Apache+Tomcat集群配置
准备环境下载
Apache HTTP Server http://labs.mop.com/apache-mirror/httpd/binaries/win32/ 下载httpd-2.2.22-win32-x86-no_ssl.msi
JK http://www.apache.org/dist/tomcat/tomcat-connectors/jk/binaries/windows/ 下载tomcat-connectors-1.2.37-windows-i386-httpd-2.2.x.zip
Tomcat http://tomcat.apache.org/download-70.cgi
安装
安装Apache HTTP Server，如果没有其他的http服务器(如iis)则应该可以成功安装，端口即为80，能够访问http://localhost/ 说明安装成功。
安装Tomcat7，下载tomcat7解压缩为4个tomcat文件，分别命名tomcat1、tomcat2、tomcat3、tomcat4.
tomcat6.X与tomcat7.X集群通用。
配置
Apache配置
1、修改httpd.conf
在Apache安装目录下找到conf目录下的httpd.conf，在文件的最后一行添加
include conf/mod_jk.conf
2、新建mod_jk.conf文件，内容如下：
LoadModule jk_module modules/mod_jk.so
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名
JkMount /* controller
3、将下载的JK插件解压拷贝mod_jk.so,复制到Apache安装目录的modules目录下。
4、在apache的安装目录conf下新建并编辑workers.properties文件，内容如下：
#server
worker.list = controller
#========tomcat1========
worker.tomcat1.port=8719
worker.tomcat1.host=localhost
worker.tomcat1.type=ajp13
worker.tomcat1.lbfactor = 1
worker.tomcat1.redirect=tomcat2
#========tomcat2========
worker.tomcat2.port=8729
worker.tomcat2.host=localhost
worker.tomcat2.type=ajp13
worker.tomcat2.lbfactor = 1
worker.tomcat2.redirect=tomcat1
#worker.tomcat2.activation=disabled
#========tomcat3========
worker.tomcat3.port=8739
worker.tomcat3.host=localhost
worker.tomcat3.type=ajp13
worker.tomcat3.lbfactor = 1
worker.tomcat3.redirect=tomcat4
#========tomcat4========
worker.tomcat4.port=8749
worker.tomcat4.host=localhost
worker.tomcat4.type=ajp13
worker.tomcat4.lbfactor = 1
worker.tomcat4.redirect=tomcat3
#worker.tomcat4.activation=disabled
#========controller,负载均衡控制器========
worker.controller.type=lb
worker.controller.balanced_workers=tomcat1,tomcat2,tomcat3,tomcat4
worker.controller.sticky_session=false
#worker.controller.sticky_session_force=1
#worker.controller.sticky_session=1
PS:#worker.tomcat4.activation=disabled 表示tomcat是否激活
tomcat配置
Tomcat1中server.xml配置：
<Connector port="8781" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />
<Connector port="8719" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">
<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="4001"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>
<!-- timeout="60000"-->
<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"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</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>
....
<Host name="localhost" appBase="C:\tomcat7-ex\webapps"
unpackWARs="true" autoDeploy="true">
Tomcat2中server.xml配置：
<Connector port="8782" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />
<Connector port="8729" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2">
<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="4001"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>
<!-- timeout="60000"-->
<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"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</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>
....
<Host name="localhost" appBase="C:\tomcat7-ex\webapps"
unpackWARs="true" autoDeploy="true">
Tomcat3中server.xml配置：
<Connector port="8783" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />
<Connector port="8739" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat3">
<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="228.0.0.5"
port="45564"
frequency="500"
dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="auto"
port="4001"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>
<!-- timeout="60000"-->
<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"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</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>
...
<Host name="localhost" appBase="C:\tomcat7-ex\webapps"
unpackWARs="true" autoDeploy="true">
Tomcat4中server.xml配置：
<Connector port="8784" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />
<Connector port="8749" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat4">
<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="228.0.0.5"
port="45564"
frequency="500"
dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="auto"
port="4001"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>
<!-- timeout="60000"-->
<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"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</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>
...
<Host name="localhost" appBase="C:\tomcat7-ex\webapps"
unpackWARs="true" autoDeploy="true">
注意AJP13的connector的poat和jvmRoute名称和workers.properties中配置对应。228.0.0.4和228.0.0.5表示tomcat的群组
基于windows环境搭建完毕，参考文档如下
1、Apache+Tomcat集群配置 http://charyle.iyunv.com/blog/1017961
2、对tomcat cluster集群配置中session复制用法的一个误解 http://618119.com/archives/2007/11/13/26.html
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