Apache2下负载均衡tomcat

##Apache2下负载均衡tomcat##

#修改apache httpd.conf 去掉注释#

LoadModule proxy_module modules/mod_proxy.so 

LoadModule proxy_connect_module modules/mod_proxy_connect.so 

LoadModule proxy_ftp_module modules/mod_proxy_ftp.so 

LoadModule proxy_http_module modules/mod_proxy_http.so 

LoadModule proxy_ajp_module modules/mod_proxy_ajp.so 

LoadModule proxy_balancer_module modules/mod_proxy_balancer.so 

#添加 DirectoryIndex #

DirectoryIndex index.jsp

#BalancerMember成员是我们配置的tomcat集群#

ProxyRequests Off 

<proxy balancer://cluster> 

①BalancerMember ajp://127.0.0.1:9001 loadfactor=1 route=jvm1

</proxy> 

#添加Virtual hosts #

检查 -- 去掉注释

# Virtual hosts 

Include conf/extra/httpd-vhosts.conf 

#在文件（extra/httpd-vhosts.conf）最下面加入#

<VirtualHost *:80> 

ServerAdmin [email protected] 

ServerName localhost 

ServerAlias localhost 

#下面两个配置对应httpd.conf中的<proxy balancer://cluster> 配置

ProxyPass / balancer://cluster/ stickysession=jsessionid nofailover=On 

ProxyPassReverse / balancer://cluster/ 

</VirtualHost> 

##tomcat \conf下的 server.xml ## 

#<Engine#

①<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> 

#<Cluster#

<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"  channelSendOptions="6">

<Manager className="org.apache.catalina.ha.session.BackupManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true" mapSendOptions="6"/>

<!--

<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="5001"

selectorTimeout="100"

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"/>

<Interceptor className="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;"/>

<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.ClusterSessionListener"/>

</Cluster>

#<Connector#

①<Connector port="9001" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />