apache+tomcat解决session项目问题负载。

参考网址：http://www.cnblogs.com/onlywujun/articles/2913949.html 

 

apache版本2.2 tomcat6

本文主要包括以下内容：

Ø  Apache的配置

Ø  Tomcat的配置

3详细描述

 

3.1 Apache的配置

首先在apache 的conf目录下找到httpd.conf(apache 的配置文件)文件

在该文件里找到

LoadModule proxy_module modules/mod_proxy.so

LoadModule proxy_ajp_module modules/mod_proxy_ajp.so

LoadModule proxy_balancer_module modules/mod_proxy_balancer.so

LoadModule proxy_connect_module modules/mod_proxy_connect.so

LoadModule proxy_ftp_module modules/mod_proxy_ftp.so

LoadModule proxy_http_module modules/mod_proxy_http.so

并且把上面的#号去掉。

然后找到

Include conf/extra/httpd-vhosts.conf

把上面的#号去掉。

配置session粘性只需要在httpd.conf里最后一段加上如下信息（ajp://127.0.0.1:8010的8010配置的是tomcat的ajp端口，route=tomcat3中的tomcat3是tomcat配置文件server.xml里的jvmRoute的值）：

ProxyRequests Off

ProxyPass / balancer://cluster/ lbmethod=byrequests stickysession=JSESSIONID nofailover=Off timeout=5 maxattempts=3 

ProxyPassReverse / balancer://cluster/ 

<proxy balancer://cluster>

 

BalancerMember ajp://127.0.0.1:8010 loadfactor=1 route=tomcat3

 

BalancerMember ajp://127.0.0.1:8020 loadfactor=1 route=tomcat2

 

</proxy>

 

 

第二步找到\conf\extra包下面的httpd-vhosts.conf

在下面加上

<VirtualHost *:80>

ServerAdmin [email protected]

ServerName localhost

ServerAlias   localhost

ProxyPass / balancer://cluster/ stickysession=jsessionid nofailover=On

ProxyPassReverse / balancer://cluster/

ErrorLog "logs/dummy-host2.163.com-error.log"

    CustomLog "logs/dummy-host2.163.com-access.log" common

</VirtualHost>

 

3.2 Tomcat的配置

第三步找到解压后的tomcat在不同的tomcat里修改server.xml里的端口参数使之不重复

（大家都知道就不详细说了）

这里改几个比较重要的参数

一个是<Engine name="Catalina" defaultHost="localhost">

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

另一个后面改成tomcat3

 

每个tomcat都加上：

<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"

                                                        mcastBindAddress="127.0.0.1"

                        address="228.0.0.4"

                        port="45564"

                        frequency="500"

                        dropTime="3000"/>

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

                                               tcpListenAddress="127.0.0.1"

                      address="auto"

                      port="4000"

                      autoBind="100"

                      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"/>

                  

          <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"

                    tempDir="/tmp/war-temp/"

                    deployDir="/tmp/war-deploy/"

                    watchDir="/tmp/war-listen/"

                    watchEnabled="false"/>

                           

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

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

        </Cluster>