"/>

<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"

address="auto"

port="24000"

selectorTimeout="5000"

maxThreads="6"/>

<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">

<Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>

</Sender>

<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>

<Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>

</Channel>

<Valve className="org.apache.catalina.ha.tcp.ReplicationValve"

filter=""/>

<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>

<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>

</Cluster>

第二个tomcat配置完毕

在项目的web.xml的最下方，添加支持session复制的语句

<distributable />

</web-app>

集群和session复制配置完毕，将war包分别部署到两个tomcat的webapps目录就可以实现项目的负载均衡和session复制。

一个很重要的问题，要实现session复制，必须序列化所有要存到session中的东西才行，例如

SessionInfo sessionInfo = new SessionInfo();

session.setAttribute("sessionInfo",sessionInfo);

这个sessionInfo必须 implements java.io.Serializable 才可以进行session复制，否则报错。