Apache+Tomcat的整合与负载均衡
参考文档：http://tomcat.apache.org/connectors-doc/webserver_howto/apache.html[*]环境：CentOS5.8 64bit
[*]安装Apache
这里我选择了yum 方式安装：yum install httpdhttpd-devel
[*]安装好之后，下载apache-tomcatconnector,去页面http://tomcat.apache.org/download-connectors.cgi查找一下linux下的源代码包，下载： wget http://labs.mop.com/apache-mirror//tomcat/tomcat-connectors/jk/tomcat-connectors-1.2.37-src.tar.gz
[*]解压并且进入代码目录： tar -xf tomcat-connectors-1.2.37-src.tar.gz && cd tomcat-connectors-1.2.37-src/native/
[*]编译mod_jk.so模块： ./configure --with-apxs=/usr/sbin/apxs (注意后面跟的参数是关键，如果你编译安装apxs可能在别的目录）
make
[*]拷贝模块文件到apache默认的模块目录： cp apache-2.0/mod_jk.so/etc/httpd/modules/
[*]在apache配置文件内引入该模块： vi /etc/httpd/conf/httpd.conf
插入LoadModule jk_module modules/mod_jk.so
在apache的 conf.d目录下，添加有关mod_Jk的配置： vi /etc/httpd/conf.d/mod_jk.conf
###### 指出mod_jk模块工作所需要的工作文件workers.properties的位置
JkWorkersFile /etc/httpd/conf/workers.properties
###### Where to put jk logs
JkLogFile /var/log/mod_jk.log
###### Set the jk log level
JkLogLevel info
###### Select the log format
JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
###### JkOptions indicate to send SSL KEY SIZE,
JkOptions+ForwardKeySize +ForwardURICompat -ForwardDirectories
###### JkRequestLogFormat set the request format
JkRequestLogFormat "%w %V %T
[*]添加workers.properties文件: vi /etc/httpd/conf/workers.properties
worker.list=worker1,worker2,worker3,worker4,worker5,loadbalance1,jkstatus
####### Set properties for worker1
worker.worker1.type=ajp13
worker.worker1.host=localhost
worker.worker1.port=8031
worker.worker1.lbfactor=50
worker.worker1.socket_keepalive=1
worker.worker1.socket_timeout=300
####### Set properties for worker2
worker.worker2.type=ajp13
worker.worker2.host=localhost
worker.worker2.port=8033
worker.worker2.lbfactor=50
worker.worker2.socket_keepalive=1
worker.worker2.socket_timeout=300
####### Set properties for worker3
worker.worker3.type=ajp13
worker.worker3.host=localhost
worker.worker3.port=8035
worker.worker3.lbfactor=50
worker.worker3.socket_keepalive=1
worker.worker3.socket_timeout=300
####### Set properties for worker4
worker.worker4.type=ajp13
worker.worker4.host=localhost
worker.worker4.port=8037
worker.worker4.lbfactor=50
worker.worker4.socket_keepalive=1
worker.worker4.socket_timeout=300
####### Set properties for worker5
worker.worker5.type=ajp13
worker.worker5.host=localhost
worker.worker5.port=8039
worker.worker5.lbfactor=50
worker.worker5.socket_keepalive=1
worker.worker5.socket_timeout=300
##set loadbalance 1 这里是负载均衡部分，使用了session sticky功能
worker.loadbalance1.type=lb
worker.loadbalance1.balance_workers=worker1,worker2,worker3,worker4,worker5
worker.loadbalance1.sticky_session=true
# Define a 'jkstatus' worker using status
worker.jkstatus.type=status
[*]在apache主配置文件内编辑virtualhost
ServerAdmin webmaster@testserver.com
DocumentRoot /www/docs/www.testserver.com
ServerName www.testserver.com
ErrorLog logs/www.testserver.com-error_log
CustomLog logs/www.testserver.com-access_log common
JkMount loadbalance1
JkMount jkstatus
Order deny,allow
Deny from all
Allow from 192.168.1.1
[*]重启apache: /etc/init.d/httpd restart
注：引用本文，请注明来自：http://www.iyunv.com/helloLinux/archive/2012/07/02/2573297.html
附录：Ubuntu12.04 环境下
安装apache： apt-get install apache2
安装devel包： apt-get install apache2-dev
apxs现在叫做 apxs2
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