[置顶] Apache HttpServer与Tomcat7集群Linux版
Apache HttpServer与Tomcat的整合见上篇：
http://blog.csdn.net/supercrsky/article/details/8295023
一.配置Tomcat
这里用两个tomcat，直接在已安装目录再复制一个，命名为tomcat2。
#cp -r /opt/tomcat/ tomcat2
进入tomcat2目录，编辑 conf/server.xml，修改默认端口。
#vi conf/server.xml
1. 将
<Server port="8005" shutdown="SHUTDOWN">
改成
<Server port="9005" shutdown="SHUTDOWN">
2.将
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
修改成：
<Connector port="9090" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="9443" />
3. 找到：
<Engine name="Catalina" defaultHost="localhost">
改成
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">
同时把tomcat2中此处内容改成
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2">
4.找到
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
改成
<Connector port="9009" protocol="AJP/1.3" redirectPort="8443" />
5.找到
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" />
把注释取消掉。
二．配置HTTP Server
1.检查是否启动了https，确保下面这句已经被注释。
#Include conf/extra/httpd-ssl.conf
2.找到我们在最文件最下面添加的VirtualHost节点，将其更改为：
<VirtualHost *>
DocumentRoot /usr/local/www/
<Directory "/usr/local/www/composite">
AllowOverride None
Order allow,deny
Allow from all
</Directory>
<Directory "/usr/local/www/composite/WEB-INF">
Order deny,allow
Deny from all
</Directory>
ServerAdmin localhost
DocumentRoot /usr/local/www/
ServerName localhost
DirectoryIndex index.html index.htm index.jsp index.action
ErrorLog logs/shsc-error_log.txt
CustomLog logs/shsc-access_log.txt common
JkMount /*WEB-INF controller
JkMount /*j_spring_security_check controller
JkMount /*.action controller
JkMount /servlet/* controller
JkMount /*.jsp controller
JkMount /*.do controller
</VirtualHost>
4. 编辑conf/workers.properties将内容修改为：
worker.list = controller #tomcat1 worker.tomcat1.port=8009 worker.tomcat1.host=localhost worker.tomcat1.type=ajp13 worker.tomcat1.lbfactor=1 #tomcat2 worker.tomcat2.port=9009 worker.tomcat2.host=localhost worker.tomcat2.type=ajp13 worker.tomcat2.lbfactor=1 #========controller======== worker.controller.type=lb worker.controller.balance_workers=tomcat1,tomcat2 worker.controller.sticky_session=1 worker.controller.sticky_session_force=true worker.connection_pool_size=3000 worker.connection_pool_minsize=50 worker.connection_pool_timeout=20
这句非常重要worker.list = controller，如果不加httpd会无法启动，查看日志报错：
Could not find a worker for worker name=controller
如果是横向集群，将worker.tomcat1.host或worker.tomcat2.host更改为对应的机器IP即可。
这里的connection_pool_timeout=20 单位是秒，必须和Tomcat中的配置connectionTimeout="20000"(注意这里是毫秒)一致，否则会产生半开或者半闭连接, 导致jk连接异常。
三．部署并测试
确保项目里的WEB-INF/web.xml文件，在</web-app>之前加入了
<distributable/>
将工程分别部署到/usr/local/www，/opt/tomcat/webapps，/opt/tomcat2/webapps
分别启动tomcat1和tomcat2，顺序无所谓，最后启动HTTP Server
#/opt/tomcat/bin/startup.sh
#/opt/tomcat2/bin/startup.sh
#/usr/local/httpd2.2/bin/apachectl start
启两个Firefox，分别访问我们的工程，这里是:http://localhost/composite
观察/opt/tomcat/logs/与/opt/tomcat2/logs/下对应的日志，
我们发现tomcat1和tomcat2已经分别处理了一个客户端请求。