tomcat负载均衡配置：集群和应用部分的代码

前文，我们介绍了tomcat负载均衡安装和配置的内容，前面主要针对的是负载均衡的配置代码介绍。那么接下来，就是针对于tomcat集群配置的代码内容，之后的应用配置也做了简要的叙述。

◆tomcat集群配置

(1)负载均衡配置的条件下配置tomcat集群

(2)分别修改三个tomcat的配置文件conf/server.xml,修改内容如下

修改前

<!-- 
<ClusterclassName="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
managerClassName="org.apache.catalina.cluster.session.DeltaManager"
expireSessionsOnShutdown="false"
useDirtyFlag="true"
notifyListenersOnReplication="true"> 

<Membership 
className="org.apache.catalina.cluster.mcast.McastService"
mcastAddr="228.0.0.4"
mcastPort="45564"
mcastFrequency="500"
mcastDropTime="3000"/> 

<Receiver 
className="org.apache.catalina.cluster.tcp.ReplicationListener"
tcpListenAddress="auto"
tcpListenPort="4001"
tcpSelectorTimeout="100"
tcpThreadCount="6"/> 

<Sender 
className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
replicationMode="pooled"
ackTimeout="5000"/> 

<ValveclassName="org.apache.catalina.cluster.tcp.ReplicationValve"
filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/> 
 
<DeployerclassName="org.apache.catalina.cluster.deploy.FarmWarDeployer"
tempDir="/tmp/war-temp/"
deployDir="/tmp/war-deploy/"
watchDir="/tmp/war-listen/"
watchEnabled="false"/> 
 
<ClusterListenerclassName="org.apache.catalina.cluster.session.ClusterSessionListener"/> 
</Cluster> 
-->

#p#修改后

<!--modifybywhh--> 
<ClusterclassName="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
managerClassName="org.apache.catalina.cluster.session.DeltaManager"
expireSessionsOnShutdown="false"
useDirtyFlag="true"
notifyListenersOnReplication="true"> 

<Membership 
className="org.apache.catalina.cluster.mcast.McastService"
mcastAddr="228.0.0.4"
mcastPort="45564"
mcastFrequency="500"
mcastDropTime="3000"/> 

<Receiver 
className="org.apache.catalina.cluster.tcp.ReplicationListener"
tcpListenAddress="auto"
tcpListenPort="4001"
tcpSelectorTimeout="100"
tcpThreadCount="6"/> 

<Sender 
className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
replicationMode="pooled"
ackTimeout="5000"/> 

<ValveclassName="org.apache.catalina.cluster.tcp.ReplicationValve"
filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/> 
 
<DeployerclassName="org.apache.catalina.cluster.deploy.FarmWarDeployer"
tempDir="/tmp/war-temp/"
deployDir="/tmp/war-deploy/"
watchDir="/tmp/war-listen/"
watchEnabled="false"/> 
 
<ClusterListenerclassName="org.apache.catalina.cluster.session.ClusterSessionListener"/> 
</Cluster> 
!--modifybywhh-->

将集群配置选项的注释放开即可,如上｡

(3)重启三个tomcat｡到此负载均衡配置下tomcat的集群已配置完成｡#p#

◆应用配置

对于要进行负载和集群的的tomcat目录下的webapps中的应用中的WEB-INF中的web.xml文件要添加如下一句负载均衡配置

<distributable/>

配置前

<?xmlversion="1.0"encoding="UTF-8"?> 
<web-appxmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2eehttp://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"version="2.4"> 
<display-name>TomcatDemo</display-name> 
</web-app>

配置后

<?xmlversion="1.0"encoding="UTF-8"?> 
<web-appxmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2eehttp://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"version="2.4"> 
<display-name>TomcatDemo</display-name> 
<distributable/> 
</web-app>