Apache2.2+Tomcat6配置集群、负载均衡、session
终于搞定的；
详细的配置过程，我把配置过程中几个不同和关键的地方重点提出来。
软件版本有所不同，罗列如下：
Apache:apache_2.2.4-win32-x86-no_ssl.msi1个
Tomcat:apache-tomcat-6.0.29-windows-x86.zip2个
mod_jk:mod_jk-1.2.26-httpd-2.2.4.so1个
我在一台机器（xp）上进行测试。
把apache和tomcat安装好以后，配置过程中有如下一些地方改动或者改进。在mod_jk-1.2.26-httpd-2.2.4.so复制到Module目录下
在D:\Apache2.2\conf\httpd.conf增加
# JK module settings Include conf/mod_jk.conf
在conf目录新增mod_jk.conf ,内容如下
# Load JK Module LoadModule jk_module modules/mod_jk-1.2.26-httpd-2.2.4.so # Configure mod_jk JkWorkersFile conf/workers.properties JkMountFile conf/uriworkermap.properties JkShmFile logs/mod_jk.shm JkLogFile logs/mod_jk.log JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories JkLogLevel warn JkLogStampFormat "[%a %b %d %H:%M:%S %Y]" HostnameLookups Off <Location /jkmanager/> JkMount jkstatus Order deny,allow Deny from all Allow from 127.0.0.1 </Location>
分别在Module目录下:workers.properties文件
# environment slash for Windows ps=\ worker.retries=2 worker.list=loadbalancer,jkstatus worker.s1.type=ajp13 worker.s1.host=localhost worker.s1.port=11009 worker.s1.lbfactor=1 worker.s1.connection_pool_timeout=600 worker.s1.socket_keepalive=true worker.s1.socket_timeout=60 worker.s2.type=ajp13 worker.s2.host=localhost worker.s2.port=12009 worker.s2.lbfactor=1 worker.s2.connection_pool_timeout=600 worker.s2.socket_keepalive=true worker.s2.socket_timeout=60 worker.jkstatus.type=status worker.loadbalancer.type=lb worker.loadbalancer.balance_workers=s1,s2 worker.loadbalancer.sticky_session=true
uriworkermap.properties文件
/*.jsp=loadbalancer /*.action=loadbalancer /jkmanager/*=jkstatus !*.gif=loadbalancer !*.jpg=loadbalancer !*.png=loadbalancer !*.bmp=loadbalancer !*.css=loadbalancer !*.js=loadbalancer !*.htm=loadbalancer !*.html=loadbalancer !*.swf=loadbalancer
然后配置tomcat6.0修改server.xml
<Server port="12005" shutdown="SHUTDOWN">
<!--APR library loader. Documentation at /docs/apr.html -->
<Listenerclassname="org.apache.catalina.core.AprLifecycleListener"SSLEngine="on"/>
<!--InitializeJasperpriortowebappsareloaded.Documentationat/docs/jasper-howto.html-->
<Listenerclassname="org.apache.catalina.core.JasperListener"/>
<!--Preventmemoryleaksduetouseofparticularjava/javaxAPIs-->
<Listenerclassname="org.apache.catalina.core.JreMemoryLeakPreventionListener"/>
<!--JMXSupportfortheTomcatserver.Documentationat/docs/non-existent.html-->
<Listenerclassname="org.apache.catalina.mbeans.ServerLifecycleListener"/>
<Listener classname="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /><!-- Global JNDI resources
Documentationat/docs/jndi-resources-howto.html
-->
<GlobalNamingResources>
<!--Editableuserdatabasethatcanalsobeusedby
UserDatabaseRealmtoauthenticateusers
-->
<Resourcename="UserDatabase"auth="Container"
type="org.apache.catalina.UserDatabase"
description="Userdatabasethatcanbeupdatedandsaved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml"/>
</GlobalNamingResources><!-- A "Service" is a collection of one or more "Connectors" that share
asingle"Container"Note:A"Service"isnotitselfa"Container",
soyoumaynotdefinesubcomponentssuchas"Valves"atthislevel.
Documentationat/docs/config/service.html
-->
<Servicename="Catalina">
<!--Theconnectorscanuseasharedexecutor,youcandefineoneormorenamedthreadpools-->
<!--
<Executorname="tomcatThreadPool"namePrefix="catalina-exec-"
maxThreads="150"minSpareThreads="4"/>
-->
<!--A"Connector"representsanendpointbywhichrequestsarereceived
andresponsesarereturned.Documentationat:
JavaHTTPConnector:/docs/config/http.html(blocking&non-blocking)
JavaAJPConnector:/docs/config/ajp.html
APR(HTTP/AJP)Connector:/docs/apr.html
Defineanon-SSLHTTP/1.1Connectoronport8080
-->
<Connectorport="12080"protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443"/>
<!--A"Connector"usingthesharedthreadpool-->
<!--
<Connectorexecutor="tomcatThreadPool"
port="8080"protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443"/>
-->
<!--DefineaSSLHTTP/1.1Connectoronport8443
ThisconnectorusestheJSSEconfiguration,whenusingAPR,the
connectorshouldbeusingtheOpenSSLstyleconfiguration
describedintheAPRdocumentation-->
<!--
<Connectorport="8443"protocol="HTTP/1.1"SSLEnabled="true"
maxThreads="150"scheme="https"secure="true"
clientAuth="false"sslProtocol="TLS"/>
--><!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="12009" enableLookups="false" protocol="AJP/1.3" redirectPort="8443" />
<!--AnEnginerepresentstheentrypoint(withinCatalina)thatprocesses
everyrequest.TheEngineimplementationforTomcatstandalone
analyzestheHTTPheadersincludedwiththerequest,andpassesthem
ontotheappropriateHost(virtualhost).
Documentation at /docs/config/engine.html --><!-- You should set jvmRoute to support load-balancing via AJP ie :
<Enginename="Catalina"defaultHost="localhost"jvmRoute="jvm1">
-->
<Engine name="Catalina" defaultHost="localhost" jvmRoute="s2" ><!--For clustering, please take a look at documentation at:
/docs/cluster-howto.html(simplehowto)
/docs/config/cluster.html(referencedocumentation)-->
<Clusterclassname="org.apache.catalina.ha.tcp.SimpleTcpCluster"
channelSendOptions="6"><Manager classname="org.apache.catalina.ha.session.BackupManager"
expireSessionsOnShutdown="false"
notifyListenersOnReplication="true"
mapSendOptions="6"/>
<!--
<Managerclassname="org.apache.catalina.ha.session.DeltaManager"
expireSessionsOnShutdown="false"
notifyListenersOnReplication="true"/>
-->
<Channelclassname="org.apache.catalina.tribes.group.GroupChannel">
<Membershipclassname="org.apache.catalina.tribes.membership.McastService"
bind="127.0.0.1"
address="228.0.0.4"
port="45564"
frequency="500"
dropTime="3000"/>
<Receiverclassname="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="127.0.0.1"
port="4001"
selectorTimeout="100"
maxThreads="6"/><Sender classname="org.apache.catalina.tribes.transport.ReplicationTransmitter">
<Transportclassname="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
</Sender>
<Interceptorclassname="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
<Interceptorclassname="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
<Interceptorclassname="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</Channel><Valve classname="org.apache.catalina.ha.tcp.ReplicationValve" filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
<ClusterListener classname="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster>
那红色部分的端口，两个tomcat必须不一样，前三个端口只要不冲突就可以了，而Receiver port="4001" 必须设置在4000-4010之间..网上别人说的，具体我也没做测试;因在前面workers.properties文件定义s1,s2,所以两个server.xml分别定义为jvmRoute="s2",jvmRoute="s1" ，端口等;
然后在tomcat6.0目录下context.xml文件 修改19行为<Context distributable="true">
配置OK之后，而我测试时用的test2.jsp就直接放到jp工程下test目录下 <%@ page contentType="text/html; charset=GBK" %> <%@ page import="java.util.*" %> <html><head><title>Cluster App Test</title></head> <body> Server Info: <% out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%> <% out.println("<br> ID " + session.getId()+"<br>"); // 如果有新的 Session 属性设置 String dataName = request.getParameter("dataName"); if (dataName != null && dataName.length() > 0) { String dataValue = request.getParameter("dataValue"); session.setAttribute(dataName, dataValue); } out.println("<b>Session 列表</b><br>"); System.out.println("============================"); Enumeration e = session.getAttributeNames(); while (e.hasMoreElements()) { String name = (String)e.nextElement(); String value = session.getAttribute(name).toString(); out.println( name + " = " + value+"<br>"); System.out.println( name + " = " + value); } %> <form action="test2.jsp" method="POST"> 名称:<input type=text size=20 name="dataName"> <br> 值:<input type=text size=20 name="dataValue"> <br> <input type=submit> </form> </body> </html>
然后分别启动apache,tomcat1,tomcat2；在http://localhost/jp/test/test2.jsp设值为222,v222；
然后在加上tomcat的端口去访问,所得值一样的.
后在加上tomcat的端口去访问,所得值一样的.
从上面测试可以看到session复制是正确的..