apache+tomcat 세션 클러스터링

먼저 로드밸런싱 을 해준다

그담

1. Clustering에 참여하는 각각의 tomcat 서버의 server.xml 에

<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> 부분 주석처리 해제

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[root@tpwas conf]# pwd /svc/spi/was/tomcat/spiWas2/conf [root@tpwas conf]# vi server.xml ===================================================================================== <!--       <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> --> =====================================================================================

1.1 보다 상세한 설정 및 물리 장비가다 다를 경우 다음을 각 server.xml에 추가
그리고 Receiver의 아이피와 포트를 수정

<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="228.0.0.105" port="45564" frequency="500" dropTime="3000"/>
          <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="현재 서버아이피" port="4001 서버마다틀리게" 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>

2. WEB-INF/web.xml에 <distirbutable/>추가

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[root@tpwas WEB-INF]# pwd /home/spiwas/dist/WebContent/WEB-INF [root@tpwas WEB-INF]# vi web.xml ================================================================================================== <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/j2ee"          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"          version="2.4">     <display-name>Clustering Test</display-name>     <distributable/> </web-app> ==================================================================================================

3. 구동 확인

start시 catalina.out.out에 다음과 같은 로그가 나오면 됨

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정보: Replication member added:org.apache.catalina.tribes.membership.MemberImpl[tcp://{127, 0, 0, 1}:4000,{127, 0, 0, 1},4000, alive =5012, securePort=-1, UDP Port=-1, id={31 -5 48 -9 -27 64 79 67 -81 49 -44 96 -87 -84 -115 -121 }, payload={}, command={}, domain={} , ]

3.1 구동시 에러메세지
 구동시 다음과 같은 에러 메세지가 나올 수 있다
이럴땐 /etc/hosts파일을 수정해 준다

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½É°¢: Failed bind replication listener on address:auto java.net.UnknownHostException: tpwas: tpwas         at java.net.InetAddress.getLocalHost(InetAddress.java:1402)         at org.apache.catalina.tribes.transport.ReceiverBase.getBind(ReceiverBase.java:201)         at org.apache.catalina.tribes.transport.nio.NioReceiver.start(NioReceiver.java:110)         at org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:145)         at org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordinator.java:99)         at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:162)         at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:162)         at org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.start(MessageDispatchInterceptor.java:157)         at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:162)         at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:419)         at org.apache.catalina.ha.tcp.SimpleTcpCluster.startInternal(SimpleTcpCluster.java:685)         at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)         at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1106)         at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302)         at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)         at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)         at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)         at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732)         at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)         at org.apache.catalina.startup.Catalina.start(Catalina.java:691)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)         at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456) 2014. 2. 26 ¿ÀÀü 10:59:27 org.apache.catalina.tribes.transport.ReceiverBase getBind

다음을 제일 밑에 추가

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[root@tpwas logs]# vi /etc/hosts 127.0.0.1   localhost 시스템 이름 localhost

4. 테스트 - webcontent폴더에 index.jsp를 다음과 같이 만든다

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[root@tpwas WebContent]# pwd /home/spiwas/dist/WebContent [root@tpwas WebContent]# vi index.jsp  ===================================================================================== <%   session.setAttribute("a","a"); %> <html> <head> <title>Test JSP</title> </head> <body> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr bgcolor="#CCCCCC">     <td width="13%">Tomcat1 Machine</td>     <td width="87%">&nbsp;</td>   </tr>   <tr>     <td>Session ID :</td>     <td><%=session.getId()%></td>   </tr> </table>     <div>Im WAS server hello snowman</div> </body> </html> =====================================================================================

4.1 인스턴스를 2개 뛰우고 하나씩 죽여가면서 다음 화면과 같이 sessionId는 같고 worker가 달라지는 것을 확인하면 완료된 것이다
(크롬에서이나 익스플로러에서 확인해볼 것)

1번 인스턴스만 살아 있을때 또는 동시에 2개 다 살아있을때

2번 인스턴스만 살아있을때