Tomcat+Apache 负载均衡

在apache的conf下建立文件workers.properties

workers.properties 指定tomcat服务器

 

worker.list=fuzaij,tomcat1,tomcat2  

 

worker.tomcat1.port=8019
worker.tomcat1.host=localhost
worker.tomcat1.type=ajp13
worker.tomcat1.lbfactor=1

 

worker.tomcat2.port=8029
worker.tomcat2.host=localhost
worker.tomcat2.type=ajp13
worker.tomcat2.lbfactor=1

 

worker.fuzaij.type=lb  
worker.fuzaij.balance_workers=tomcat1,tomcat2
worker.fuzaij.sticky_session=1

 

apache配置

<IfModule mpm_prefork_module>
    ServerLimit       3000
    StartServers      750
    MinSpareServers   5
    MaxSpareServers   100
    MaxClients        3000
    MaxRequestsPerChild   10000
</IfModule>

 

LoadModule jk_module modules/mod_jk-1.2.30-httpd-2.0.53.so(要下载至modules目录下)
JkWorkersFile conf/workers.properties
JkLogFile "D:/server/tomcat620/tomcat9091/mod_jk2.log"
JkLogLevel debug

 

<VirtualHost *:8080>
    ServerAdmin localhost
    DocumentRoot E:/technique/zc/modeltwosimple/webroot/apache
    DirectoryIndex index.html index.html.var index.jsp
    ServerName localhost:8080/modeltwo
    ErrorLog logs/dummy-host.example.com-error_log
    CustomLog logs/dummy-host.example.com-access_log common      

   JkMount /*.jsp fuzaij
   JkMount /*.do fuzaij       
</VirtualHost>

 

tomcat配置

<Connector port="8029" protocol="AJP/1.3" redirectPort="8983" />

 

如果不想实现粘性session, jvmRoute可以不配置

<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2" >

 

 

如果不想实现session复制, Cluster元素可以不添加

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

 

 

 

 

 

 

 tomcat的session同步功能需要用到组播，windows默认情况下是开通组播服务的，但是linux默认情况下并没有开通，可以通过指令打开route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0，如果需要服务器启动时即开通组播需在/etc/sysconfig/static-routes文件内加入eht0 net 224.0.0.0 netmask 240.0.0.0。
 

 

 http://www.iteye.com/topic/566051