Apache/Tomcat 设置:
Apache
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/ \
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C1 C2 Clusters
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/ \ / \
/ \ / \
T1 T2 T3 T4 Tomcats
- 视窗服务器 2012
- 阿帕奇 2.2.25
- mod_jk 1.2.20
- 雄猫 7.0.42
我在 C1 和 C2 上有负载平衡。T1 和 T2 是一组,T3 和 T4 是另一组。C1 和 C2 是独立的。
worker.properties:
worker.list=jkstatus,Cluster1,Cluster2,C1T1,C1T2,C2T1,C2T2
worker.jkstatus.type=status
# Configuration Cluster 1
worker.Cluster1.type=lb
worker.Cluster1.balance_workers=C1T1,C1T2
worker.C1T1.port=8119
worker.C1T1.host=localhost
worker.C1T1.type=ajp13
worker.C1T1.lbfactor=1
worker.C1T1.redirect=C1T2
worker.C1T2.port=8129
worker.C1T2.host=localhost
worker.C1T2.type=ajp13
worker.C1T2.lbfactor=1
worker.C1T2.redirect=C1T1
# Configuration Cluster 2
worker.Cluster2.type=lb
worker.Cluster2.balance_workers=C2T1,C2T2
worker.C2T1.port=8219
worker.C2T1.host=localhost
worker.C2T1.type=ajp13
worker.C2T1.lbfactor=1
worker.C2T1.redirect=C2T2
worker.C2T2.port=8229
worker.C2T2.host=localhost
worker.C2T2.type=ajp13
worker.C2T2.lbfactor=1
worker.C2T2.redirect=C2T1
Apache 以这种方式将每个请求重定向到Cluster1或Cluster2:
JkMount /MyApp/* Cluster1
服务器.xml:
<Engine name="Catalina" defaultHost="localhost" jvmRoute="C1T1">
<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="45562" frequency="500" dropTime="3000"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
<Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
</Sender>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="auto" port="4001" autoBind="100" selectorTimeout="5000" maxThreads="6"/>
<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>
<Realm className="org.apache.catalina.realm.LockOutRealm">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true">
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log." suffix=".txt" pattern="%h %l %u %t "%r" %s %b" />
</Host>
</Engine>
T1/T2 具有相同的地址/端口,T3/T4 具有相同的地址/端口(不同于 T1/T2)。
我跟着这个: http: //tomcat.apache.org/tomcat-7.0-doc/cluster-howto.html和这个:http: //tomcat.apache.org/connectors-doc/reference/workers.html
负载平衡工作正常。如果我关闭集群上的一个 Tomcat,Apache 会将所有请求重定向到另一个 Tomcat。会话也被复制(我使用 JConsole 来跟踪两个 Tomcat 上的活动会话数)。
现在,这是我的问题:
每次我按 F5 时都会创建一个新会话(我@SessionBean
在 Tomcat 上使用)。如果我通过使用其 HTTP 端口直接访问 Tomcat 来绕过集群,则会创建一个新会话,但当我按下 F5 时不会创建新会话。
我想知道为什么当使用 Apache 访问时,每个请求都会创建一个新会话(以及如何修复它!)。